Suppose that intensity of a laser is ( 315 ) W/ m ^2. The rms electric field, in units of V/m associated with...

Question

Suppose that intensity of a laser is ( 315 ) W/ m ^2. The rms electric field, in units of V/m associated with this source is close to the nearest integer is ( _0=8.86 10^ -12 C ^2 Nm ^ -2 ; c = 3 10^8 ms ^ -1 )

Accepted Answer

194

JEE Main 2020 Physics question

Solution