Physics Questions

Q:

Which one of the following processes is responsible for the glittering of air bubble rising through water?

A) Reflection of light B) Refraction of light
C) Total internal reflection of light D) Scattering of light
 
Answer & Explanation Answer: C) Total internal reflection of light

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1 1959
Q:

Alternate freezing and thawing often leads to ______.

A) Creep B) Slumps
C) Mud flows D) Earth flows
 
Answer & Explanation Answer: A) Creep

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Exam Prep: Bank Exams

2 1958
Q:

An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of :

A) 275 J B) 110 J
C) 2750 J D) 110 J
 
Answer & Explanation Answer: A) 275 J

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1 1954
Q:

When light passes from one medium to another, this phenomenon of change in its direction is called _____.

A) Refraction B) Diffraction
C) Propagation D) No option is correct
 
Answer & Explanation Answer: A) Refraction

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3 1954
Q:

Anemometer is an instrument meant for measuring __________

A) velocity B) air masses
C) wind speed D) temperature
 
Answer & Explanation Answer: C) wind speed

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0 1952
Q:

Why does water tank appear shallower when viewed from the top?

A) Due to reflection B) Due to refraction
C) Due to diffraction D) Due to total internal reflection
 
Answer & Explanation Answer: B) Due to refraction

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0 1950
Q:

Electrical Energy is the energy of

A) Protons B) Neutrons
C) Electrons D) All the above
 
Answer & Explanation Answer: C) Electrons

Explanation:

We know that Kinetic energy is the energy of a moving object and in the same way Electrical energy is the form of kinetic energy caused by moving electric charges called electrons.

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1 1947
Q:

What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

A) 50 B) 12
C) 24 D) 36
 
Answer & Explanation Answer: B) 12

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0 1946