A) \[\frac{12}{40\times 50}\]
B) \[\frac{40\times 50}{12}\]
C) \[\frac{40\times 2\times 50}{12}\]
D) \[\frac{40\times 2\times 12}{50}\]
Correct Answer: C
Solution :
Speed \[\text{=}\frac{\text{Total distance}}{\text{Total time taken}}\] ...(i) Number of times he bangs two pieces of wood = 50 Total distance \[=(40\times 2\times 50)\text{ }m\] Total time taken = 12 s \[\therefore \]Speed of sound in air\[=\frac{40\times 2\times 50}{12}\]You need to login to perform this action.
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