Question

68. Light of wavelength 1 = 5600 Å falls on a double
vo slit arrangement having separation d = 0.1 mm. A
thin lens of focal length f = 0.5 m is placed near the
slits. What is the linear separation of fringes on a
screen placed in the focal plane of the lens?
(a) 2.4 mm
(b) 2.7 mm
(c) 2.8 mm
(d) 3.3 mm​

Answer 1

68. Light of wavelength 1 = 5600 Å falls on a double

vo slit arrangement having separation d = 0.1 mm. A

thin lens of focal length f = 0.5 m is placed near the

slits. What is the linear separation of fringes on a

screen placed in the focal plane of the lens?