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In the question number 66, the flux thro...

In the question number 66, the flux through the same square if the line normal to its plane makes a `60^(@)` angle with the x-axis is

A

`30NC^(-1)m^(2)`

B

`10NC^(-1)m^(2)`

C

`20NC^(-1)m^(2)`

D

`25NC^(-1)m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
When normal to the plane makes an angle of `60^(@)` with x-axis, then `theta=60^(@)`
`phi=Escostheta=2xx10^(3)xx10^(-2)cos60^(@)=10NC^(-1)m^(2)`
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