Optics Question 1066

Question: Monochromatic green light of wavelength 5×107m illuminates a pair of slits 1 mm apart. The separation of bright lines on the interference pattern formed on a screen 2 m away is

[CPMT 1971; DPMT 1999]

Options:

A) 0.25 mm

B) 0.1 mm

C) 1.0 mm

D) 0.01 mm

Show Answer

Answer:

Correct Answer: C

Solution:

β=λDd=5×107×2103m=103m=1.0 mm .



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