Physics Questions

Q:

Why does a cannon recoil after firing ?

A) Conservation of energy B) Backward thrust of gases produced
C) Newton's third law of motion D) Newton's first law of motion
 
Answer & Explanation Answer: C) Newton's third law of motion

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Q:

The energy obtained from atoms is known as.........

A) Solar energy B) Heat energy
C) Nuclear energy D) Chemical energy
 
Answer & Explanation Answer: C) Nuclear energy

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Q:

The antiparticle of an electron is

A) Positron B) Proton
C) Alpha particles D) Beta particles
 
Answer & Explanation Answer: A) Positron

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Q:

If a body is moving on a circular path, what is its average velocity if it completes one cycle in one second?

A) Average velocity depends upon time taken to complete one cycle B) One
C) Average velocity is same as average speed D) Zero
 
Answer & Explanation Answer: D) Zero

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Q:

Which one of the following is the correct sequence of passage of light in a compound microscope?

A) Condenser -Objective lens -Eye -piece -Body tube B) Objective lens -Condenser -Body tube -Eye piece
C) Condenser -Objective lens -Body tube -Eyepiece D) Eyepiece -Objective lens -Body tube -Mirror
 
Answer & Explanation Answer: C) Condenser -Objective lens -Body tube -Eyepiece

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Q:

In a _________ the wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation

A) longitudinal B) rolling
C) transverse D) field
 
Answer & Explanation Answer: C) transverse

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Q:

Where is a transistor most likely to be found ?

A) Wrist watch B) Fuse
C) Hearing aid D) Fluorescent lamp
 
Answer & Explanation Answer: C) Hearing aid

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Q:

Which of the following cannot be used for making lenses?

A) Plastic B) Soil
C) Glass D) Water
 
Answer & Explanation Answer: B) Soil

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