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Physics

Physics
The damage of the human body due to radiation (X-rays or grays etc,) is measured in :

Rads
Curie
Roentgen
Rems

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Physics
An electric iron of 750 W is used for S hours per day. Then the energy consumed in one day by the iron is:

60 units
600 units
0.6 units
6 units

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Physics
The boiling point of water decreases at higher altitudes is due to

Low atmospheric pressure
High temprature
High atmospheric pressure
Low temperature

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Physics
Every hot object emits ________

X–rays
Ultraviolet rays
Visible light
Infrared rays

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Physics
The value of coefficient of restitution in perfectly elastic collision is

0.5
1
2

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Physics
Which of these is true of all simple machines?

These make work easier
Both A & B
Work input > work output
None of these

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MORE MCQ ON Physics

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