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Two waves having the intensities in the ratio of `9 : 1` produce interference. The ratio of maximum to minimum intensity is equal to

A

`10:8`

B

`2:1`

C

`9:1`

D

`4:1`

Text Solution

Verified by Experts

The correct Answer is:
D
`Iprop(amp)^(2)" "therefore ` amplitudes are in the ratio 3:1.
`therefore`maximum amplitude=`3+1=4and`
minimum amplitude`=3-1=2`
`therefore (I_(max))/(I_("min"))=(4^(2))/(2^(2))=4:1`
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Knowledge Check

  • Two waves having intensities in the ratio of 16:1 produce interference. The ratio of maxium to minimum intensities is equal to

    A
    `10:8`
    B
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