The unit of magnetic flux is MCQ with Answer and Explanation

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The unit of magnetic flux is

A. Weber

B. Farad

C. Tesla

D. Henry

Answer: Option A

Solution (By JKSSB Mock Tests)

Weber (Wb) = T m².

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Question #1

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Weight of an object on the Moon is about _____ of its weight on Earth.

A. 1/2

B. 1/8

C. 1/6

D. 1/4

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Correct Answer: Option C

Explanation:
Moon's gravity is about 1/6th of Earth's gravity. So weight (mg) is 1/6 of Earth weight. Mass remains same. g_moon ≈ 1.62 m/s², g_earth ≈ 9.8 m/s², ratio ≈ 1/6. Common fact in space science.

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Question #2

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The commercial unit of electrical energy is

A. Kilowatt-hour

B. Watt

C. Volt-ampere

D. Joule

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Correct Answer: Option A

Explanation:
kWh used for billing.

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Question #3

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Assertion (A): In a free fall, a heavy object falls faster than a light object. Reason (R): Acceleration due to gravity is same for all objects.

A. A is false, R is true

B. Both A and R true, R not correct explanation

C. Both A and R true, R is correct explanation

D. A is true, R is false

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Correct Answer: Option A

Explanation:
In vacuum, all objects fall at same rate. A is false. R is true. So C correct.

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