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 Physics Questions

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Q:

Acceleration is

A) Inversely proportional to force B) Inversely proportional to mass
C) Directly proportional to mass D) Directly proportional to force
 
Answer & Explanation Answer: D) Directly proportional to force

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Q:

The second equation of motion gives the relation between

A) Velocity and time B) Position and velocity
C) Position and time D) Velocity and acceleration
 
Answer & Explanation Answer: C) Position and time

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Q:

For what is Mohs scale used?

A) To measure brightness of a substance B) To measure viscosity of a liquid
C) To measure elasticity of a material D) To measure hardness of minerals
 
Answer & Explanation Answer: D) To measure hardness of minerals

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Q:

Which object converts electricity to light?

A) Solar panels B) Battery
C) Bulb D) All the above
 
Answer & Explanation Answer: C) Bulb

Explanation:

Bulb converts electricity to light whereas solar panel is the device which converts light to electricity.

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Q:

Two identical resistors, each of 10 ohm, are connected in parallel. This combination, in turn, is connected to a third resistor of 10 ohm. The equivalent resistance of the combination is ___.

A) 30 ohm B) 5 ohm
C) 15 ohm D) 10 ohm
 
Answer & Explanation Answer: C) 15 ohm

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Q:

Mechanical energy is the sum of

A) kinetic energy + heat energy B) kinetic energy + potential energy
C) potential energy + heat energy D) chemical energy + electrical energy
 
Answer & Explanation Answer: B) kinetic energy + potential energy

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Q:

The speed of the light is maximum in

A) Air B) Vacuum
C) Water D) Glass
 
Answer & Explanation Answer: B) Vacuum

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Q:

Which among the following is not an environment friendly mode of producing electricity?

A) Thermal Power B) Solar Power
C) Wind Energy D) Bio-waste
 
Answer & Explanation Answer: A) Thermal Power

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