Optics 6 Question 39

41. In the Young’s double slit experiment, the interference pattern is found to have an intensity ratio between the bright and dark fringes as 9 . This implies that

(1982, 2M)

(a) the intensities at the screen due to the two slits are 5 units and 4 units respectively

(b) the intensities at the screen due to the two slits are 4 units and 1 unit respectively

(c) the amplitude ratio is 3

(d) the amplitude ratio is 2

Fill in the Blanks

Show Answer

Solution:

  1. ImaxImin=(I1+I2)2(I1I2)2=I1/I2+1I1/I212=9 (Given)

Solving this, we have I1I2=4 but IA2

A1A2=2

Correct options are (b) and (d).



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक