Advertisements
Advertisements
प्रश्न
A thin mica sheet of thickness 4 x 10-6 m and refractive index 1.5 is introduced in the path of the first wave. The wavelength of the wave used is 5000 A. The central bright maximum will shift ______.
पर्याय
4 fringes upward.
4 fringes downward.
10 fringes upward.
10 fringes downwards.
MCQ
रिकाम्या जागा भरा
उत्तर
A thin mica sheet of thickness 4 x 10-6 m and refractive index 1.5 is introduced in the path of the first wave. The wavelength of the wave used is 5000 A. The central bright maximum will shift 4 fringes upward.
Explanation:
Fringe shift,
`"W"_0 = "W"/ lambda("n"-1) "t"`
= `" W"/ (5000 xx 10^-10 ) (1.5 -1) xx 4xx 10^-6`
=4W
i.e., The central bright maximum will shift 4 fringes upwards.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
