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Test: Light - 2 - Class 7 MCQ


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10 Questions MCQ Test Science Class 7 - Test: Light - 2

Test: Light - 2 for Class 7 2025 is part of Science Class 7 preparation. The Test: Light - 2 questions and answers have been prepared according to the Class 7 exam syllabus.The Test: Light - 2 MCQs are made for Class 7 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Light - 2 below.
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Test: Light - 2 - Question 1

What are the characteristics of an image formed by a plane mirror?

Detailed Solution for Test: Light - 2 - Question 1

Images formed by a plane mirror are upright, virtual, and the same size as the object.

Test: Light - 2 - Question 2

What type of image is formed by a concave lens?

Detailed Solution for Test: Light - 2 - Question 2
A concave lens forms a virtual and erect image. The light rays diverge when they pass through the lens, making the image appear to be on the same side as the object and upright.
Test: Light - 2 - Question 3

In a mirror maze, why do people see several images of themselves?

Detailed Solution for Test: Light - 2 - Question 3

Mirror makes utilize the principle of reflection in plane mirrors, creating multiple images of the observer.

Test: Light - 2 - Question 4

What is a convex mirror used for in security measures in supermarkets, stores, and ATM centers?

Detailed Solution for Test: Light - 2 - Question 4

Convex mirrors are used for security to have a broader view, as they produce virtual, erect, and diminished images.

Test: Light - 2 - Question 5

What is the characteristic feature of the image formed by a convex lens when the object is placed very close to it?

Detailed Solution for Test: Light - 2 - Question 5

When the object is close to a convex lens, the image formed is virtual, erect, and magnified.

Test: Light - 2 - Question 6
An image that cannot be obtained on a screen is called __________.
Detailed Solution for Test: Light - 2 - Question 6
An image that cannot be obtained on a screen is called a virtual image. This is because virtual images are formed by the apparent divergence of light rays from a point, rather than the actual convergence that produces a real image.
Test: Light - 2 - Question 7

If initially David is 4 meters far from the mirror, he moves 1 meter towards a plane mirror, the distance between David and his image will be:

Detailed Solution for Test: Light - 2 - Question 7

When David is 4 meters away from the mirror, the image is also 4 meters away from the mirror, making the total distance between David and his image 8 meters.

If David moves 1 meter closer to the mirror, he will be 3 meters away from it. His image will still be 3 meters behind the mirror, so the new distance between David and his image is:

3 meters (David to mirror)+3 meters (mirror to image)=6 meters.

Thus, the correct answer is c) 6 meters.

Test: Light - 2 - Question 8
What happens when a disc with seven rainbow colours is rotated fast?
Detailed Solution for Test: Light - 2 - Question 8
When the disc with seven rainbow colours is rotated fast, the colours mix together and the disc appears to be whitish, as demonstrated by Newton's disc.
Test: Light - 2 - Question 9
Why is the word 'AMBULANCE' written in reverse on the front of an ambulance?
Detailed Solution for Test: Light - 2 - Question 9
The word 'AMBULANCE' is written in reverse so that drivers ahead of the ambulance can read it in their rear view mirrors and give way to it.
Test: Light - 2 - Question 10
What happens when sunlight passes through a glass prism?
Detailed Solution for Test: Light - 2 - Question 10
When sunlight passes through a glass prism, it splits into seven colours, forming a spectrum that includes red, orange, yellow, green, blue, indigo, and violet.
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