1
NEET 2022 Phase 1
+4
-1

In a Young's double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nm wavelength is used. If the wavelength of light is changed to 400 nm, then the number of fringes he would observe in the same region of the screen is

A
6
B
8
C
9
D
12
2
NEET 2020 Phase 1
+4
-1
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
A
1.83 $$\times$$ 10-7 rad
B
7.32 $$\times$$ 10-7 rad
C
6.00 $$\times$$ 10-7 rad
D
3.66 $$\times$$ 10-7 rad
3
NEET 2020 Phase 1
+4
-1
In Young's double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :
A
half
B
four times
C
one-fourth
D
double
4
NEET 2019
+4
-1
In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1m away, was found to be 0.2o. What will be the angular width of the first minima, ($$\mu$$water = 4/3) if the entire experimental apparatus is immersed in water?
A
0.15o
B
0.05o
C
0.1o
D
0.266o
EXAM MAP
Medical
NEETAIIMS
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12