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

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

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World Geography
Which among the following statements is/are correct about the stratosphere?The Stratosphere is the layer of the Earth’s atmosphere which lies beyond the mesosphere.It extends up to an altitude of 50 kilometres from the earth’s surface.This layer is ideal for flying aeroplaneSelect the correct code from the options given below:

1, 2 & 3
Only 1 & 2
Only 2 & 3
Only 1

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