For transverse wave on a string

Column I

Column II
i) If amplitude increases a) Maximum instantaneous power increases
ii) If frequency increases b) Average power increases
iii) If amplitude decreases c) Maximum instantaneous power decreases
iv) If frequency decreases d) Average power decreases

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$i \to a, ii \to b,iii \to c,iv-d$

$i \to a, b,ii \to a, b, i i i - c, d, iv \to c,d$

$i \to b, ii \to a,iii \to c,iv \to d$

None of above

answer is B.

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Detailed Solution

power $α f^{2} A^{2}$

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	Column I		Column II
i)	If amplitude increases	a)	Maximum instantaneous power increases
ii)	If frequency increases	b)	Average power increases
iii)	If amplitude decreases	c)	Maximum instantaneous power decreases
iv)	If frequency decreases	d)	Average power decreases