Light Reflection and Refraction MCQ Questions Class 10 Science Chapter 10

Light Reflection and Refraction MCQ Questions Class 10 Science Chapter 10

NCERT MCQ Questions for Class 10 Science Chapter 10 Light Reflection and Refraction. Light Reflection and Refraction MCQ Questions with Answers from Class 10 Science.

Light Reflection and Refraction MCQ Questions Class 10 Science Chapter 10

Light Reflection and Refraction Multiple Choice Questions with Answers Class 10 Science Chapter 10 PDF is available.

1) The bouncing back of the ray in the same medium is called as

a) Refraction

b) Reflection

c) Dispersion

d) Diffraction

Ans: b) reflection

2) The angle of incidence is equal to the

a) Angle of glancing

b) Angle of deviation

c) Angle of reflection

d) Angle refraction

Ans: c) Angle of reflection

3) The image formed by the plane mirror is always

a) Virtual, erect and diminished

b) Virtual, erect and magnified

c) Virtual, erect and of the same size

d) Real, erect and of the same size

Ans: c) virtual, erect and of the same size

4) For spherical mirrors the relationship between radius of curvature R and focal length is

a) R=f/2

b) F= R/2

c) F= 2R

d) R= 2f

Ans: d) R= 2f

5) Concave mirror is also called as

a) Converging mirror

b) Diverging mirror

c) Both a and b

d) None

Ans: a) converging mirror

6) Convex mirror is also called as

a) Converging mirror

b) Diverging mirror

c) Both a and b

d) None

Ans: b) diverging mirror

7) When the object is placed at infinity in case of concave mirror then the image formed will be at

a) At centre C

b) Between F and C

c) At infinity

d) At the focus F

Ans: d) At the focus F

8) If the object is placed at infinity in case of concave mirror then image formed at the focus F will be

a) Real, inverted, diminished

b) Real, inverted, diminished with point size

c) Real, inverted, magnified

d) Virtual, inverted, magnified

Ans: b) real, inverted, diminished with point size

9) When the object is placed behind C in case of concave mirror then the image formed will be

a) Between F and C

b) Beyond C

c) At infinity

d) At C

Ans: a) between F and C

10) When the object is placed at C in case of concave mirror then the image formed will be

a) Beyond C

b) At infinity

c) At the focus F

d) At C

Ans: d) at C

11) When the object is placed between C and F in case of concave mirror then the image formed will be at

a) At C

b) At infinity

c) Beyond C

d) At F

Ans: c) Beyond C

12) If the object is placed at F in case of concave mirror then the image formed will be at

a) At infinity

b) At C

c) At F

d) Between C and F

Ans: a) at infinity

13) When the object is placed between P and F in case of concave mirror  then the image formed will be at

a) At C

b) At infinity

c) At F

d) Behind the mirror

Ans: d) behind the mirror

14) When is the image formed will be virtual and erect in case of concave mirror

a) Object is placed at C

b) Object placed at F

c) Object is placed between F and C

d) Object is placed between P and F

Ans: d) object is placed between P and F

15) The mirrors used in torches, search lights and vehicle headlights to get powerful parallel beam of light are

a) Convex mirror

b) Convex lens

c) Concave mirror

d) Concave lens

Ans: c) concave mirror

16) The image t due to convex mirror is always

a) Real

b) Virtual

c) Real and erect

d) Virtual and erect

Ans: d) virtual and erect

17) When the object is placed at infinity in case of convex mirror then image formed will be

a) At F

b) Between P and F

c) At focus F, behind the mirror

d) Not defined

Ans: c) at focus F, behind the mirror

18) In real view mirrors of vehicles the mirrors used are

a) Concave mirror

b) Convex mirror

c) Plane mirror

d) Both a and b

Ans: b) convex mirror

19) The mirror formula is given by,

a) 1/f = 1/u -1/v

b) 1/f = 1/u + 1/v

c) 1/v = 1/f + 1/u

d) 1/u= 1/f + 1/v

Ans: b) 1/f = 1/u + 1/v

20) Magnification in case of spherical mirrors is given by

a) M= -u/v

b) M= u/v

c) M= v/u

d) M= -v/u

Ans: d)M= -v/u

In case you are missed :- Previous Chapter MCQ Questions

21) The magnification m if the image is real then

a) Negative

b) Positive

c) Both a and b

d) None

Ans: a) negative

22) The magnification m if the image is virtual then

a) Negative

b) Positive

c) Both a and b

d) None

Ans: b) positive

23) When a ray of light travels from one transparent medium to other transparent medium then it changes its path in the second medium is called as

a) Dispersion

b) Reflection

c) Refraction

d) Diffraction

Ans: c) refraction

24) The ratio of sine of angle of incidence and the sine of angle of refraction is called as

a) A constant

b) Snell’s law

c) Refractive index of the medium

d) Both b and c

Ans: d) both b and c

25) Clay cannot be used to make lens because it is totally

a) Transparent

b) Optical

c) Opaque

d) Both a and b

Ans: c) opaque

26) The focal length of concave mirror and concave lens is always

a) Positive

b) Negative

c) Both a and b

d) None

Ans: b) negative

27) The image obtained is always erect in

a) Convex mirror

b) Concave mirror

c) Plane mirror

d) Both a and c

Ans: d) both a and c

28) In solar furnaces which mirror are used

a) Convex mirror

b) Concave mirror

c) Plane mirror

d) Both a and c

Ans: b) concave mirror

29) A ray of light traveling  from rarer medium to denser medium bends

a) Away from the normal

b) Towards the normal

c) Both a and b

d) None

Ans: b) bends towards the normal

30) A ray of light traveling from denser medium to rarer medium bends

a) Away from the normal

b) Towards the normal

c) Both a and b

d) None

Ans: a) away from the normal

31) The SI unit of power of lens is

a) Joule

b) Watt

c) Dioptre

d) J/s

Ans: c) dioptre

32) 1D =

a) 1m

b) 1m-1

c) 1/2m

d) 0.1m

Ans: b) 1D= 1m-1

33) The relation between power of lens P and focal length f is

a) P= 2f

b) P= 1/f

c) F= 1/P

d) F= 2P

Ans: b) P=1/f

34) When the ray is incident at an angle of incidence 90° then

a) There will be reflection

b) There will be no reflection

c) Both a and b

d) Can’t say

Ans: b) there will be no reflection

35) Total internal reflection is observed in

a) Prism

b) Grating

c) Glass

d) Diamond

Ans: d) diamond

36) If radius of curvature of concave mirror is 15cm then it’s focal length will be

a) 7cm

b) 30cm

c) 7.5cm

d) -7.5cm

Ans: c) 7.5cm

37) When we insert a coin to a glass half filled with water then coin appears as raised slightly which is due to

a) Reflection

b) Refraction

c) Diffraction

d) Dispersion

Ans: b) refraction

38) The mirrors used by dentist are

a) Convex mirror

b) Plane mirror

c) Concave mirror

d) Both a and c

Ans: c) concave mirror

39) The phenomenon of mirage is due to

a) Reflection

b) Refraction

c) Dispersion

d) Total internal reflection

Ans: d) total internal reflection

40) The focal length of concave mirror and concave lens is

a) Positive

b) Negative

c) Both a and b

d) None

Ans: b) negative

41) The focal length of convex mirror and convex lens is

a) Negative

b) Positive

c) Both a and b

d) None

Ans: b) positive

42) The mirrors used in shopping malls are

a) Concave mirror

b) Plane mirror

c) Convex mirror

d) Both a and b

Ans: c) convex mirror

43) The power of the lens depends on

a) Focal length

b) Radius of curvature

c) Both a and b

d) None

Ans: a) focal length

44) The refractive index of the medium is given by,

a) u= v/c

b) u= c/v

c) C= v/u

d) u= CV

Ans: u= c/v

45) The phenomenon of spreading of light into its constituents is called as

a) Dispersion

b) Refraction

c) Interference

d) Diffraction

Ans: a) dispersion

46) The blue colour of the sky is due to

a) Dispersion

b) Reflection

c) Refraction

d) Scattering

Ans: d) scattering

In case you are missed :- Next Chapter MCQ Questions

Updated: April 12, 2023 — 11:20 am