QJEEM19Ph1a58: JEE Main 2019 Physics - Class 12 JEEM19Ph1a58 Solution: A light wave is incident normally on a glass slab of refractive …

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QJEEM19Ph1a58: JEE Main 2019 Physics - Class 12 JEEM19Ph1a58 Solution: A light wave is incident normally on a glass slab of refractive …

A light wave is incident normally on a glass slab of refractive index 1.5. If 4 % of light gets reflected and the amplitude of the electric field of the incident light is 30 V/m, then the amplitude of the electric field for the wave propagating in the glass medium will be :

Multiple Choice Options

A 6 V/m
B 10 V/m
C 30 V/m
D 24 V/m

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Accepted Answer

P_refracted =

\frac{96}{100} P i

\Rightarrow

K₂A

P i_{t}^{2}

=

\frac{96}{100}

K₁A

_{i}^{2}

\Rightarrow

r₂A

_{i}^{2}

=

\frac{96}{100}

r₁A

_{i}^{2}

\Rightarrow

A

_{t}^{2}

=

\frac{96}{100} \times \frac{1}{\frac{3}{2}} \times {(30)}^{2}

A₁

\sqrt{\frac{64}{100} \times {(30)}^{2}} = 24

QJEEM19Ph1a58: JEE Main 2019 Physics - Class 12 JEEM19Ph1a58 Solution: A light wave is incident normally on a glass slab of refractive …

Multiple Choice Options

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