7.
What is meant by independent
Independent behaviour of waves?

Its AnsweredHere it is

A wave  preserve its individuality while travelling through space.So when a Number of waves travel through a region at same time, each wave travels independently of the others i.e., as if all other waves were absent. That is why, with so many different musical instrument playing simultaneously in a full orchestra , we can still identify the note produced by an individual instrument. An important consequence of the independent behaviour of the Waves is the principle of superposition of waves.

Explanation:

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

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the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.