Two sources of sound S1 and S2 produce sound waves of same frequency xHZ. A listener is moving from source S1 towards S2 with a constant speed 2.5m/s and he hear 10 beats/s.The velocity of sound is 300m/s. Then x=?
210Hz
120Hz
400Hz
600Hz
Study 40% syllabus and score up to 100% marks in JEE