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Learn Physics MCQs [Page 4 ]

H

Harikesh • 8K Points
Tutor III

`Q) The electric motor converts`

(A) Electrical energy into mechanical energy
(B) Mechanical energy into electrical energy
(C) Electrical energy into light energy
(D) None of these

No Explanation found. Add Explanation and get +2 points.

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Harikesh • 8K Points
Tutor III

`Q) If a lift is going up with acceleration, the apparent weight of a body is`

(A) More or less the true weight
(B) Equal to the true weight
(C) Less than the true weight
(D) More than the true weight

No Explanation found. Add Explanation and get +2 points.

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H

Harikesh • 8K Points
Tutor III

`Q) What is the scale used for measuring the intensity of the earthquake?`

(A) Metric Scale
(B) Quake Scale
(C) Richter Scale
(D) Epicentre Scale

No Explanation found. Add Explanation and get +2 points.

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H

Harikesh • 8K Points
Tutor III

`Q) A jet engine works on the principle of conservation of`

(A) Linear momentum
(B) Angular momentum
(C) Energy Mass
(D) Mass Velocity

No Explanation found. Add Explanation and get +2 points.

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H

Harikesh • 8K Points
Tutor III

`Q) Bolometer is used to measure`

(A) Frequency
(B) Temperature
(C) Velocity
(D) Wavelength

No Explanation found. Add Explanation and get +2 points.

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M

Mr. Dubey • 51.17K Points
Coach

`Q) Which of the following terms is not used in the field of physics?`

(A) Latent heat
(B) Nuclear fusion
(C) Refractive index
(D) Stock value

No Explanation found. Add Explanation and get +2 points.

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Mr. Dubey • 51.17K Points
Coach

`Q) Radiocarbon is produced in the atmosphere as a result of`

(A) Collision between fast neutrons and nitrogen nuclei present in the atmosphere.
(B) Action of ultraviolet light from the sun on atmospheric oxygen.
(C) Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.
(D) Lightning discharge in atmosphere.

Explanation:
Radiocarbon is produced in the atmosphere as result of collision between fast neutrons and nitrogen nuclei present in the atmosphere.

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Mr. Dubey • 51.17K Points
Coach

`Q) It is easier to roll a stone up a sloping road than to lift it vertical upwards because`

(A) Work done in rolling is more than in lifting.
(B) Work done in lifting the stone is equal to rolling it.
(C) Work done in both is same but the rate of doing work is less in rolling.
(D) Work done in rolling a stone is less than in lifting it.

No Explanation found. Add Explanation and get +2 points.

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Mr. Dubey • 51.17K Points
Coach

`Q) The absorption of ink by blotting paper involves:`

(A) Viscosity of ink
(B) Capillary action phenomenon
(C) Diffusion of ink through the blotting
(D) Siphon action

Explanation:
The absorption of ink by blotting paper involves capillary action phenomenon because the blotting paper is a thin and a smooth paper which allows a little thicker liquids like ink to absorb.

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Mr. Dubey • 51.17K Points
Coach

`Q) Siphon will fail to work if:`

(A) The densities of the liquid in the two vessels are equal.
(B) The level of the liquid in the two vessels are at the same height.
(C) Both its limbs are of unequal length.
(D) The temperature of the liquids in the two vessels are the same.

Explanation:
Siphon is a tube bent to form two legs of unequal length by which a liquid can be transferred from a reservoir and then down to a lower level of it. Siphon will fail to work if, the level of the liquid in the two vessels are at the same height.

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