Light Shadows And Reflection Test

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Light Shadows And Reflection Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

small air bubble in a glass block when seen from above appears to be raised because of

A
refraction of light

B
dispersion

C
reflection of light

D
both (1) and (3)
Question 2
1 / -0

If the speed of light in a medium A is slower than in a medium B, which of the following statements is true?

A
Medium A is less optically denser than medium B.

B
Medium A is more optically denser than medium B.

C
Both have the same optical density.

D
Speed of light in a medium does not depend on its optical density.
Question 3
1 / -0

A concave lens always gives

A
inverted image

B
enlarged image

C
virtual image

D
all of these
Question 4
1 / -0

What happens to the power of a lens if its focal length is increased?

A
Increases

B
Decreases

C
Remains the same

D
Nothing can be said
Question 5
1 / -0

A magnifying glass forms

A
a real and magnified image

B
a real and diminished image

C
a virtual and magnified image

D
a virtual and diminished image
Question 6
1 / -0

In the spectrum of white light by a prism, which colour is at the extreme end opposite to the base of the prism?

A
Violet

B
Blue

C
Red

D
Indigo
Question 7
1 / -0

White light breaks up into seven colours due to

A
reflection of light

B
refraction of light

C
dispersion of light

D
none of these
Question 8
1 / -0

Choose the incorrect statement.

A
The band of the coloured components of a light beam is called its spectrum.

B
The splitting of white light into its component colours is called dispersion.

C
Violet colour of white light travels the fastest in glass.

D
The colours of spectrum of white light combine to reproduce white light.
Question 9
1 / -0

Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?

A
Dispersion of light

B
Total internal reflection of light

C
Reflection of light from the earth

D
Scattering of light
Question 10
1 / -0

At noon, the sun appears white as

A
light is least scattered

B
all the colours of the white light are scattered away

C
blue colour is scattered the most

D
red colour is scattered the most

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Re-Attempt Weekly Quiz Competition

Light Shadows And Reflection Test - 6

Result

Light Shadows And Reflection Test - 6

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Rank

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SHARING IS CARING

Question 1

refraction of light

dispersion

reflection of light

both (1) and (3)

Question 2

Medium A is less optically denser than medium B.

Medium A is more optically denser than medium B.

Both have the same optical density.

Speed of light in a medium does not depend on its optical density.

Question 3

inverted image

enlarged image

virtual image

all of these

Question 4

Increases

Decreases

Remains the same

Nothing can be said

Question 5

a real and magnified image

a real and diminished image

a virtual and magnified image

a virtual and diminished image

Question 6

Violet

Blue

Red

Indigo

Question 7

reflection of light

refraction of light

dispersion of light

none of these

Question 8

The band of the coloured components of a light beam is called its spectrum.

The splitting of white light into its component colours is called dispersion.

Violet colour of white light travels the fastest in glass.

The colours of spectrum of white light combine to reproduce white light.

Question 9

Dispersion of light

Total internal reflection of light

Reflection of light from the earth

Scattering of light

Question 10

light is least scattered

all the colours of the white light are scattered away

blue colour is scattered the most

red colour is scattered the most

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