Which of the following has the highest specific heat capacity? MCQ with Answer and Explanation

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Which of the following has the highest specific heat capacity?

A. Iron

B. Copper

C. Water

D. Lead

Answer: Option C

Solution (By JKExamLibrary)

Water 4200 J/kg°C, used as coolant. Iron ~450, copper ~385, lead ~128.

This question belongs to: Science Physics

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Question #1 Report Error

Escape velocity of a body from Earth is 11.2 km/s. For a planet with mass 9 times Earth and radius same, escape velocity is

A. 11.2 km/s

B. 3.73 km/s

C. 22.4 km/s

D. 33.6 km/s

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Correct Answer: Option D

Explanation:
v_esc ∝ √M. M'=9M => v'=3×11.2=33.6 km/s.

This question belongs to: Science Physics

Question #2 Report Error

The unit of latent heat of fusion is

A. W

B. J/kg

C. J

D. J/°C

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Correct Answer: Option B

Explanation:
Latent heat per unit mass, Q = mL => L = Q/m, unit J/kg (or cal/g). Specific latent heat. Not per degree.

This question belongs to: Science Physics

Question #3 Report Error

SHM acceleration a = -ω²x. Maximum acceleration occurs at:

A. Both positions

B. Mean position

C. Extreme position

D. Neither

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Correct Answer: Option C

Explanation:
a ∝ -x; magnitude maximum when |x| maximum (extremes). At mean position x=0 ⇒ a=0. Velocity maximum at mean position. Memory aid: 'SHM: a max at extremes, v max at center'. Oscillation concept frequently tested in competitive exams to verify SHM characteristics understanding.

This question belongs to: Science Physics

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