World Geography
The unit of the light year is used for measuring

speed of satellites
speed of ships
speed of rockets
distance between bodies in the universe

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World Geography
Which among the following statements is not correct about Plunge pool?

They are often very deep, generally related to the height of fall and the volume of water,
It is a deep depression in a stream bed at the base of a waterfall
They occur at the mature stage of the river development
It is created by the erosional forces of cascading water

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