Home
Class 12
PHYSICS
In a laser tube all the photons...

In a laser tube all the photons

A

have same wavelength

B

have same energy

C

move in same direction

D

move with same speed

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Objective 2|6 Videos

  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Exercises|46 Videos

  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Short Answer|10 Videos

  • ALTERNATING CURRENT

    HC VERMA|Exercise Exercises|19 Videos

  • CAPACITORS

    HC VERMA|Exercise Exercise|2 Videos

Similar Questions

Explore conceptually related problems

A 100 W sodium lamp radiates energy uniformly in all directions .The lamp located at the centre of a large sphere the absorbs all the sodium light which is incident on it.The wavelength of the sodium light 589 nm.(a) what is the energy per photo assosciated with the sodium light? (b)At what rate are the photons delivered to the sphere.

Statement-1 : In photoelectric effect, the number of photoelectrons emitted is always equal to number of photons incident. and Statement-2 : All the photons fallin on the surface will eject photoelctron, is not necessary.

A LASER is a source of very intense, monochromatic, and unidirectional beam of light.These properties of a laser light can be exploited to measure long distance. The distance of the Moon from the Earth has been already determined very precisely using a laser as a source of light . A laser light beamed at the Moon takes 2.56 s to return after reflection at the Moon's surface. How much is the radius of the lunar orbit around the Earth ?

Water rises to a height of 2 cm in a capillary tube. If the tube is tilted 60^@ from the vertical, water will rise in the tube to a length of

Monochromatic light of frequency 6 times 10^14 Hz is produced by laser. Each photon has an energy=…….

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. (a) Find the energy and momentum of each photon in the light beam, (b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and (c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?

Monichromatic light of wavelength 632.8 nm Is produced by a helium-neon laser.The power emitted is 9.42 mW. (b)How many photons per second,on the average ,arrive at a target irradiated by this beam ? (Assume the beam to have uniform cross-section which is less than the target area),and (c )How fast does a hydrogen atom have to travel in order to have the same moementum as that of the photon?

A hydrogen atom initially in the ground level absorbs a photon, which excites it to be the n=4 level. Determine the wavelength and frequency of the photon.