Sawaal
3
Q:

Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water 

A) increases to a great extent B) increases slightly
C) decreases slightly D) decreases rapidly

Answer:   C) decreases slightly



Explanation:

Evaporation causing cooling.Here the evaporation is less. Therefore cooling is less.

Subject: Physics
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An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is

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1 watt is equal to 1 ____________

 

A) J s-1   B) J s
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Answer & Explanation Answer: A) J s-1  

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A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds.

 

A)  25 B)  37.5
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Answer & Explanation Answer: D)  75

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