0°C on Fahrenheit scale is MCQ with Answer and Explanation

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0°C on Fahrenheit scale is

A. 0°F

B. 32°F

C. 180°F

D. 212°F

Answer: Option B

Solution (By JKSSB Mock Tests)

Freezing point 0°C = 32°F.

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Question #1

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The centre of mass of a uniform semicircular ring of radius R lies at distance from centre

A. R/2

B. 2R/π

C. R/3

D. R/π

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Correct Answer: Option B

Explanation:
For semicircular ring, y_cm = 2R/π from centre.

This question belongs to: Science Physics

Question #2

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A wire of resistance 9 Ω is bent to form an equilateral triangle. The resistance across any two vertices is

A. 2 Ω

B. 9 Ω

C. 6 Ω

D. 3 Ω

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Correct Answer: Option A

Explanation:
Total 9 Ω, each side 3 Ω. Across two vertices, one side is 3 Ω in parallel with series of two sides (3+3=6 Ω). Equivalent: (3×6)/(3+6) = 18/9 = 2 Ω. Triangle resistance network.

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Question #3

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The unit of mutual inductance is

A. Farad

B. Henry

C. Weber

D. Tesla

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Correct Answer: Option B

Explanation:
Mutual inductance M = emf/(di/dt), unit Henry.

This question belongs to: Science Physics

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