A -RADAR- is able to detect the reflected waves from an enemy airplane aftera time interval of 3 - 10-4 seconds- If the velocity of the wave is 3 x 10- 8 ms -1- calculate the distance of airplane from the radar-

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Byju's Answer

Standard IX

Physics

Sonar and Radar

A 'RADAR' is ...

Question

A ‘RADAR’ is able to detect the reflected waves from an enemy airplane aftera time interval of 3 x 10^-4 seconds. If the velocity of the wave is 3 x 10^8ms-1,calculate the distance of airplane from the radar.

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Solution

velocity =310^8
time =310^-4
distance = velocity time
=33*10^-4 10^8 = 910^4 m
=90km

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A ‘RADAR’ is able to detect the reflected waves from an enemy airplane aftera time interval of 3 x 10^-4 seconds. If the velocity of the wave is 3 x 10^8ms-1,calculate the distance of airplane from the radar.

velocity =3*10^8 time =3*10^-4 distance = velocity *time =3*3*10^-4 *10^8 = 9*10^4 m =90km

velocity =310^8
time =310^-4
distance = velocity time
=33*10^-4 10^8 = 910^4 m
=90km