How many photons are emitted by a laser ...

How many photons are emitted by a laser source of `5 xx 10^(-3)` W operating at 632.2 nm in 2 second `(h = 6.63 xx 10^(-34)Js)`?

`3.2xx10^16`

`1.6xx10^16`

`4xx10^16`

`0.4xx10^16`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

DUAL NATURE OF RADIATION AND MATTER
AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION B.Objective (Only one answer)|6 Videos
DUAL NATURE OF RADIATION AND MATTER
AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION C. Objective (More than one answer)|4 Videos
DUAL NATURE OF RADIATION AND MATTER
AAKASH INSTITUTE|Exercise Try Yourself|41 Videos
CURRENT ELECTRICITY
AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-J|10 Videos
ELECTRIC CHARGES AND FIELDS
AAKASH INSTITUTE|Exercise SECTION -J(Aakash Challengers Questions)|5 Videos

Similar Questions

Explore conceptually related problems

How many photons are emitted per second by a 5m W laser source operating at 632.8nm?

How many photons are emitted per second by a 5mW laser source operating at 632.8nm?

How many photons are emitted per second by a 5 mW laser source operating at 632.8 nm?

A monochromatic source of light emits photons of frequency 6 xx 10^(14 )Hz . The power emitted by the source is 8 x 10^(-3)W. Calculate the number of photons emitted per second. (Take h = 6.63 xx 10^(-34) Js )

The number of photons emitted per second by a 60 W source of monochromatic light of wavelength 663 nm is: (h=6.63xx10^(-34)Js )

A 600 W mercury lamp emits monochromatic radiation of wave length 313.3 nm. How many photons are emitted from the lamp per second ? ( h = 6.626 xx 10^(-34) Js , velocity of light = 3xx 10^(8) ms^(-1) )

Monochromatic light of frequency 6xx10^(14)Hz is produced by a laser. The power emitted is 2xx10^(-3) W. The number of photons emitted per second is ("Given h"=6.63xx10^(-34)Js)

AAKASH INSTITUTE-DUAL NATURE OF RADIATION AND MATTER -ASSIGNMENT SECTION A. Objective (Only one answer)

Two sources A and B have same power . The wavelength of radiation of A...
Text Solution
|
The work function of a certain metal is 2.3 eV. If light of wave numbe...
Text Solution
|
When the electromagnetic radiations of frequencies 4 xx 10^(15) Hz and...
Text Solution
|
If the velocity of an electron is doubled, its de-Broglie frequency wi...
Text Solution
|
The duration of a laser pulse is 10^(-8) s. The uncertainly in its ene...
Text Solution
|
A proton and an alpha particle are accelerated through the same potent...
Text Solution
|
How many photons are emitted by a laser source of 5 xx 10^(-3) W opera...
Text Solution
|
The number of photons emitted by a 60 W bulb per second, if 10% of the...
Text Solution
|
The momentum of a photon having energy equal to the rest energy of an ...
Text Solution
|
A perfectly reflecting solid hemisphere of radius R is placed in the p...
Text Solution
|
Find the ratio of de Broglie wavelength of molecules of hydrogen and h...
Text Solution
|
A particle which has zero rest mass and non - zero energy and momentum...
Text Solution
|
Dual Nature Of Electromagnetic Radiation
Text Solution
|
An electron of mass m when accelerated through a potential difference ...
Text Solution
|
If an electron and a photon propagate in the form of waves having the...
Text Solution
|
The de - Broglie wavelength of a neutron at 27 ^(@) C is lambda. What ...
Text Solution
|
The wavelength of the matter wave is independent of
Text Solution
|
The graph between intensity of light falling on a metallic plate (l) w...
Text Solution
|
A point source of light is used in an experiment on photoelectric effe...
Text Solution
|
From the figure describing photoelectric effect we may infer correctly...
Text Solution
|