A sound wave has time period 0.01 s. Its frequency is MCQ with Answer and Explanation

A sound wave has time period 0.01 s. Its frequency is
A. 1000 Hz
B. 10 Hz
C. 100 Hz
D. 0.1 Hz
Answer: Option C
Solution (By JKSSB Mock Tests)
f = 1/T = 1/0.01 = 100 Hz.

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Practice More Physics Questions

Question #1
The substance used as moderator in nuclear reactor must
A. Cool the reactor
B. Absorb neutrons
C. Slow down neutrons without absorbing them
D. Increase neutron energy

Correct Answer: Option C


Explanation:
Moderator slows neutrons via elastic collisions, low absorption. Heavy water, graphite.

This question belongs to: Science Physics
Question #2
In a p-type semiconductor, the majority charge carriers and the minority charge carriers are respectively:
A. Protons and Electrons
B. Holes and Electrons
C. Electrons and Holes
D. Ions and Holes

Correct Answer: Option B


Explanation:
A p-type semiconductor is created by doping a pure semiconductor (like Silicon) with a trivalent impurity (like Boron). This creates a deficiency of one electron, creating a 'hole'. These positive holes vastly outnumber the thermally generated free electrons. Thus, holes are the majority charge carriers, and electrons are the minority charge carriers.

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Question #3
The defect of vision in which the lens becomes opaque is called
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C. Astigmatism
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Correct Answer: Option D


Explanation:
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This question belongs to: Science Physics