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 Physics Questions

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Q:

Rate at which velocity changes over time?

A) Speed B) Displacement
C) Acceleration D) Jerk
 
Answer & Explanation Answer: C) Acceleration

Explanation:

Acceleration is nothing but the rate at which velocity changes over time.

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7 1921
Q:

If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is

A) 0.2 J B) 5 J
C) 20 J D) 500 J
 
Answer & Explanation Answer: D) 500 J

Explanation:
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3 1920
Q:

Gravitational force is maximum at which place

A) Poles B) Tropic of cancer
C) Tropic of capricorn D) Equator
 
Answer & Explanation Answer: A) Poles

Explanation:

Gravitational force is the force that binds everything at the surface of the earth. Gravitational force is maximum at Poles.

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5 1918
Q:

AV= constant, where A= area of cross-section and V= velocity of fluid. This equation is called _____.

A) Equation of discontinuity B) Equation of continuity
C) Equation of sustenance D) Equation of parallelism
 
Answer & Explanation Answer: B) Equation of continuity

Explanation:
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1 1917
Q:

Upward force on a floating body is called _______.

A) jerk B) buoyancy
C) Archimedal force D) Anti-gravity
 
Answer & Explanation Answer: B) buoyancy

Explanation:
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1 1914
Q:

Motion of a train is an example of ______.

A) Rotatory motion B) Spin motion
C) Projectile motion D) Translatory motion
 
Answer & Explanation Answer: D) Translatory motion

Explanation:
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2 1914
Q:

Electric power is measured in units of

A) Volt B) Joule
C) Watt D) Ampere
 
Answer & Explanation Answer: C) Watt

Explanation:

Electric power is the rate per unit time, at which electrical energy is transferred by an electric circuit. The power of electricity is measured in watts and kilo watts.

1 Watt is the unit of electrical power equal to one ampere under the pressure of one volt.

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6 1913
Q:

Calculate the time period (in seconds) of a sound wave of wavelength 2m travelling with a speed of 250 m/s.

A) 500 B) 0.008
C) 0.016 D) 250
 
Answer & Explanation Answer: B) 0.008

Explanation:
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2 1913