Wave and Light MCQs (Physics)

The distance between two successive peaks of a wave is called a ___________.

Light pollution

Resolving power

Wavelength

Reflecting

Answer

Correct Answer: Wavelength

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The discovery of radioactivity closely followed the discovery of _________.

X-rays

Gamma radiations

Nuclear plants

Answer

Correct Answer: X-rays

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_____ is the number of wave cycles that occur in a second.

Frequency

Velocity

Amplitude

Angular velocity

Answer

Correct Answer: Frequency

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The wavelength of light that has a frequency of 1.20 ? 1013 s-1 is ________ m.

25.0

2.5 x 1o-5m

10,000

Depends on wavelenth

Answer

Correct Answer: 2.5 x 1o-5m

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The wavelength of a photon that has an energy of 6.33 ? 10-18 j is ________ m.

3.79*10^-7

3.10*10^-8

2.38*10^23

4.21*10^-24

Answer

Correct Answer: 3.10*10^-8

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Yellow light + blue light = _______ light

Red light

White light

Black light

Orange light

Answer

Correct Answer: White light

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A fishing boat using sonar to locate fish is employing _____.

Diffraction

Reflection

Refraction

Interference

Answer

Correct Answer: Reflection

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