Two waves of equal amplitude and frequency interfere each other. The ratio of intensity when the two waves arrive in phase to that when they arrive `90^@` out of phase isA. (a) `1:1`B. (b) `sqrt2:1`C. (c) `2:1`D. (d) `4:1`

Two waves of equal amplitude and frequency interfere each other. The r

1.	Two waves of equal amplitude and frequency interfere each other. The ratio of intensity when the two waves arrive in phase to that when they arrive `90^@` out of phase isA. (a) `1:1`B. (b) `sqrt2:1`C. (c) `2:1`D. (d) `4:1`
Answer» Correct Answer - C Resultant intensity `I=4I_0cos^2(varphi//2)` `impliesI_1/I_2=(cos^2(varphi_1//2))/(cos^2(varphi_2//2))=(cos^20)/(cos^2(90//2))=2/1`

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Two waves of equal amplitude and frequency interfere each other. The ratio of intensity when the two waves arrive in phase to that when they arrive `90^@` out of phase isA. (a) `1:1`B. (b) `sqrt2:1`C. (c) `2:1`D. (d) `4:1`

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