TOTAL INTERNAL REFLECTION

Assertion: White light is incident on face AB of an isosceles right angled prism as shown. Colours, for which refractive index of material of prism is more than 1.414, will be able to emerge from the face AC. Reason:Total internal reflection cannot take place for the light travelling from a rarer medium to a denser medium.

Assertion: In ionospheric reflection, phase change does not occurs with the light wave. Reason: The ionosphere reflection is similar to the tatol internal reflection is similar to the total internal reflection in miral.

Material A has critical angle i_(A) , and material B has critical angle i_(B)(i_(B)gti_(A)) . Then which of the following is true (i) Light can be totally internally reflected when it passes from B to A (ii) Light can be totally internally relected when it passes from A to B (iii) Critical angle for total internal reflection is i_(B)-i_(A) (iv) Critical angle between A and B is sin^(-1)((sini_(A))/(sin i_(B)))

A ray of light falls normally on one face of a right angled prims of refracting angle A. It suffers two total internal reflections before coming out of prism parallel to incident ray as shown. Refractive index to prism material will be:

A ray of light is incident on a glass prism of refractive index mu and refractive angle A. If it just suffers total internal reflection at the other face, obtain an expression relating the angle of incidence , angle of prism and critical angle.

ACB is right-angled prism with other angles as 60^(@) and 30^(@) . Refractive index of the prism is 1.5. AB has thin layer of liquid on it as shown. Light falls normally on the face Ac. For total internal reflection, maximum refractive index of the liquid is

The figure shows the path of a ray passing through an equiangular prism PQR. It is incident on face PR at angle slightly greater than the critical angle for total internal reflection . If the angle alpha shown in the figure is 30^(@) . Calculate the R.I. of the material of the prism.

As shown in figure, light is incident normally on one face of the prism. A liquid of refractive index mu is placed on the horizontal face AC. The refractive index of prism is 3//2 . If total internal reflection taken place on face AC, m should be less than (Isqrt(3))/(4) , where I is ann integer. Find the value of I.

A glass vessel in the shape of a triangular prism is filled with water, and light is incident normally on the face xy. If the refractive indices for water and glass are 4//3 and 3//2 respectively, total internal reflection will occur a the glass-air surface xz only for sin theta greater than A 1//2 B 2//3 C 3//4 D 8//9 E 16//27

Light is incident normally on face AB of a prism as shown in Figure. A liquid of refractive index mu is placed on face AC of the prism. The prism is made of glass of refractive indes 3//2 . Find the limits of mu for which total internal reflection takes place on the face AC. (A) mu gt (sqrt(3))/(2) (B) (3 sqrt(3))/(4) gt mu (C) mu gt sqrt(3) (D) mu lt (sqrt(3))/(2)