Home
Class 11
PHYSICS
Monochromatic light to wavelength 6000Å ...

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

A

100 `mu m`

B

`200 mu m `

C

`300 mu m `

D

`400 mu m`

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(g)= (3 xx 10^(8))/(1.5) = 2 xx 10^(8)` m/s
1 picosecond = `10^(-12)` s
`therefore` Distance = ` V_(g) xx t = 2 xx 10^(8) xx 10^(-12)`
`= 2 xx 10^(-4)` m
`= 200 xx 10^(-6) = 200 mu m`
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    MARVEL PUBLICATION|Exercise Test Your Grasp|10 Videos

  • RAY OPTICS (MIRRORS, LENSES AND OPTICAL INSTRUMENTS)

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

  • VECTORS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|10 Videos

Similar Questions

Explore conceptually related problems

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 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 ?

Light of wavelength 6000 Å in air enters a medium of refractive index 1.5. What will be its wavelength in the medium ?

A monochromatic beam of light of wavelength 6000 A in vacuum enters a medium of refractive index 1.5 . In the medium its wavelength is…., its frequency is…..

Monochromatic light is refracted from air into the glass of refractive index mu . The ratio of the wavelength of incident and refracted waves is

Monochromatic light of wavelength lambda_1 travelling in medium of refractive index n_1 enters a denser medium of refractive index n_2 . The wavelength in the second medium is

Light passess through glass of refractive index 1.5 . What is the time required for light to travel 4 xx 10^(8) m in glass ?