The frequency of a wave is 1 kHz. Its time period is MCQ with Answer and Explanation

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The frequency of a wave is 1 kHz. Its time period is

A. 0.001 s

B. 1000 s

C. 1 s

D. 0.01 s

Answer: Option A

Solution (By JKSSB Mock Tests)

T = 1/f = 1/1000 = 0.001 s = 1 ms.

This question belongs to: Science Physics

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Question #1

The Nobel Prize in Physics 1901 was awarded to

A. Röntgen

B. Planck

C. Einstein

D. Curie

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Correct Answer: Option A

Explanation:
Wilhelm Röntgen for discovery of X-rays.

This question belongs to: Science Physics

Question #2

Electromagnetic induction was discovered by

A. Faraday

B. Coulomb

C. Oersted

D. Ampere

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Correct Answer: Option A

Explanation:
Michael Faraday discovered electromagnetic induction in 1831: changing magnetic field induces emf. Oersted discovered magnetic effect of current. Ampere gave laws of magnetic force between currents. Coulomb for electrostatics.

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Question #3

The time of flight of a projectile is maximum when angle of projection is

A. 30°

B. 45°

C. 60°

D. 90°

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Correct Answer: Option D

Explanation:
T = 2u sinθ/g, max when sinθ=1 => θ=90° (vertical).

This question belongs to: Science Physics

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