Optics Question 154

Question: In Young’s double slit experiment the y-coordinates of central maxima and 10th maxima are 2 cm and 5 cm respectively. When the YDSE apparatus is immersed in a liquid of refractive index 1.5 the corresponding y-coordinates will be

Options:

A) 2 cm, 7.5 cm

B) 3 cm, 6 cm

C) 2 cm, 4 cm

D) 4/3 cm, 10/3 cm

Show Answer

Answer:

Correct Answer: C

Solution:

Fringe width b µ l.

Therefore, l and hence b decreases 1.5 times when immersed in liquid.

The distance between central maxima and 10th maxima is 3 cm in vacuum.

When immersed in liquid it will reduce to 2 cm.

Position of central maxima will not change while 10th maxima will be obtained at y = 4cm.



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक