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:

1kWH = .........J

A) 3.6×10^-8 B) 3.6×10^-6
C) 3.6×10^8 D) 3.6×10^6
 
Answer & Explanation Answer: D) 3.6×10^6

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Q:

A body of mass 18 kg is moving with a velocity of 6 m/s, find its momentum.

A) 108 B) 4.5
C) 54 D) 9
 
Answer & Explanation Answer: A) 108

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Q:

What is the SI unit of temperature?

A) Kelvin B) Joule
C) Celsius D) Fahrenheit
 
Answer & Explanation Answer: A) Kelvin

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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:

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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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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