A fighter jet plane ‘F’ and a submarine ‘S’ are directly heading towards free surface of sea as shown in figure. Both the plane and the submarine starts sending high ultra sonic compression pulses towards each other.

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

The transmitted pulse in air will be a compression pulse

The reflected pulse in air will be a rarefaction pulse

The transmitted pulse in water will be a compression pulse

The reflected pulse in water will be a compression pulse

answer is A, B, C, D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Speed of sound is maximum in water, hence water is rarer medium for sound waves w.r.t. air.

Longitudinal pressure waves suffer no change in phase from rigid end i.e. compression pulse reflects as compression pulse. On the other hand if longitudinal pressure wave reflects from free end, it suffer a phase change of π i.e. compression reflects as rarefaction and vice-versa.

No phase change happens during transmission.

Watch 3-min video & get full concept clarity