Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

Two mirrors inclined at angle θ to each other . A ray incident parallel to one of the mirror retrace its path after third reflection , then θ is 1) 45 2) 30 3) 60 4) All of these

Two mirrors inclined at angle θ to each other . A ray incident parallel to one of the mirror retrace its path after third reflection , then θ is


1) 45


2) 30


3) 60


4) All of these

Grade:12

1 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

Dear mayank

Dear mayank

 

7862-207_7662_untitled.JPG

at third time when ray falls on mirror it should be perpendicular then only it will retrace its path

so   3θ = 90

     θ =30

 

Please feel free to post as many doubts on our discussion forum as you can.
If you find any question Difficult to understand - post it here and we will get you
the answer and detailed  solution very  quickly.

 We are all IITians and here to help you in your IIT JEE preparation.

All the best.
 
Regards,
Askiitians Experts
Badiuddin

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free