the wavelengths of two waves are 50 and 51 cm respectively. If the temperature of the room is 20^(@) C, then what will be the number of beats produced per second by these waves, when the speed of sound at 0^(@) C is 332 m/s ?

the wavelengths of two waves are 50 and 51 cm respectively. If the tem

1.	the wavelengths of two waves are 50 and 51 cm respectively. If the temperature of the room is 20^(@) C, then what will be the number of beats produced per second by these waves, when the speed of sound at 0^(@) C is 332 m/s ?
Answer» 14 10 24 none of these Solution :`(v_(20))/(332) = sqrt((293)/(273))` `v_(0) = 332sqrt((293)/(273)) = 332 xx 1.036 = 344 ms^(-1)` `n_(1) = (344 xx 100)/(50) = 688` HZ. `n_(2) = (344 xx 100)/(51) = 674 ` Hz. `therefore` No. of beats /sec = 688 - 674 = 14. correct choice is (a) .

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the wavelengths of two waves are 50 and 51 cm respectively. If the temperature of the room is 20^(@) C, then what will be the number of beats produced per second by these waves, when the speed of sound at 0^(@) C is 332 m/s ?

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