Physics
Which of the following is not a transverse wave?

Sound waves
Radio waves
All listed here
Light waves

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Physics
Solids have definite shapes.This is because

The forces of adhesion are less
The forces of cohesion are very large
The forces of cohesion of the molecules within are very much less in them
The forces of adhesion are large

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Physics
What is the principle of a ''Life Jacket"?

It provides oxygen to a drowning person
It decreases the volume of the person to keep him afloat
The person can sit on it like a raft
It increases the volume of the person to keep him afloat

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