Physics Questions

Q:

What will be the resistance of a wire across which, when 2V potential difference is applied, 1A current flows through the wire?

A) 2 ohms B) 0.02 ohms
C) 0.5 ohms D) 20 ohms
 
Answer & Explanation Answer: A) 2 ohms

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Q:

If the distance travelled by an object is zero, then the displacement of the object

A) is zero B) is negative
C) is positive D) may or may not be zero
 
Answer & Explanation Answer: A) is zero

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Q:

An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process?

A) 400 J B) 50 J
C) 40 J D) 100 J
 
Answer & Explanation Answer: A) 400 J

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Q:

The ____ of a substance is defined as the mass per unit volume.

A) density B) viscosity
C) porosity D) luminosity
 
Answer & Explanation Answer: A) density

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Q:

The kinetic energy of a ball weighing 0.5 kg moving with a velocity of 4 m/s will be

A) 16 J B) 4 J
C) 8 J D) 12 J
 
Answer & Explanation Answer: B) 4 J

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Q:

Which of the following can do more work?

A) A rotating wheel B) A moving bullet
C) A speeding stone D) A raised hammer
 
Answer & Explanation Answer: B) A moving bullet

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Q:

If the initial velocity of a car is 5 m/s, and the final velocity is 10 m/s in 5s, then the acceleration is ___.

A) 10 m/s2 B) 0.1 m/s2
C) 1 m/s2 D) 5 m/s2
 
Answer & Explanation Answer: C) 1 m/s2

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Q:

If two coulomb of charge flows through any cross-section of a conductor in one second, what will be the current flowing through it?

A) 1 Ampere B) 1/2 Ampere
C) 1/4 Ampere D) 2 Amperes
 
Answer & Explanation Answer: D) 2 Amperes

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