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 Physics Questions

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Q:

Rate of change of momentum is

A) Area B) Pressure
C) Force D) Velocity
 
Answer & Explanation Answer: C) Force

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1 2193
Q:

Which electromagnetic wave has the highest frequency?

A) Gamma Rays B) Radio waves
C) X rays D) Microwaves
 
Answer & Explanation Answer: A) Gamma Rays

Explanation:

In all Electromagnetic waves, Gamma Rays have the highest frequency and the lowest wavelength. Whereas Radio ways have lowest Frequency and the highest wavelength. 

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0 2190
Q:

Instrument for measuring wind velocity is called

A) Coulombmeter B) Anemometer
C) Cyanometer D) Chronometer
 
Answer & Explanation Answer: B) Anemometer

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Q:

Which among the following is a vector quantity?

A) Heat B) Angular momentum
C) Work D) Time
 
Answer & Explanation Answer: B) Angular momentum

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Q:

The frictional force exerted by fluids is also called ________.

A) drag B) buoyancy
C) upthrust D) convection
 
Answer & Explanation Answer: A) drag

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3 2177
Q:

If electric resistance is to be decreased, then the number of resistances should be connected in ________________

A) Series B) Parallel
C) Mixed arrangement D) None of these
 
Answer & Explanation Answer: B) Parallel

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0 2175
Q:

The washing machine works on the principle of ____________

A) Dialysis B) Diffusion
C) Reverse osmosis D) Centrifugation
 
Answer & Explanation Answer: D) Centrifugation

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1 2167
Q:

If an electron and a photon have the same wavelength, then they will have the same

A) velocity B) linear momentum
C) angular momentum D) energy
 
Answer & Explanation Answer: B) linear momentum

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