Questions
ABC is an isosceles right angled triangle with the angle BAC 90o. A ray of light parallel to the base BC strikes the face AB. The refracted ray in the prism strikes the base BC. If the refractive index of the material of the prism is , find the total angle of deviation of the final emergent ray
detailed solution
Correct option is C
sinα=siniμ=sin90o−45o2=12⇒r=30oNow, 45o+90o+r+θ=180o⇒θ=15o ∴ i1=90o−θ=75oNow critical angle at glass-air interface, c=sin−11μ=sin−112=45oSince i1>c, the ray incident on the base BC will suffer total internal reflection and the final emergent ray through the face AC will be parallel to the base BC as shown in the figure. Hence total angle of deviation is zero.Talk to our academic expert!
Similar Questions
The refracting angle of a prism, made of a transparent material is 120o. A ray of light is incident on one refracting surface of the prism. What should be the maximum refracting index of the material of the prism for which the ray of light can pass into the surrounding air through the other refracting surface?
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests