Physics - Mock Test 43

Question 421

S.I unit of frequency is?

A) vibration S-2 B) radian C) hertz D) ms-1

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Question 422

The waveform of S.H.M. is?

A) standing wave B) sine wave C) square wave D) none

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Question 423

In vibratory motion?

A) P.E. remains constant B) K.E. remain constant C) total energy remain constant D) total momentum remain constant

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Question 424

Biomass can be converted into fuels by?

A) direct combustion B) fermentation C) both 1⃣ and 2⃣ D) none of these

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Question 425

________________ cells converts solar energy into electrical energy?

A) rotory B) photovoltaic C) galvanic D) non of these

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Question 426

Geothermal energy is a ____________________ source of energy?

A) non-renewable B) stable C) renewable D) none of the above

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Question 427

The dot product of force and velocity is?

A) power B) work C) impulse D) torque

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Question 428

Propulsion force of a rocket is?

A) non-conservative force B) conservative force C) both 1⃣ and 2⃣ D) non of these

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Question 429

The dimension of power is?

A) [ML2T-3] B) [ML2T-2] C) [ML2T3] D) none of these

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Question 430

The area under the force displacement graph represents?

A) area B) work done C) power D) none of these

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