The velocities of light in two different media are 2*`10^8`m/s and 2.5 * `10^8`m/s respectively.The critical angle for these media is

The speed of light in media M_1 and M_2 are 1.5 xx 10^8 m//s and 2.0 xx 10^8 m//s respectively. A ray of light enters from medium M_1 to M_2 at an incidence angle i . If the ray suffers total internal reflection, the value of i is.

The velocity of light in the core of a step index fibre 2xx10^(8) m//s and the critical angle at the core-cladding interface is 80^(@) .Find the numerical aperture and the acceptance angle for the fibre in air.The velocity of light in vacuum is 3xx10^(8)m//s

Light travels in two media A and B with speeds 1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1) respectively. Then the critical angle between them is

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is

A body of mass m_(1) moving with a velocity 3 m//s collides with another body at rest of m_(2) . After collision the velocities of the two bodies are 2 m//s and 5 m//s , respectively , along the direction of motion of m_(1) . The ratio m_(1)//m_(2) is

When light is incident on a medium at angle i and refracted into a second medium at an angle r, the graph of sin r versus sin i is as shown. From this one can conclude that (i) the velocity of light in second medium is sqrt3 times the velocity of light in the first medium (ii) the velocity of light in the first medium is sqrt3 times the velocity of ligth in second medium (iii) the critical angle of the two media is given by sin i_C=1sqrt3 (iv) the critical anlge of the two media is given by sin i_C=1sqrt2

The components of a particles velocity in the directions at right angles are 3 m//s,4 m//s "and "12m//s respectively . The actual velocity of the particle , in m//s is

The refractive index of glass with respect to water is (9)/(8) . If the velocity of wavelength of light in glass are 2 xx 10^(8) m//s and 4000 Å respectively, find the velocity and wavelength of light in water.

The velocity of a certain monochromatic light, in a given transparent medium is 2.25xx 10^(8)m//s . What is the (a) critical angle of incidence, (b) polarising angle for this medium?