IIT JAM

follow

Top Resources

H

Himanshu posted an Question

May 22, 2020 • 06:32 am

30 points

IIT JAM
Physics (PH)

Optics a screen is placed 50 mc ......

I am facing little bit problem in finding d Is their any thumb rule or short cuts where no of Maxima & minima were given!!!

3 Answer(s)

0 Likes
6 Comments
0 Shares

>
Ruby negi

here is a mistake in the question, here is y3-y1=3mm and D=50cm.. when you use in my derivation you will get 0.2mm
- Likes(0)
- Reply(0)

>
Abhishek singh Best Answer

There are two mistakes in the question, first is the distance of screen is 50 cm(it is written as 50 mc) and the second is, Y3-Y1 = 3 mm(they have given 3000mm) . Otherwise everything is fine. Solve the questions as follows. best regards.
- Likes(2)
- Reply(3)
doubts and discussions are welcome.
- Like(1)
you can always take small angle approximation in diffraction and interference questions
- Like(1)
yeah, you are right..there are certain mistakes in the question... thanks for correcting..
- Like(2)

>
Chandra prakash

see correct ans dear... I very helpful for you
- Likes(1)
- Reply(2)
I hope you got it my point dear
- Like(0)
if you any query.. free for ask
- Like(0)

>
Chandra prakash

dear Δy = 3mm.... ..becoz put this value in formula we get 0.2mm ans which is correct.. and I hope you got it my point dear
- Likes(1)
- Reply(0)

>
Chandra prakash

dear. I think que is wrong bcoz.....see attached.. file
- Likes(1)
- Reply(0)

>
Ruby negi

dear here is the solution.. I don't know what is mc, so I put it as it is. but the integer value of width is coming 2. means option b is only width, that why a,c,d is not width. and acct to question, a,c,d is correct ans...
- Likes(2)
- Reply(3)
Sorry for interrupting, you have done it correctly.
- Like(1)
but here is a typo in the question, they have written 50cm as 50mc
- Like(1)
yeah hopefully it is cm....
- Like(1)

T