Light Test - 2...

Light waves projected on oil shows colour due to _________

A glass slab of thickness 4 cm contains the same number of waves as 5 cm of water when both are traversed by the same monochromatic light. If the refractive index of water is 4/3, what is the refractive index of glass?

What will be the wavelength of sodium light in glass if it is 589.3 nm in air? (The refractive index of glass is 1.5.)

The refractive index of glass with respect to air is 1.6. The refractive index of air w.r.t. glass is

Light in air is incident upon a piece of crown glass at an angle of incidence 45.0°. What is the angle of refraction?

The refractive index of water is 1.333 and that of glass is 1.500. If the speed of light in glass is 2 x 10⁸ ms^–1, then what is the speed of light in water?

Convex lens of power 4 D and a concave lens of power 3D are placed in contact. What is the equivalent power of the combination?

A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. What is the nature and focal length of the combination?

How does the magnification (m) of the real image formed by a lens vary with the distance (X) of the object from the focus of a concave mirror?

A ray of light passes through a plane glass slab of thickness 't' and refractive index u = 1.5. The angle between the incident ray and emergent ray will be