A person drops a stone in a well of depth 80 m and hears the sound of the splash after 4-25 seconds- If the acceleration due to gravity is 10 ms ndash-2- find the velocity of sound in air-Kindly do not give any link or hint for the question-

Dear student time #160;taken #160;by #160;stone #160;to #160;hit #160;the #160;water #160;surface #160;is #160;x=12gt280=12 #215;10 #21 ...

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Standard XII

Physics

Revisiting Waves

A person drop...

Question

A person drops a stone in a well of depth 80 m and hears the sound of the splash after 4.25 seconds. If the acceleration due to gravity is 10 ms^–2, find the velocity of sound in air.
Kindly do not give any link or hint for the question.

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Solution

Dear student

$t i m e t a k e n b y s t o n e t o h i t t h e w a t e r s u r f a c e i s x = \frac{1}{2} g t^{2} 80 = \frac{1}{2} \times 10 \times t^{2} 80 = 5 \times t^{2} t^{2} = \frac{80}{5} = 16 t = 4 s e c r e m a i n i n g t i m e = (4.25 - 4) = 0.25 s e c s o s o u n d s h o u l d t r a v e l 80 m i n a t i m e o f 0.25 s e c v e l o c i t y o f s o u n d i s v = \frac{80}{0.25} = 320 m / s R e g a r d s$

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A person drops a stone in a well of depth 80 m and hears the sound of the splash after 4.25 seconds. If the acceleration due to gravity is 10 ms–2, find the velocity of sound in air.Kindly do not give any link or hint for the question.

Dear student time taken by stone to hit the water surface is x=12gt280=12×10×t280=5×t2t2=805=16t=4secremaining time =(4.25-4)=0.25secso sound should travel 80m in a time of 0.25secvelocity of sound isv=800.25=320m/sRegards

A person drops a stone in a well of depth 80 m and hears the sound of the splash after 4.25 seconds. If the acceleration due to gravity is 10 ms^–2, find the velocity of sound in air.
Kindly do not give any link or hint for the question.