Ray Optics Test...

The wavelength of light in two liquids \'x\' and \'y\' is3500 Åand 7000 Å, then the critical angle of x relative to y will be

If the critical angle for total internal reflection from a medium to vacuum is 30°, the velocity of light in the medium is

A ray of light is incident at an angle i from denser to rare medium. The reflected and the refracted rays are mutually perpendicular. The angle of reflection and the angle of refraction are respectively r and r\', then the critical angle will be

A diver at a depth of 12 m in water (µ = 4/3) sees the sky in a cone of semi-vertical angle

Critical angle is that angle of incidence in the denser medium for which the angle of refraction in rarer medium is

The reason for shining of air bubble in water is

With respect to air critical angle in a medium for light of red colour [λ₁] is θ. Other facts remaining same, critical angle for light of yellow colour [λ₂] will be

\'Mirage\' is a phenomenon due to

The speed of light in media M₁ and M₂ is 1.5 × 10⁸ m/s and 2.0 × 10⁸ m/s respectively. A ray of light entersfrom medium M₁ to M₂ at an incidence angle i. If the ray suffers total internal reflection, the value of i is

When a ray of light emerges from a block of glass, the critical angle is