JEE Main 2015 · 11 Apr · Shift 1 · Physics Q26

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PhysicsSingle correct+4 / -1Question 26 of 90

Unpolarized light of intensity $I_0$ is incident on surface of a block of glass at Brewster's angle. In that case, which one of the following statements is true ?

transmitted light is partially polarized with intensity

I_0/2

transmitted light is completely polarized with intensity less than

I_0/2

reflected light is completely polarized with intensity less than

I_0/2

reflected light is partially polarized with intensity

I_0/2

Answer and worked solution

Official answer: C

At Brewster's angle only the component polarised perpendicular to the plane of incidence is reflected, so the reflected light is completely polarised. Only part of that component is reflected, so its intensity is less than $\frac{I_0}2$ .

Topics:Polarisation and Brewster's law

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JEE Main 2015 · 11 Apr · Shift 1, Physics question 26