Physics Questions

Q:

Find the power of a convex lens if the image formed is at a distance of 10 cm from the lens when the object is placed on the other side of the lens at 40 cm from the optical centre?

A) 12.5 diopters B) 7.5 diopters
C) -12.5 diopters D) -7.5 diopters
 
Answer & Explanation Answer: A) 12.5 diopters

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Q:

Momentum is measured as the product of :

A) Mass and inertia B) Mass and force
C) Mass and velocity D) Mass and acceleration
 
Answer & Explanation Answer: C) Mass and velocity

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Q:

During _____________ motion of an object along a straight line, the velocity remains constant with time.

A) linear B) translational
C) uniform D) equilibrium
 
Answer & Explanation Answer: C) uniform

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Q:

As per Newton's law of gravitation, the force between two bodies is ________.

A) directly proportional to the product of their masses B) directly proportional to the distance between them
C) directly proportional to the product of their radius D) directly proportional to the product of forces
 
Answer & Explanation Answer: A) directly proportional to the product of their masses

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Q:

If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?

A) 0 m/s B) 4.9 m/s
C) 14.7 m/s D) 20 m/s
 
Answer & Explanation Answer: A) 0 m/s

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Q:

Soap bubble attains spherical shape due to ______.

A) inertia B) pressure
C) surface tension D) Viscosity
 
Answer & Explanation Answer: C) surface tension

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Q:

Nautical miles is a unit of distance used in

A) Navigation B) Road mile
C) Astronomy D) Measuring the boundaries of a nation
 
Answer & Explanation Answer: A) Navigation

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Q:

Sound is a form of ____________ which produces a sensation of hearing in our ears.

A) power B) energy
C) force D) momentum
 
Answer & Explanation Answer: B) energy

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