A RADAR sends a signal to an aeroplane at a distance 300 km away- with a speed of 3- 108-m-s-1- After how much time is the signal received back after reflecting from the aeroplane-

Total distance travelled by the aeroplane =2 × 300km =600 km =600000m given speed of light = 3× 10^8 m s^ 1. hence time taken = ...

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A RADAR sends...

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A RADAR sends a signal to an aeroplane at a distance 300 km away, with a speed of $3 \times 10^{8} m s^{- 1}$ . After how much time is the signal received back after reflecting from the aeroplane?

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3 \times 10^{8} m s^{- 1}

A radar sends a signal to an aeroplane at a distance 45 km away with a speed of 3 x 10⁸ m/s.

The time interval after which the signal will be received back from the Aeroplane is:

30 k m

2 \times 10^{- 4}

3 \times 108 m s^{- 1}

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