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Questions and Answers
What is the speed of light in air?
What is the speed of light in air?
- 10 km/s
- 10 m/s (correct)
- 299,792,458 m/s
- 1000 km/s
What is the nature of light?
What is the nature of light?
- Water wave
- Sound wave
- Mechanical wave
- Electromagnetic wave (correct)
What is the range of wavelength of visible light?
What is the range of wavelength of visible light?
- 4 x 10^-5 m to 7 x 10^-4 m
- 4 x 10^-6 m to 7 x 10^-5 m
- 4 x 10^-9 m to 7 x 10^-7 m
- 4 x 10^-7 m to 7 x 10^-6 m (correct)
How are electromagnetic waves produced?
How are electromagnetic waves produced?
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Can mechanical waves travel through a vacuum?
Can mechanical waves travel through a vacuum?
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What is the direction of propagation of an electromagnetic wave?
What is the direction of propagation of an electromagnetic wave?
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