Start Free Mock LoginAlready registered? Login here

Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionMedium2 minQB

PhysicsMediumsingle choice

A prism having refractive index $2$ and refracting angle $3 0^{\circ}$ , has one of the refracting surfaces polished. A beam of light incident on the other refracting surface will trace its path if the angle of incidence is :

Options:

Answer:

Solution:

Ray retraces its path if it falls normally on the polished face

Then $r_{1} = A = 3 0^{\circ}$

$sin i = 2 sin 3 0^{\circ} = \frac{1}{2}$

$i = 4 5^{\circ}$

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:TIR/Prism and Dispersion

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...