The value of cot (7pi)/(16)+2cot (3pi)/(8)+cot (15 pi)/(16) -Turito

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General

Easy

Maths-

The value of $cot space fraction numerator 7 pi over denominator 16 end fraction plus 2 cot space fraction numerator 3 pi over denominator 8 end fraction plus cot space fraction numerator 15 pi over denominator 16 end fraction$ is

Maths-General

4
2
-2
-4

Answer:The correct answer is: -4

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A long cylindrical tube carries a highly polished piston and has a side opening. A tuning fork of frequency n is sounded at the sound heard by the listener charges if the piston is moves in or out. At a particular position of the piston is moved through a distance of 9 cm, the intensity of sound becomes minimum, if the speed of sound is 360 m/s, the value of n is

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Or
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physics-General

When piston moves a distance

x subscript 1 end subscript

, path difference change by 2 xs.

therefore

the path difference between maxima and consecutive minima=

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Or
λ=4x=4×9 cm=36cm=0.36m

n equals fraction numerator v over denominator lambda end fraction equals fraction numerator 360 over denominator 0.36 end fraction equals 1000 blank H z

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