Light Reflection And Refraction Quiz!
(178).jpg "Light Reflection And Refraction Quiz!")
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- 1.If an incident ray passes through the focus of the concave mirror the reflected ray will?
- A.
Pass through the pole
- B.
Parallel to the principal axis
- C.
Retrace its path
- D.
Passes through the centre of curvature
- 2.The refractive index of ice, salt & glass is 1.31 1.54, and 1.52 respectively which light travels faster and slower.
- A.
Ice and class
- B.
Glass and ice
- C.
Ice and salt
- D.
Salt and ice
- 3.Power of a lens is reciprocal of?
- A.
Principal axis
- B.
Principal focus
- C.
Focal length
- D.
Radius of curvature
- 4.When the object is placed between f and 2f of a convex lens the image formed is?
- A.
At f
- B.
At 2f
- C.
Beyond 2f on the other side
- D.
Between F & 2F on the same side
- 5.A Ray of light traveling from a rarer medium to a denser medium.
- A.
Bend away from the normal
- B.
Bend towards normal
- C.
Go straight
- D.
It does not bend
- 6.
![A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labeling indicated in figure: - ProProfs]( "A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labeling indicated in figure:")
A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labeling indicated in figure:- A.
IV
- B.
I
- C.
II
- D.
III
- 7.The image formed by the plane mirror is:
- A.
Real and erected
- B.
Real and inverted
- C.
Virtual and erected
- D.
Virtual and inverted
- 8.A concave mirror gives the real inverted and same size of the image and object is placed.
- A.
At f
- B.
At infinity
- C.
At C
- D.
Beyond c
- 9.The radius of curvature 200 CM it's focal length is:
- A.
,0.5 metre
- B.
1 metre
- C.
100 m
- D.
25m
- 10.The diverging lenses:
- A.
Concave lens
- B.
Convex mirror
- C.
Convex lens
- D.
Concave mirror
- 11.The focal length of a lens or a mirror or lens is always half of the length of the radius of curvature.
- A.
True
- B.
False
- 12.Which of them is not paired correctly 1. Solar furnace -concave mirror 2.RearRear view mirror -convex mirror 3. Magnifying glass -convex lens 4. Shaving mirror - convex mirror
- A.
3
- B.
2
- C.
4
- D.
3
- 13.Bending of light is called?
- A.
Polarization
- B.
Reflection
- C.
Dispersion
- D.
Refraction
- E.
None of the above
- 14.The angle of incidence for a Ray of light having 0 reflection angle is:
- A.
0°
- B.
45°
- C.
90°
- D.
180°
- 15.The speed of the light in water is 2.5X10 power 8 metres per second if the speed of the lit in a vacuum is 3 X 10 power 8 metres per second. Calculate the refractive index of it travels From water to vacuum.
- 16.The laws of reflection hold good for?
- A.
Plane mirrors only
- B.
Concave mirrors only
- C.
Convex mirrors only
- D.
All the mirror irrespective of their shape
- 17.Light travels fastest in?
- A.
Glass
- B.
Air
- C.
Vacuum
- D.
Water
- 18.The image formed by a compound microscope is?
- A.
Real and enlarged
- B.
Real and diminished
- C.
Virtual and enlarged
- D.
Virtual and diminished
- 19.Which of them converge parallel light rays incident upon them?
- A.
Concave mirror
- B.
Plane mirror
- C.
Convex mirror
- D.
Both concave and convex
- 20.The image formed by the actual reflection of light is?
- A.
Virtual and erected image
- B.
Real and erected image
- C.
Virtual and Enlarged image
- D.
Real and inverted image
- 21.What will be the power of the lens if the focal length is reduced to 1 by 4?
- A.
Power of lens doubles
- B.
Power of lens reduced to half of it
- C.
Power of lens increases by four times
- D.
Power of lens decreases by 4 times
- 22.The center of the reflecting surface of a spherical mirror is called?
- A.
Pole
- B.
Principal axis
- C.
Principal focus
- D.
Centre of curvature
- 23.Whenever a Ray of light passes from denser to rarer:
- A.
I=r
- B.
I<r
- C.
I>r
- D.
R=i
- 24.The following is not the property of the image formed on the plane mirror.
- A.
Images virtual
- B.
Images laterally inverted
- C.
Image is same size of object
- D.
Images real and same size
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