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
Thanks dude