Hello Mam/Sir, Can u plez provide me MCQ'S of Science CH Light Reflection and Refraction Thank you
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Solution
The speed of light is_______ in vacuum.
3 x 105 m/s
3 x 108 m/s
3 x 108 km/s
3 x 106 m/s
The wavelength of the visible light is ________.
4 x 10(-7) to 8 x 10(-7) m
4 x 107 to 8 x 107 m
4 x 10(-7) to 8 x 10(-7) Å
4 x 107 to 8 x 107 Å
We can see objects because of_______
reflection
refraction
transmission
diffraction
The image formed by a convex mirror is always________
real
enlarged
virtual and enlarged
diminished
As you move an object away from a convex mirror, its image becomes_____ and moves towards______
smaller, infinity
smaller, focus
enlarged, infinity
enlarged, focus
For a spherical mirror, ______ is true.
f = 2R
R = 2f
fR = 2
fR = 1/2
The mirror formula is ________.
1/u - 1/v = 1/f
1/f + 1/u = 1/v
f = uv/(u+v)
f = (u+v)/uv
For a plane mirror, magnification (m)=________
0
1
± 1
≤ 0
Magnification for convex mirror is ________.
always positive
always negative
sometimes positive
1
The image formed by a concave lens is ________.
always real and enlarged
always real and diminished
always virtual and enlarged
always virtual and diminished
The lens formula is ________.
1/f = 1/u + 1/v
1/f = 1/u - 1/v
1/f = 1/v - 1/u
1/f + 1/v = u
1 diopter = ________.
1 m
1 m(-1)
1 cm
1 cm(-1)
Which of the following is a true statement?
The power of a lens is always positive.
The power of a lens is always negative.
The power of a convex lens is positive.
The power of a concave lens is positive.
Image formed by a concave mirror is erect and enlarged.What is the position of the object?
Between focus F and the center of curvature
At the center of curvature
Beyond the center of curvature
Between pole and the focus
If the focal length of a spherical mirror is 40 cm, then its radius of curvature is _______ cm.
80
20
10
5
The velocity of light in vacuum is _______ ms(-1)
3 x 106
3 x 108
3 x 10 12
3 x 1015
If the angle of incidence, θi = 0°, the angle of reflection, θr = ________.
0°
90°
180°
45°
No matter how far is the object from the mirror, the image of the object appears erect. The mirror is ________.
concave
convex
either concave or convex
none of these
A boy is standing at a distance of 2 m in front of a plane mirror.The distance between the boy and his image is ________ m.
4
3
2
1
The image formed by a concave mirror is real, inverted and of the same size as that of the object.The position of the object should be ________.
beyond the center of curvature of mirror
between the center of curvature and the focus
at the center of curvature of the mirror
at the focus
Which of the following has the highest refractive index?
Glass
Water
Pearl
Diamond
Absolute refractive index of any medium is always _______.
1
> 1
< 1
0
The image formed by a plane mirror is ______.
real
diminished
enlarged
laterally inverted
The incident ray passing through the focus(F) of a mirror ______ after reflection.
passes through C
passes through F
becomes parallel to the principal axis
passes through the pole
The incident ray passing through the center of curvature(C) of a mirror ______ after reflection.
passes through C
passes through F
passes through the pole
becomes parallel to the principal axis
The incident ray parallel to the principal axis of a mirror ______ after reflection.
passes through C
passes through F
passes through the pole
reverts back in the opposite direction
According to the sign convention, the distance of object...
is always positive
is always negative
may be positive or negative
is equal to object height
According to the sign convention, the distance of image...
is always positive
is always negative
may be positive or negative
is equal to image height
The refractive index of a denser medium with respect to a rarer medium is...
1
greater than 1
smaller than 1
negative
The refractive index of a rarer medium with respect to a denser medium is...
1
greater than 1
smaller than 1
negative
Total internal reflection will occur if the angle of reflection is...
45°
60°
90°
99°
Magnification for ______ image is always ______.
real, positive
real, negative
virtual, negative
any, negative
If magnification is +1.5, the image is______.
erect
diminished
real
inverted
(1) B (2) A (3) A (4) D (5) B (6) B (7) C (8) B (9) A (10) D (11) C (12) B (13) C (14) D (15) A (16) B (17) A (18) B (19) A (20) C (21) D (22) B (23) D (24) C (25) A (26) B (27) B (28) C (29) B (30) C (31) D (32) B (33) A