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Consider interference between two source...

Consider interference between two sources of intensity I and 4I. Find out resultant intensity where phase difference is (i). `pi//4`
(ii). `pi`
(iii). `4pi`

Text Solution

Verified by Experts

The correct Answer is:
(i). 7.8I
(ii). I
(iii). 9I
(i). `I_("result")=I+4I+2xxsqrt(I)xxsqrt(4I)cos((pi)/(4))`
`=5I+2sqrt(2)I=7.8I`
(ii). `I_("result")=I+4I+2sqrt(I)xxsqrt(4I)xxcospi=5I-4I=I`
(iii). `I_("result")=I+4I+2sqrt(I)xxsqrt(4I)cos4pi=5I+4I=9I`
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