Monochromatic light to wavelength 6000Å travels through glass of refractive index `(3)/2`. The distance travelled by the wavefront 1 picosecond is

Monochromatic light of wavelength 6000 overset@ (A) travels through a glass of refractive index frac(3)(2) . The distance travelled by the light in 1 picosecond is

A beam of monochromatic blue light of wavelength 4200 Å in air , travels in water of refractive index (4)/(3) . What is the its wavelength in water ?

A beam of monochromatic blue light of wavelength 4200 Å in air travels in water of refractive index 4/3. Its wavelength in water will be:

A monochromatic light of wavelength 4800 A travelling in air is incident on a glass slab of refractive index 1.5, its wavelenght in glass slab is

A monochromatic light of wavelength 4800 A travelling in air is incident on a glass slab of refractive index 1.5, its wavelenght in glass slab is

A beam of monochromatic light of wavelength 6000 Å in air enters water of refractive index ""_(a)n_(w)=(4)/(3) . What is its wavelength in water ?