Physics Questions

Q:

What is the Centre of Curvature of a spherical mirror?

A) It is the centre of a hollow sphere of which the spherical mirror is a part B) It is the midpoint of a spherical mirror
C) It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection D) It is a point from which the rays of light appear to be coming from on the principal axis of a convex mirror
 
Answer & Explanation Answer: A) It is the centre of a hollow sphere of which the spherical mirror is a part

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Q:

One Watt = ?

A) 1 Joule/sec B) 1 erg/sec
C) 1 Pascal/sec D) 1 m/s
 
Answer & Explanation Answer: A) 1 Joule/sec

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Q:

___ is not related to gases.

A) Boyle's Law B) Joule's Law
C) Avogadro's Law D) Charle's Law
 
Answer & Explanation Answer: B) Joule's Law

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Q:

Mechanical energy is equal to

A) Kinetic energy + Chemical energy B) Kinetic energy + Potential energy
C) Kinetic energy + Heat energy D) Kinetic energy + Electrical energy
 
Answer & Explanation Answer: B) Kinetic energy + Potential energy

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Q:

The centre of the reflecting surface of a spherical mirror is called the

A) radius B) centre of curvature
C) pole D) focus
 
Answer & Explanation Answer: C) pole

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Q:

Sound CANNOT travel through

A) Air B) Vacuum
C) Liquid D) Solid
 
Answer & Explanation Answer: B) Vacuum

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Q:

A particle experiences constant acceleration for 20 s after starting from rest. If it travels a distance X1, in the first 10 s and distance X2 in the remaining 10 s, then which of the following is true?

 

A) X2 = 2X1 B) X1 = 3X2
C) X2 = X1 D) X2 = 3X1
 
Answer & Explanation Answer: D) X2 = 3X1

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Q:

A charge of 2 C passes from one point to the other in a circuit. If the potential difference between the two points is 5 V, the amount of work done is

A) 5 J B) 10 J
C) 2.5 J D) 0.4 J
 
Answer & Explanation Answer: B) 10 J

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