Q1. An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is
Q5. Large astronomical telescopes always use as objective
Q6. Identify the vector quantity from the following
Q8. Stars which appear single to the naked eye but are double when seen through a telescope are

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