Question Detail

PHY 102 Test Compilation PHY 102 27 Objective Question

Question

In a Young's double slit experiment, the first dark fringe makes an angle of 1 degree with the axis. Calculate the slit separation if light of wavelength 600 nm is used.
Options
A =lambda/2 for first dark fringe. d=(600e-9)/(2 sin1deg)=1.72e-5 m.
B 3.4x10-5 m
C 1.7x10-5 m
Correct Answer
D 3.4x10-6 m
Correct Answer

Option C is the correct answer.

Detailed Explanation

d sin(theta)=lambda/2 for first dark fringe. d=(600e-9)/(2 sin1deg)=1.72e-5 m.

Hint

d sin(theta)=lambda/2 for first dark fringe.

Question Info