Home
Class 12
PHYSICS
The stopping potential for photoelctrons...

The stopping potential for photoelctrons emitted from a surface illuminateed by light of wavelength 6630 Å is 0.42 V . If the threshold frequency is `x xx 10^(13)` /s where x is ______ (nearest integer ) .
`( " Given speed light " = 3 xx 10^(8) m/s ,"Plancks constant " = 6.63 xx 10^(-34) " Js")`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • JEE MAINS 2022

    JEE MAINS PREVIOUS YEAR|Exercise Physics -Section A|20 Videos

  • JEE MAINS 2022

    JEE MAINS PREVIOUS YEAR|Exercise Physics-Section A |20 Videos

  • JEE MAINS 2022

    JEE MAINS PREVIOUS YEAR|Exercise PHYSICS (SECTION A)|20 Videos

  • JEE MAINS 2021

    JEE MAINS PREVIOUS YEAR|Exercise Physics (Section B )|10 Videos

  • JEE MAINS 2023 JAN ACTUAL PAPER

    JEE MAINS PREVIOUS YEAR|Exercise Question|360 Videos

Similar Questions

Explore conceptually related problems

A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x xx 10^20 . The value of x is _______. (Nearest integer) [Given : h = 6.63 xx 10^(-34) Js and c = 3.0 xx 10^8 ms^(-1) ]

A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x xx 10^20 . The value of x is _______. (Nearest integer) [Given : h = 6.63 xx 10^(-34) Js and c = 3.0 xx 10^8 ms^(-1) ]

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 )

The wavelength of electrons accelerated from rest through a potential difference of 40 kV is x - 10 ^(-12) m. The value of x is ________ (Nearest integer) Given : Mass of electron = 9.1 xx 10 ^(-31) kg Charge on a electron = 1. 6 xx 10 ^(-19) C Planck's constant = 6.63 xx 10 ^(-34) Js

If the deBroglie wavelenght of an of a photon of frequency 6xx 10 ^4 Hz ,then the speed of electron is equal to (Speed of light =3 xx 10^8 m//s Planck's constant =6.63 xx 10 ^(-34) J s Mass of electron =9.1 xx 10 ^(-31) kg

A metal whose work function is 3.3eV is illuminated by light of wavelength 3 xx 10^(-7)m . What is the threshold frequency for photoelectric emission? Plank's constant = 6.6 xx 10^(-34) Js?

The threshold wavelength for a surface having a threshold frequency of 0.6xx10^(15) Hz is (given c=3xx10^(8)m//s )

The kinetic energy of the electron emitted when light of frequency 3.5 xx 10^15 H z falls on a metal surface having threshold frequency 1.5 xx 10^15 H z is (h = 6.6 xx 10^-34 Js) .

A star emitting light of wavelength 6000 Å is moving towards the earth with a speed of 3 xx 10^(6) m//s . What is the apparent wavelength of the emitted light ?