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Physics

Physics
Rainbow is seen after rain because of hanging molecules of water which act as

Prisms
Lenses
Mirrors
Slabs

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Physics
Total number of colours exists in sunlight

9
10
7
5

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Physics
Least audible sound for most of the human ear is :

0.005 µ bar
10.0 µ bar
0.0002 µ bar
5.0 µ bar

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Physics
A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

Both reach at the same time
Sphere
Disk
Depends on their masses

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Physics
A black body can absorb radiations of :

All wavelengths
Intermediate wavelengths only
Lower wavelengths only
Higher wavelengths only

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Physics
When hot-water is sprinkled on a hotter glass tumbler, it breaks because

Glass suddenly contracts
Glass suddenly expands
Glass reacts chemically with water
Water evaporates

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MORE MCQ ON Physics

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