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 Physics Questions

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Q:

An object having a capability to do work is said to possess __________.

A) force B) moment
C) momentum D) energy
 
Answer & Explanation Answer: D) energy

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3 1886
Q:

The distance-time graph for the motion of an object moving with a constant speed is a __________.

A) Dot B) Circle
C) Straight Line D) Curve
 
Answer & Explanation Answer: C) Straight Line

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0 1884
Q:

Fundamental duties are included in the Indian Constitution by the_________Amendment.

A) 44th B) 42nd
C) 26th D) 25th
 
Answer & Explanation Answer: B) 42nd

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1 1881
Q:

If the force applied on the object is in the direction opposite to the direction of motion, the speed of the object __________.

A) increases B) stops
C) decreases D) no effect
 
Answer & Explanation Answer: C) decreases

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0 1880
Q:

Which one of the following statements with regard   to   Jet   stream,   an   upper   level tropospheric wave, is not correct?

A) It is narrow band of high-velocity wind. B) It   follows   the   wave   path   near   the tropopause at elevations of 8 km to 15 km.
C) Jet  streams  are typically  continuous over long distances. D) In summer, the polar front jet achieves its maximum force.
 
Answer & Explanation Answer: B) It   follows   the   wave   path   near   the tropopause at elevations of 8 km to 15 km.

Explanation:

All  are  correct  except  D,  as  Jet streams  are  phenomena  of  winter. It   is   believed   that   jet   stream exercises  an  important  influence on the winter weather in India.

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1 1878
Q:

Which phenomena shows the particle nature of light?

A) Diffraction B) Interference
C) Photoelectric effect D) Polarisation
 
Answer & Explanation Answer: C) Photoelectric effect

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1 1876
Q:

What is the power rating (in W) of a bulb if a current of 0.3 A passes through on application of 240 V of potential difference across its terminals?

A) 800 B) 36
C) 400 D) 72
 
Answer & Explanation Answer: D) 72

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0 1876
Q:

Which rays cause skin damage?

A) X­-Rays B) UV Rays
C) Infra red rays D) Yellow Rays
 
Answer & Explanation Answer: B) UV Rays

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0 1871