EASY
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Describe fresnel biprism and the angle of biprism.

Important Questions on Wave Optics

MEDIUM
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
Newton's rings are observed normally in reflected light of wavelength 5000 A∘. The diameter of the 10th  dark ring is 0.005 m. The radius of curvature of the lens is
MEDIUM
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In a bi-prism experiment, light of wavelength 5200 A0 is used to get an interference pattern on the screen. The fringe width changes by 1.3 mm when the screen is moved towards bi-prism by 50 cm. Find the distance between two virtual images of the slit.
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
Estimate the distance for which ray optics is good approximation for an aperture of 5 mm and wavelength 500 nm?
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

In a biprism experiment, to determine the distance between coherent sources, the convex lens is introduced

EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

If the wavelength of light is kept constant and the biprism is moved towards the screen, then the fringe width,

MEDIUM
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In a Biprism experiment, distance between sources and screen is 1.0 m. Fringes of width 5 mm are obtained when wavelength of light is 5000 Å . Separation of two coherent sources is
HARD
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

For the biprism experiment shown in the figure, the fringe width does not increases when

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EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

In Fresnel's biprism, the shape of interference fringes formed will be

HARD
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In Fresnel's biprism experiment, the distance between biprism and screen is 4m. The angle of prism is 2×10-3 radian the refractive index of glass of biprism is 1.5. The fringe width observed on the screen is 15×10-4 m . Find the number of fringes on the screen
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
What is the effect on Fresnel's biprism experiment when the use of white light is made?
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In a biprism experiment, by using light of wavelength 5000 A∘, 5 mm wide fringes are obtained on a screen 1.0 m away from the coherent sources. The separation between the two coherent sources is
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

In biprism experiment, clear and sharp interference pattern is seen, when

MEDIUM
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In Fresnel's biprism experiment a mica sheet of refraction index 1.5 is placed in the path of one of the interfering beams. This results in shifting of central fringe through 5 fringe width. If wavelength of light used is 6000 Å , then thickness of the sheet will be
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

In a biprism experiment, the field that contains the fringes is

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HARD
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

For the biprism experiment shown in the figure, the fringe width does not increases when

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HARD
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
The distances from a Fresnel biprism to a narrow slit and a screen are equal to a = 25 cm and b = 100 cm respectively. The refracting angle of the glass biprism is equal to θ = 20. Find the wavelength of light if the width of the fringe on the screen is Δx = 0.55 mm.
HARD
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In Fresnel's biprism experiment, a mica sheet of refractive index 1.5 and thickness 6 x 10-6 m is placed in the path of one of interfering beams, as a result of which, the central fringe gets shifted through five fringe widths. Then, calculate the wavelength of the light.
EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror

In Fresnel's biprism experiment, when the distance between the slit aperture and eye is increased, then distance between the fringes,

EASY
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
In a Fresnel biprism experiment, two positions of the lens give separation between the slits as 16 cm and 9 cm respectively. Actual distance of separation is
MEDIUM
Physics>Optics>Wave Optics>Fresnel Biprism and Lloyd's Mirror
If prism angle α=1o, μ=1.54, distance between screen and prism D=0.7 m , distance between prism and source a=0.3 m, λ=180 π nm , then in Fresnel biprism find the value of β (fringe width).