Worksheetswahsh
Total questions: 8
Worksheet time: 41mins
A light ray falls on the boundary surface between two media, if the angle of incidence is 600 and the angle of refraction is 300 , the relative refractive index from the first medium to the second medium equals ………….
2
3
2
21
A red light ray falls from air on the surface of glass. if the wavelength of red light in space is 7000 Ao and the refractive index of glass is 1.5, the wavelength of red light in glass is ………………
10500 Ao
8564 Ao
5543 Ao
4667 Ao
When a light ray falls at an angle from a medium of refractive index 1.2 on a surface of another medium of refractive index 1.5
its speed increases and it refracts toward the normal line
its speed decreases and it refracts toward the normal line
its speed decreases and it refracts away from the normal line
its speed increase and it refracts away from the normal line
A light ray falls from air on the surface of a glass slab at an angle of 52o. if the ray is deviated by an angle 19o, the refractive index of glass is …………….
0.83
1.33
1.45
1.65
If the distance between the first maxima and the central fringe in Young's double-slit experiment is 2 mm, so the distance between the third minima and the central fringe equals ..........
2 mm
5 mm
6 mm
7 mm
In Young's double-slit experiment, if the distance between two coherent sources was 1.6 mm where the fringes were formed on a screen at distance 60 cm the two sources and the third bright fringe was at 0.6 mm from the central fringe, find the wavelength of the used light.
2×10−4
75×10−3
0.75
0.02
Light waves fall on different apertures of different sizes, so the diffraction of light will be most observable if the aperture size is...............
1 m
10-2 m
10-3 m
10-5 m
In Young's double-slit experiment, if R= 104 d, then ………………
Δ y =λ
Δ y =104 λ
Δ y =10−4 λ
Δ y =10λ
