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13 Questions

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Understanding Light and Its Properties

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Questions and Answers

What is light primarily responsible for producing?

Sensation of vision (correct)

Energy conservation

Environmental warming

Plant growth

Which of the following is a natural source of light?

Electric bulbs

The Sun (correct)

Tube lights

CFL lamps

What is the speed of light in a vacuum?

2 x 10^8 meters per second

3 x 10^8 meters per second (correct)

5 x 10^8 meters per second

4 x 10^8 meters per second

What happens to light when it hits an object?

It is reflected or absorbed Signup and view all the answers

Which statement about the nature of light is true?

Light behaves as a ray, wave, or particles Signup and view all the answers

What is the primary reason we see colors in our world?

Due to light Signup and view all the answers

What is the speed of light when traveling through a medium like glass?

$2 x 10^8$ meters per second Signup and view all the answers

Which statement about glowworms is true?

Only female glowworms emit light Signup and view all the answers

Which of the following is NOT an artificial source of light?

Star Signup and view all the answers

What is true about luminous objects?

They emit their own light. Signup and view all the answers

Which of these is an example of a non-luminous object?

Chair Signup and view all the answers

What describes luminescence in luminous objects?

Light emission at room temperatures. Signup and view all the answers

Which of the following statements regarding artificial light is correct?

It is generated by sources like electrical bulbs and LED. Signup and view all the answers