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A vibrating tuning fork generates a wave given by y = 0.1 sin pi (0.1 x- 2t) , Where x and y are in metre and t is in second. The distance travelled by the wave while the fork completes 30 vibrations is : |
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Answer» 600 m COMPARING it with y = R sin `(kx - omega t)`. `rArr "" k = 0.1 pi and omega= 2pi ` `(2pi)/(lambda) = 0.1 pi "" rArr "" lambda ` = 20 m, `therefore` DISTANCE travelled by wave when TUNNING fork completes 30 vibrations = 30 `lambda` = 600 m Correct choice is a. |
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