🏫 Board🧲 Physics

Young's double slit inteference apparatus is immersed in a liquid of refractive index 1.44. It has slit separation of 1.…

Q1

Young's double slit inteference apparatus is immersed in a liquid of refractive index 1.44. It has slit separation of 1.5 mm. The slits are illuminated by a parallel beam of light whose wavelength in air is 690 nm. The fringe-width on a screen placed behind the plane of slits at a distance of 0.72 m, will be :

a

0.33 mm

b

0.63 mm

c

0.46 mm

d

0.23 mm

🔒
Answer & explanation — PYQ Pass

Options are free to see. Unlock the correct answer and full explanation with Pass.

Unlock · ₹149

Practice more Board Physics PYQs

See every question on Wave Optics, or browse the full Board question bank.

See all questions on Wave Optics →