{"id":14274,"date":"2024-03-23T16:24:08","date_gmt":"2024-03-23T10:54:08","guid":{"rendered":"https:\/\/tsboardsolutions.in\/?p=14274"},"modified":"2024-03-25T17:15:14","modified_gmt":"2024-03-25T11:45:14","slug":"ts-10th-class-physical-science-bits-chapter-1","status":"publish","type":"post","link":"https:\/\/tsboardsolutions.in\/ts-10th-class-physical-science-bits-chapter-1\/","title":{"rendered":"TS 10th Class Physical Science Bits Chapter 1 Reflection of Light at Curved Surfaces"},"content":{"rendered":"

These\u00a0TS 10th Class Physical Science Bits with Answers<\/a> Chapter 1 Reflection of Light at Curved Surfaces will help students to enhance their time management skills.<\/p>\n

TS 10th Class Physical Science Bits Chapter 1 Reflection of Light at Curved Surfaces<\/h2>\n

Question 1.
\nThe surface of a polished metal spoon bulged outwards can be approximated to a ………………….. mirror. ( )
\n(A) convex
\n(B) plane
\n(C) concave
\n(D) cubical
\nAnswer:
\n(A) convex<\/p>\n

Question 2.
\nIf the object Is at Infinity from a concave mirror the size of the image formed is ……………. . ( )
\n(A) highly enlarged
\n(B) point sized
\n(C) same size as object
\n(D) none of these
\nAnswer:
\n(B) point sized<\/p>\n

Question 3.
\nThe image which cannot be caught on a screen Is called ( )
\n(A) enlarged image
\n(B) real image
\n(C) diminished image
\n(D) virtual Image
\nAnswer:
\n(D) virtual Image<\/p>\n

\"TS<\/p>\n

Question 4.
\nThe mirror that can be used conveniently as shaving mirror. ( )
\n(A) plane mirror
\n(B) convex mirror
\n(C) concave mirror
\n(D) parabolic mirror
\nAnswer:
\n(C) concave mirror<\/p>\n

Question 5.
\nThe Image formed by a plane mirror is ( )
\n(A) real
\n(B) virtual
\n(C) enlarged
\n(D) diminished
\nAnswer:
\n(B) virtual<\/p>\n

Question 6.
\nThe principal focus of a spherical mirror is denoted by the letter. ( )
\n(A) F
\n(B) R
\n(C) C
\n(D) P
\nAnswer:
\n(A) F<\/p>\n

Question 7.
\nThe centre of the reflecting surface of a spherical mirror Is called ( )
\n(A) pole
\n(B) focus
\n(C) centre of curvature
\n(D) null point
\nAnswer:
\n(A) pole<\/p>\n

Question 8.
\nIn case of a concave mirror a ray parallel to the principal axis after reflection passes through. ( )
\n(A) centre of curvature
\n(B) pole
\n(C) focus
\n(D) centre of gravity
\nAnswer:
\n(C) focus<\/p>\n

Question 9.
\nA highly polished surface Is called ( )
\n(A) lens
\n(B) mirror
\n(C) prism
\n(D) glass slab
\nAnswer:
\n(B) mirror<\/p>\n

Question 10.
\nIf u=25 cm, and v=37.5 cm, the focal length of the concave mirror is (observe the sign convention) ( )
\n(A) 31.25 cm
\n(B) 15 cm
\n(C) -15 cm
\n(D) -12.5 cm
\nAnswer:
\n(C) -15 cm<\/p>\n

Question 11.
\nThe distances measured In the direction of incident light are taken ……………. in case of a spherical mirror: ( )
\n(A) +ve
\n(B) -ve
\n(C) either +ve or -ve
\n(D) none of these
\nAnswer:
\n(A) +ve<\/p>\n

Question 12.
\nHeight of object or height of image is considered as …………. If measured downwards from principal axis : ( )
\n(A) +ve
\n(B) -ve
\n(C) either +ve or -ve
\n(D) none of these
\nAnswer:
\n(B) -ve<\/p>\n

Question 13.
\nIf u\u2019 is the object distance and \u2018v\u2019 is the image distance, the magnification, m = ()
\n(A) -v\/u
\n(B) -u\/v
\n(C) v\/u
\n(D) v+u\/u
\nAnswer:
\n(A) -v\/u<\/p>\n

\"TS<\/p>\n

Question 14.
\nThe distance between the principal focus and the pole of a curved mirror is called : ( )
\n(A) radius of curvature
\n(B) object distance
\n(C) image distance
\n(D) focal length
\nAnswer:
\n(D) focal length<\/p>\n

Question 15.
\nThe centre of the sphere to which the concave mirror is a part is known as ()
\n(A) centre of curvature
\n(B) focus
\n(C) pole of mirror
\n(D) centre of gravity
\nAnswer:
\n(A) centre of curvature<\/p>\n

Question 16.
\nIf the focal length of a concave mirror \u00ec 50 cm, its radius of curvature is ( )
\n(A) 100 cm
\n(B) 25 cm
\n(C) 50 cm
\n(D) 75 cm
\nAnswer:
\n(A) 100 cm<\/p>\n

Question 17.
\nThe surface of the head light of a motor vehicle is of ………………………. shape. ( )
\n(A) concave
\n(B) plane
\n(C) convex
\n(D) helix
\nAnswer:
\n(C) convex<\/p>\n

Question 18.
\nIf the object is beyond \u2018c\u2019 of a concave mirror the nature of image is ( )
\n(A) real
\n(B) inverted
\n(C) diminished
\n(D) all of A,B & C
\nAnswer:
\n(D) all of A,B & C<\/p>\n

Question 19.
\nThe ray which is emergent from the object and reaches the pole of the mirror is
\n……………………… to the principal axis ( )
\n(A) parallel
\n(B) normal
\n(C) inclined at 60\u00b0
\n(D) coincident
\nAnswer:
\n(B) normal<\/p>\n

Question 20.
\nTo form a shadow the following are needed ( )
\n(A) source of light
\n(B) opaque object
\n(C) screen
\n(D) All of A, B & C
\nAnswer:
\n(D) All of A, B & C<\/p>\n

Question 21.
\nThe line joining the pole of a curved mirror to its centre of curvature is called ( )
\n(A) coordinate axis
\n(B) princpal axis
\n(C) central axis
\n(D) none of these
\nAnswer:
\n(B) princpal axis<\/p>\n

Question 22.
\nWhen parallel rays are Incident on a concave mirror, on reflection they meet at the
\n(A) pole
\n(B) centre of curvature
\n(C) centre of mass
\n(D) focus
\nAnswer:
\n(D) focus<\/p>\n

Question 23.
\nThe nature of Image formed when the object is placed between concave mirror and F is ( )
\n(A) real
\n(B) virtual
\n(C) diminished
\n(D) none of the above
\nAnswer:
\n(B) virtual<\/p>\n

\"TS<\/p>\n

Question 24.
\nThe mirrors used by dentists to examine the teeth of a patient are ( )
\n(A) concave
\n(B) convex
\n(C) plane
\n(D) cylindrical
\nAnswer:
\n(A) concave<\/p>\n

Question 25.
\nThe light ray emerging from the tip of object and passing through centre of curvature gets reflected ( )
\n(A) perpendicular to incident ray
\n(B) at an inclination of 60\u00b0 to Incident ray
\n(C) along the same line
\n(D) along a line parallel to incident ray
\nAnswer:
\n(C) along the same line<\/p>\n

Question 26.
\nIf the object is kept between F and C of a concave mirror the image Is formed
\n(A) at C
\n(B) between P and F
\n(C) at F
\n(D) beyond C
\nAnswer:
\n(D) beyond C<\/p>\n

Question 27.
\nA virtual enlarged image \u00a1s formed by a concave mirror when the object is kept ( )
\n(A) beyond C
\n(B) between Fand C
\n(C) between P and F
\n(D) at C
\nAnswer:
\n(C) between P and F<\/p>\n

Question 28.
\nConvention for the parameters connected to mirror equation is: All the distances should be measured from :
\n(A) centre of curvature
\n(B) foucs
\n(C) pole of mirror
\n(D) none of these
\nAnswer:
\n(C) pole of mirror<\/p>\n

Question 29.
\nThe rearview mirror of a motor car is a ………………………. mirror ()
\n(A) convex
\n(B) concave
\n(C) hyperbolic
\n(D) cylindrical
\nAnswer:
\n(A) convex<\/p>\n

Question 30.
\nWhen torch light is focussed on a wall the beam observed is ()
\n(A) parallel
\n(B) focussed at a point
\n(C) convergent
\n(D) divergent
\nAnswer:
\n(D) divergent<\/p>\n

Question 31.
\nReshma focussed a light ray onto the mirror and the light ray comes back in ( )
\n(A) broken line
\n(B) straight line
\n(C) curved line
\n(D) circle
\nAnswer:
\n(B) straight line<\/p>\n

\"TS<\/p>\n

Question 32.
\nLight ( )
\n(i) requires medium to propagate.
\n(ii) travels at a velocity of 3x 108<\/sup>m\/s in air or vaccum.
\n(iii) travels in straight lines
\nNow which of the following statements are correct
\n(A) i & ii
\n(B) i, ii, & iii
\n(C) i only
\n(D) ii & iii only
\nAnswer:
\n(D) ii & iii only<\/p>\n

Question 33.
\nOut of the following identify the transparent medium ()
\n(i) cardboard
\n(ii) water
\n(iii) plywood sheet
\n(iv) air
\n(A) i & ii
\n(B) i & iii
\n(C) ii & iv
\n(D) i, ii & iii
\nAnswer:
\n(C) ii & iv<\/p>\n

Question 34.
\nOut of the following which is translucent medium? ()
\n(i) glass
\n(ii) stone
\n(iii) oil paper
\n(iv) ground glass
\n(A) iii & iv
\n(B) i & iii
\n(C) ii & iii
\n(D) i & iii
\nAnswer:
\n(A) iii & iv<\/p>\n

Question 35.
\nIf heIght of image is hi<\/sub> and height of object is h0<\/sub>, then magnification, m is ()
\n(A) h0<\/sub>\/hi<\/sub>
\n(B) hi<\/sub>\/h0<\/sub>
\n(C) \\(\\frac{\\mathrm{h}_{\\mathrm{i}}-\\mathrm{h}_{\\mathrm{o}}}{\\mathrm{h}_{\\mathrm{o}}}\\)
\n(D) \\(\\frac{\\mathrm{h}_{\\mathrm{i}}+\\mathrm{h}_{\\mathrm{o}}}{\\mathrm{h}_{\\mathrm{o}}} \\)
\nAnswer:
\n(B) hi<\/sub>\/h0<\/sub><\/p>\n

Question 36.
\nImage distance is (-37.5 cm) and object distance is (-25.0 cm), magnification, m =
\n(A) -1.5
\n(B) 10\/15
\n(C) 1.5
\n(D) 3
\nAnswer:
\n(C) 1.5<\/p>\n

Question 37.
\nThe TV dish antenna resembles the shape of ( )
\n(A) convex mirror
\n(B) cylindrical mirror
\n(C) plane mirror
\n(D) concave mirror
\nAnswer:
\n(D) concave mirror<\/p>\n

Question 38.
\n\u201cLight chooses the path which takes the least time to travel\u201d This is known as ( )
\n(A) Huygens\u2019 wave theory
\n(B) Newton\u2019s corpuscular theory
\n(C) Fermat\u2019s principle
\n(D) Snell\u2019s law
\nAnswer:
\n(C) Fermat\u2019s principle<\/p>\n

Question 39.
\nThe angle between the normal at point of incidence and the incident ray Is called the angle of ( )
\n(A) reflection
\n(B) incidence
\n(C) refraction
\n(D) minimum deviation
\nAnswer:
\n(B) incidence<\/p>\n

Question 40.
\nThe angle between the normal and reflected ray Is called ( )
\n(A) angle of incidence
\n(B) critical angle
\n(C) angle of deviation
\n(D) angle of reflection
\nAnswer:
\n(D) angle of reflection<\/p>\n

\"TS<\/p>\n

Question 41.
\nA collection of large number of light rays is called a …………………….. of light. ( )
\n(A) pack
\n(B) cluster
\n(C) beam
\n(D) wave
\nAnswer:
\n(C) beam<\/p>\n

Question 42.
\nWhen a collection of light rays travel parallel to one another such collection of rays is called ………………… beam of light. ( )
\n(A) convergent
\n(B) divergent
\n(C) parallel
\n(D) coincident
\nAnswer:
\n(C) parallel<\/p>\n

Question 43.
\nThe path along which light energy travels in a given direction is called ……………… of light. ( )
\n(A) ray
\n(B) pack
\n(C) wave
\n(D) quantum
\nAnswer:
\n(A) ray<\/p>\n

Question 44.
\nWhen the rays of light coming from different directions meet at a point, then the collection or such rays is called ( )
\n(A) divergent beam
\n(B) parallel beam
\n(C) convergent beam
\n(D) none of these
\nAnswer:
\n(C) convergent beam<\/p>\n

Question 45.
\nWhen the rays of light starting from a point travel in different directions such collection of rays is called ( )
\n(A) divergent beam
\n(B) convergent beam
\n(C) parallel beam
\n(D) dispersed beam
\nAnswer:
\n(A) divergent beam<\/p>\n

Question 46.
\nA medium through which light can travel freely Is called ………………………. medium. ( )
\n(A) translucent
\n(B) opaque
\n(C) transparent
\n(D) none of these
\nAnswer:
\n(A) translucent<\/p>\n

Question 47.
\nKaruna observed her image on a mirror to be magnified. This is due to the beam of light gets : ( )
\n(A) converged
\n(B) diverged
\n(C) both A & B
\n(D) none
\nAnswer:
\n(B) diverged<\/p>\n

Question 48.
\nThe bodies which emit light and act as sources of light are called ……………………. bodies. ( )
\n(A) luminous
\n(B) gloomy
\n(C) shining
\n(D) glowing
\nAnswer:
\n(A) luminous<\/p>\n

Question 49.
\nThe ratio of the focal length of spherical mirror to its radius of curvature is ()
\n(A) 0.5
\n(B) 1
\n(C) 2
\n(D) 3
\nAnswer:
\n(A) 0.5<\/p>\n

Question 50.
\nThe image formed by a concave mirror ( )
\n(A) is always real
\n(B) is always virtual
\n(C) can be both real and virtual
\n(D) none of these
\nAnswer:
\n(C) can be both real and virtual<\/p>\n

Question 51.
\nStarting from a long distance, a flame is moved towards a convex mirror. Then the image ( )
\n(A) decreases In size and moves towards pole
\n(B) increase in size and moves towards pole
\n(C) decrease in size and moves away from pole
\n(D) increase in size and moves away from pole
\nAnswer:
\n(B) increase in size and moves towards pole<\/p>\n

Question 52.
\nFor real and inverted image magnification is ( )
\n(A) negative
\n(B) positive
\n(C) A and B
\n(D) none
\nAnswer:
\n(A) negative<\/p>\n

\"TS<\/p>\n

Question 53.
\nFor a virtual and erect image magnification is ( )
\n(A) negative
\n(B) positive
\n(C) A and B
\n(D) none
\nAnswer:
\n(A) negative<\/p>\n

Question 54.
\nA ray which seems to be travelling through the focus of a convex mirror pass ……………… after reflection. ( )
\n(A) parallel to the axis
\n(B) along the same path in opposite direction
\n(C) through F
\n(D) through C
\nAnswer:
\n(D) through C<\/p>\n

Question 55.
\nThe image formed by a concave mirror is virtual, erect and magnified. The position of object is ( )
\n(A) at Focus
\n(B) between focus and centre of curvature
\n(C) at pole
\n(D) between pole and focus
\nAnswer:
\n(B) between focus and centre of curvature<\/p>\n

Question 56.
\nIn order to obtain a magnification of -2 with a concave mirror, the object should be placed. ( )
\n(A) between pole and focus
\n(B) between focus and centre of curvature
\n(C) at the centre of curvature
\n(D) beyond the centre of curvature
\nAnswer:
\n(C) at the centre of curvature<\/p>\n

Question 57.
\nThe magnification of an object placed at a distance of 6cm in front of a concave mirror is — 3. It mears ( )
\n(A) The image Is formed at a distance of 2 cm in front of the mirror
\n(B) The image is formed at a distance of 2 cm in the mirror
\n(C) The image is formed at a distance of 18 cm in front of the mirror
\n(D) The image is formed at a distance of 18 cm in the mirror
\nAnswer:
\n(C) The image is formed at a distance of 18 cm in front of the mirror<\/p>\n

\"TS<\/p>\n

Question 58.
\nConvex mirror is used as ……………………. . ( )
\n(A) Shaving mirror
\n(B) Focussing mirror
\n(C) Rear-view mirror
\n(D) Vehicle head-lights reflector
\nAnswer:
\n(C) Rear-view mirror<\/p>\n","protected":false},"excerpt":{"rendered":"

These\u00a0TS 10th Class Physical Science Bits with Answers Chapter 1 Reflection of Light at Curved Surfaces will help students to enhance their time management skills. TS 10th Class Physical Science Bits Chapter 1 Reflection of Light at Curved Surfaces Question 1. The surface of a polished metal spoon bulged outwards can be approximated to a … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/posts\/14274"}],"collection":[{"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/comments?post=14274"}],"version-history":[{"count":11,"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/posts\/14274\/revisions"}],"predecessor-version":[{"id":14347,"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/posts\/14274\/revisions\/14347"}],"wp:attachment":[{"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/media?parent=14274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/categories?post=14274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tsboardsolutions.in\/wp-json\/wp\/v2\/tags?post=14274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}