wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A ray of light falls on a transparent glass slab with refractive index (relative to air) of 1.62. The angle of incidence for which the reflected and refracted rays are mutually perpendicular is

A
tan1(1.62)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
sin1(1.62)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
cos1(1.62)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C tan1(1.62)


From law of reflection:-

r=i

And from figure:-

R+90o+r=180o

R=90or

R=90oi

Now from Snell's Law:-
sinisinR=μ

sinisin(90oi)=μ

sinicosi=μ

tani=μi=tan1μ

i=tan1(1.62)

Answer-(A)


833621_691702_ans_a5efac79bbed4b909b1d9be9d975c072.jpg

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Playing with Refractive Index
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon