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Questions and Answers
Which objects are considered luminous?
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?
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?
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?
What happens to the speed and wavelength of light when it travels from one medium to another?
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What are non-luminous objects?
What are non-luminous objects?
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