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Ray Optics and Optical Instruments Quiz

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Questions and Answers

Which objects are considered luminous?

Sun and other stars (correct)

Flashlight and candles

Light bulbs and LED lights

Moon and planets

What is the speed of light in vacuum?

4 x 10^8 m/s

2 x 10^8 m/s

3 x 10^8 m/s (correct)

5 x 10^8 m/s

What is a real image?

Virtual and cannot be projected

Formed by reflection only

Formed by the actual meeting of light rays (correct)

Always smaller than the object

What happens to the speed and wavelength of light when it travels from one medium to another?

<p>Speed and wavelength change</p> Signup and view all the answers

What are non-luminous objects?

<p>Objects that do not emit their own light</p> Signup and view all the answers

Ray Optics and Optical Instruments Quiz

Choose a study mode

Podcast

Questions and Answers

Which objects are considered luminous?

What is the speed of light in vacuum?

What is a real image?

What happens to the speed and wavelength of light when it travels from one medium to another?

What are non-luminous objects?

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