Physics Questions

Q:

The sliding friction is _______________ than the static friction.

A) double B) same
C) greater D) smaller
 
Answer & Explanation Answer: D) smaller

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Q:

Find the acceleration (in m/s2) of a body which accelerates from 10 m/s to 20 m/s in 4 seconds.

A) 7.5 B) 15
C) 5 D) 2.5
 
Answer & Explanation Answer: D) 2.5

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Q:

To convert temperature from Celcius to Kelvin scale, you must ___ the given temperature.

A) subtract 273 B) multiply 273
C) add 273 D) divide by 273
 
Answer & Explanation Answer: C) add 273

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Q:

The force which makes a vehicle to stop when break is applied is called

A) gravitational force B) vander­walls force
C) frictional force D) co­valant force
 
Answer & Explanation Answer: C) frictional force

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Q:

___________________states that the induced e.m.f. is directly proportional to the rate of change of magnetic flux linkage or rate of cutting of magnetic flux
linkage.

A) Lenz's Law B) Hooke's Law
C) Ohm's Law D) Faraday's Law
 
Answer & Explanation Answer: D) Faraday's Law

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Q:

Which of the following waves cannot be polarised?

A) Radio B) Ultra violet
C) Infrared D) Ultrasonic
 
Answer & Explanation Answer: D) Ultrasonic

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Q:

Which of the following instrument is used to measure Soil Water Tension?

A) Photometer B) Pyrometer
C) Psychrometer D) Tensiometer
 
Answer & Explanation Answer: D) Tensiometer

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Q:

Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s

A) 2000 B) 0.016
C) 1000 D) 0.008
 
Answer & Explanation Answer: D) 0.008

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