Question

Que.1 Which of the following travels faster ? *

1)Jet Aero Plane
2)Sound
3)Light
4)Supersonic plane

Que.2 An example of luminous object is - *

1)Star
2)Smooth surface
3)Mirror
4)Cloth

Que.3 Which glass is coated in order to convert it into a mirror ? *

1)Silver
2)Copper
3)Aluminium
4)Platinum

Que.4 Angle of incidence is always - *

1)Equal to angle of reflection
2)Equal to angle of refraction
3)More than angle of reflection
4)Less than angle of reflection
Other:

Que.5 Braille system is used by - *

1)Hearing impaired
2)Black people
3)Blind people
4)African people
Other:

Que.6 Speed of light is fastest in - *

1)Air
2)Water
3)Diamond
4)Glass
Other:

Que.7 The process of banding of seven colours is called - *

1)Dispersion
2)Spectrum
3)Reflection
4)Normal
Other:

Que.8 The angle of reflection is equal to the angle of incidence - *

1)Sometimes
2)Always
3)Never
4)Under special case
Other:

Que.9 Beam of light striking the reflecting surface is called - *

1)Reflecting ray
2)Incident ray
3)Refracted Ray
4)Normal ray
Other:


Que.10 What makes the object visible ? *

1)Size
2)Time
3)Colour
4)Light
Other:
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Answer 1

ques 1

(2) sound

ques 2

(2) luminous object

ques 3

(1) silver

ques 4

(1) is equal to angle of reflection

ques 5

(3) blind people ( not sure)

ques 6

(1) air

ques 7

(1)dispersion

ques 8

(2) always

ques 9

(2) incident ray

ques 10

(4) light

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