InterviewSolution
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InterviewSolution
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The electric vector vibration of an electromagnetic wave is given by `E = (50NC^(-1)) sin omega(t-(x)/(c))`, The intensity of the wave isA. `2.3 Wm^(-2)`B. `4.3 Wm^(-2)`C. `3.3 Wm^(-2)`D. `1.8 Wm^(-2)` |
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Answer» Correct Answer - C The intensity is, `I = 1/1 epsi_(0)E_(0)^(2)c` `= 1/2 (8.85 xx 10^(-12)N-m^(2)C^(-2))xx (50 NC^(-1))^(2) xx 3 xx 10^(8)ms^(-1)` `=3.3 wm^(-2)` |
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