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Physics

Showing 11-20 of 50 results

1. Which device convert optical energy into electrical energy?

(A) Dynamo
(B) Electric bulb
(C) Photoelectric cell
(D) None of these
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2. The photoelectric effect is based on the law of conservation of

(A) Energy
(B) Mass
(C) Momentum
(D) Angular momentum

3. Joule is the unit of

(A) temperature
(B) pressure
(C) energy
(D) potential electric

4. Where is the headquarters of International Atomic Energy Agency?

(A) Vienna
(B) Hague
(C) Geneva
(D) None of these

5. Energy generation in stars is mainly due to

(A) Fusion of lighter nuclei
(B) Chemical reaction
(C) Fission reaction
(D) None of these
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6. Which device converts electrical energy into mechanical energy?

(A) Electric motor
(B) Galvanometer
(C) Ammeter
(D) Dynamo
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7. A device used to convert electrical energy in to mechanical energy

(A) Dynamo
(B) Generator
(C) Electric motor
(D) None of these
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8. A transfomer

(A) transforms energy
(B) increase or decrease voltage
(C) transforms frequency
(D) generates e.m.f
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9. Conversion of heat into electrical energy can be achieved by

(A) Transistor
(B) Thermocouple
(C) Voltmeter
(D) Dynamo
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10. India’s first wave energy project is being set up at

(A) Mangalore
(B) Rameswaram
(C) Mumbai
(D) Vizhinjam
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