When sound is produced in an airplane moving with a velocity of 250 m/s horizontally, its echo is heard after 12 sec. If velocity of sound in air is 300 ms^-1, then the elevation of the aircraft is.

Question:

Options :

(a) 2500 m
(b) 758 m
(c) 995 m
(d) 1950 m

Answer :

Answer Steps :

step 1

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step 3

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An alternating voltage source is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is:

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