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

in youngs experiment two coherent sources placed 0.90mm apart and fringes are observed one metre away. if it produces the second dark fringe at a distance of 1mm from the central fringe , the wavelenght of monochromatic light used would be options a. 60*10-4cm b. 10*10-4cm c. 10*10-5cm d. 6*10-5cm

in youngs experiment two coherent sources placed 0.90mm  apart and fringes are observed one metre away. if it produces the second dark fringe at a distance of 1mm from the central fringe , the wavelenght of monochromatic light used would be  
options
 a. 60*10-4cm
b. 10*10-4cm
c. 10*10-5cm
d. 6*10-5cm

Grade:12th pass

1 Answers

Arun
25763 Points
3 years ago
Dear student
 
Distance of nth dark fringe from central fringe
 
Xn = (2n -1)\lambdaD/2d
 
Hence X2 = 3 *\lambda D/2d
 
1 * 10^-3 = 3 * \lambda * 1/2 * 0.9 * 10^-3
 
\lambda = 6 * 10^-5 cm
 
Hence option D is correct.

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