Single Choice

A glass prism of refractive index $$8/5$$ is immersed in a liquid of refractive index $$4/3$$. A ray of light incident at grazing angle on one face emerges at grazing angle on the other face to the prism. The angle of the prism is :

A$$30^o$$
B$$60^o$$
C$$37^o$$
D$$none\ of\ these$$
Correct Answer

Solution

SIMILAR QUESTIONS

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The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if $$D_m$$ is the angle of minimum deviation?

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When the same monochromatic ray of light travels through glass slab and through water, the number of waves in glass slab of thickness $$6\ cm$$ is same as in water column of height $$7\ cm$$. If refractive index of glass is $$1.5$$ then refractive index of water is :

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Figure shows three transparent media of refractive indices $$\mu_1, \mu_2$$ and $$\mu_3$$. A point object O is placed in the medium $$\mu_2$$. If the entire medium on the right of the spherical surface has refractive index $$\mu_1$$, the image forms at O'. If this entire medium has refractive index $$\mu_3$$, the image forms at O". In the situation shown,

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The wavelength of sodium light in air is 589 nm. (a) Find its frequency in air. (b) Find its wavelength in water (refractive index = 1.33) (c) Find its frequency in water (d) Find its speed in water.

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Considering normal incidence of ray, the equivalent refractive index of combination of two slabs, as shown in figure, is

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A ray of light falls on a transparent glass slab of refractive index $$1.62$$. What is the angle of incidence, if the reflected ray and reflected ray are mutually perpendicular ?

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A ray of light travelling in glass having refractive index $$_{a}\mu_g=3/2$$ is incident at a critical angle $$C$$ on the glass air interface. If a thin layer of water is poured on glass air interface, then what will be the angle of emergence of this ray in air when it emerges from water air interface ?

Optics

In a medium of refractive index $$n_1$$, a monochromatic light of wavelength $$\lambda_1$$ is travelling. When it enters in a denser medium of refractive index $$n_2$$, the wavelength of the light in the second medium is :

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Solar rays are incident at $$45^o$$ on the surface of water $$(\mu =4/3)$$. What is the length of the shadow of a pole of length $$1.2\ m$$ erected at the bottom of the pond, if the pole is verticle assuming that $$0.2\ m$$ of the pole is above the water surface?

Optics

The number of images formed by the lens, if an object is placed on the axis of the lens is :

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