Light Test

Result

Light Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

By which method can we change the direction of light?

A
Reflection

B
Absorption

C
Conduction

D
Insulation
Question 2
1 / -0

How many colours are present in the white light?

A
7

B
6

C
5

D
1
Question 3
1 / -0

An image is moving at the same rate as the object towards the mirror. What will be the state of the mirror?

A
Mirror is moving at a speed twice as that of the object.

B
Mirror is stationary.

C
Mirror is moving backwards from the object.

D
Mirror is moving at the same rate as the object.
Question 4
1 / -0

A truck is reversing at the speed of 10 m/s. A driver sees the image of a parked bicycle in its rear view plane mirror. At what speed does the image of the bicycle appears to be approaching the driver?

A
20 m/s

B
10 m/s

C
15 m/s

D
40 m/s
Question 5
1 / -0

The person has lost the screw of his wrist watch while repairing it. Which of the following items will help him while searching for the screw?

A
Magnifying glass

B
Reflector

C
Plane mirror

D
Diverging lens
Question 6
1 / -0

Inner surface of a spoon is analogous to which of the following types of mirror?

A
Both concave and convex mirrors

B
Convex mirror

C
Plane mirror

D
Concave mirror
Question 7
1 / -0

If a 6 m high candle is placed in front of a plane mirror, then what will be the height of the image?

A
12 m

B
3 m

C
9 m

D
6 m
Question 8
1 / -0

What is the diagrammatic representation of a concave lens?

A

B

C

D
Question 9
1 / -0

Why is the rear view mirror of a vehicle convex in shape?

A
As it forms only inverted images

B
As it always forms virtual images

C
As it forms images of objects spread over a large area

D
As it forms magnified images
Question 10
1 / -0

Which of the following is not a feature of a convex lens?

A
Thicker in the middle than at the edges

B
Transparent in nature

C
Acts a lot like a concave mirror.

D
Edges are thicker than the middle part
Question 11
1 / -0

One see a rainbow with one's

A
face towards the sun.

B
back towards the sun.

C
back towards the moon.

D
face towards the moon.
Question 12
1 / -0

The distance between an image of a ball and the ball itself is 15 m. If the ball rotates 2 m toward the mirror, what will be the distance between the image and the object?

A
11 m

B
17 m

C
7.5 m

D
6.5 m
Question 13
1 / -0

What is the nature of the reflecting surface used in the bell of bicycles?

A
Convex

B
Concave

C
Plane

D
Silvered glass
Question 14
1 / -0

Which of the following types of lens bend(s) the incident light outwards?

A
Plano-convex lens

B
Concave lens

C
Convex lens

D
All types of lens
Question 15
1 / -0

Which of the folllowing is not a use of a concave mirror?

A
In head lights of automobiles

B
As a rear view mirror to see traffic

C
To examine throat infection

D
Used by dentists for better examination

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Re-Attempt Weekly Quiz Competition

Light Test - 3

Result

Light Test - 3

Score

-

Rank

-

SHARING IS CARING

Question 1

Reflection

Absorption

Conduction

Insulation

Question 2

7

6

5

1

Question 3

Mirror is moving at a speed twice as that of the object.

Mirror is stationary.

Mirror is moving backwards from the object.

Mirror is moving at the same rate as the object.

Question 4

20 m/s

10 m/s

15 m/s

40 m/s

Question 5

Magnifying glass

Reflector

Plane mirror

Diverging lens

Question 6

Both concave and convex mirrors

Convex mirror

Plane mirror

Concave mirror

Question 7

12 m

3 m

9 m

6 m

Question 8

Question 9

As it forms only inverted images

As it always forms virtual images

As it forms images of objects spread over a large area

As it forms magnified images

Question 10

Thicker in the middle than at the edges

Transparent in nature

Acts a lot like a concave mirror.

Edges are thicker than the middle part

Question 11

face towards the sun.

back towards the sun.

back towards the moon.

face towards the moon.

Question 12

11 m

17 m

7.5 m

6.5 m

Question 13

Convex

Concave

Plane

Silvered glass

Question 14

Plano-convex lens

Concave lens

Convex lens

All types of lens

Question 15

In head lights of automobiles

As a rear view mirror to see traffic

To examine throat infection

Used by dentists for better examination

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