The physical quantity having unit henry is MCQ with Answer and Explanation

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The physical quantity having unit henry is

A. Inductance

B. Resistance

C. Capacitance

D. Conductance

Answer: Option A

Solution (By JKSSB Mock Tests)

Henry (H) = V·s/A = Ω·s.

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Question #1

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The number of significant figures in 0.02040 is

A. 5

B. 3

C. 2

D. 4

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Correct Answer: Option D

Explanation:
Leading zeros not significant. '2040' – trailing zero after decimal is significant. So digits 2,0,4,0 are significant = 4. Rule: zeros between non-zero and trailing zeros after decimal count.

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Question #2

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Sound waves of frequency 20 kHz are called

A. Infrasonic

B. Audible

C. Ultrasonic

D. Supersonic

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Correct Answer: Option C

Explanation:
Above 20 kHz is ultrasonic.

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Question #3

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The instrument used to measure intensity of earthquakes is

A. Seismograph

B. Barometer

C. Richter scale

D. Hygrometer

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Correct Answer: Option A

Explanation:
Seismograph records seismic waves. Richter scale quantifies magnitude.

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