Light Test

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Light Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

When a beam of light from an object actually meets at a point after reflection from a mirror then the image formed is known as:

A
either real or virtual image

B
real image

C
virtual image

D
neither real nor virtual image

Solution

According to definition,when a beam of light from an object meets actually at a point after reflection from a mirror then the image formed is real. Real images can be obtained on a screen.
Question 2
1 / -0

When an image of an object is seen in a plane mirror, the distance from the mirror to the image depends on:

A
the distance of the observer from the mirror

B
the distance of the object from the mirror

C
the distance of both the observer and the object to the mirror

D
the thickness of the mirror

Solution

For plane mirrors, the image distance is the same as the object distance. The image distance from the mirror does not depend on the distance of the observer from the mirror. Thus if we change the object distance then only the image distance or the distance between the object and image will be affected.
Question 3
1 / -0

When light is reflected from the a spherical or curved surface:

A
the laws of reflections are followed

B
the laws of reflections are not followed

C
the laws of reflections may or may not be followed

D
one of the laws is followed, the other is not

Solution

The laws of reflection hold good irrespective of shape of the reflecting surface. So, the laws hold good for spherical or curved surfaces too.
Question 4
1 / -0

No matter how far you stand from a mirror, your image always appears erect. Then the mirror among the following is likely to be:

A
A plane mirror

B
A concave mirror

C
Any type of mirror

D
None of the above

Solution

A plane mirror always forms an erect image, no matter how far you stand from a mirror.

Hence, the correction option is A.
Question 5
1 / -0

Image formed by a plane mirror is:

A
Erect, virtual and of same size of the object

B
Inverted, real and of smaller size than the object

C
Erect, real and of same size as the object

D
Inverted, virtual and of smaller size of the object

Solution

The image formed by a plane mirror is always virtual (meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting.
Question 6
1 / -0

For a single object, how many images are formed by a single plane mirror?

A
1

B
2

C
3

D
4

Solution

A single plane mirror can form only a single image for a single object.
Question 7
1 / -0

Which of the following most appropriately defines a spectrum?

A
The band of seven colours is known as spectrum

B
The process of splitting of white light into seven colours is known as spectrum

C
The different wavelengths of light are termed as spectrum

D
All of the above

Solution

Visible range consists of seven different colours i.e, VIBGYOR. The band of these seven colours is known as spectrum.
Question 8
1 / -0

What is the sequence of colors obtained on splitting of white light?

A
VBIGYOR

B
VIBGOYR

C
VIBGYOR

D
VIGBYOR

Solution

The sequence of colors obtained on the splitting of white light is VIBGYOR- Violet, indigo, blue, green, yellow, orange, and red.
Question 9
1 / -0

Sunlight is made up of ____ colors.

A
7

B
6

C
5

D
4

Solution

Isaac Newton was the first person to split sunlight into seven colors using a glass prism. When he tried to split the band of colors further using a second prism placed in the inverted position as compared to that of the first, he observed that the emergent ray was white colored. This gave him an idea that sunlight is made up of 7 colors and any other light that gives a spectrum similar to that of sunlight is often referred to as white light.
Question 10
1 / -0

The image which can be obtained on a screen is called

A
a virtual image

B
a real image

C
either a real or a virtual image

D
neither a real nor a virtual image

Solution

The image which can be obtained on a screen is called a real image.

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Re-Attempt Weekly Quiz Competition

Light Test - 10

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Light Test - 10

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SHARING IS CARING

Question 1

either real or virtual image

real image

virtual image

neither real nor virtual image

Solution

Question 2

the distance of the observer from the mirror

the distance of the object from the mirror

the distance of both the observer and the object to the mirror

the thickness of the mirror

Solution

Question 3

the laws of reflections are followed

the laws of reflections are not followed

the laws of reflections may or may not be followed

one of the laws is followed, the other is not

Solution

Question 4

A plane mirror

A concave mirror

Any type of mirror

None of the above

Solution

Question 5

Erect, virtual and of same size of the object

Inverted, real and of smaller size than the object

Erect, real and of same size as the object

Inverted, virtual and of smaller size of the object

Solution

Question 6

1

2

3

4

Solution

Question 7

The band of seven colours is known as spectrum

The process of splitting of white light into seven colours is known as spectrum

The different wavelengths of light are termed as spectrum

All of the above

Solution

Question 8

VBIGYOR

VIBGOYR

VIBGYOR

VIGBYOR

Solution

Question 9

7

6

5

4

Solution

Question 10

a virtual image

a real image

either a real or a virtual image

neither a real nor a virtual image

Solution

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