Home
Class 12
PHYSICS
Explain threshold wavelength....

Explain threshold wavelength.

Text Solution

AI Generated Solution

### Step-by-Step Solution for Explaining Threshold Wavelength 1. **Definition of Threshold Wavelength**: - The threshold wavelength, also known as the cutoff wavelength, is the maximum wavelength of incident light that can cause the photoelectric effect. It is the point at which the energy of the incoming photons is just sufficient to eject electrons from a metal surface. 2. **Energy of a Photon**: - The energy (E) of a photon can be expressed using the equation: \[ ...
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF MATTER AND RADIATIONS

    MBD -HARYANA BOARD|Exercise SHORT ANSWER TYPE QUESTIONS|29 Videos

  • DUAL NATURE OF MATTER AND RADIATIONS

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTION|1 Videos

  • CURRENT ELECTRICITY

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|20 Videos

  • E.M.I. and A.C.

    MBD -HARYANA BOARD|Exercise Exercise|10 Videos

Similar Questions

Explore conceptually related problems

A metal has a work function phi_(0) and its corresponding threshold wavelength is lambda_(0) . If the threshold wavelength for a metal whose work function is (phi_(0))/(3) is n lambda_(0) , then what is the value of n ?

In photoelectric effect stopping is 3V_0 for incident wavelength lambda_0 and stopping potential V_0 for incident wavelength 2 lambda_0 . Find threshold wavelength.

A metal has a threshold wavelength fo 6000 Å . Calculate (i) threshold frequency (ii) work function. Will there be photoelectric emission or not ?

The photoelectric threshold wavelength for potassium (work function being 2 eV ) is

The wave number corresponding to threshold wavelength of a given metal is 3 xx 10^(6) m^(-1) . The work function of the metal is

Calculate the binding energy per mole when threshold wavelength of photon is 240nm

If a photocell is illuminated with a radiation of 1240 A , then stopping potential is found to be 8 V. The work function of the emitter and the threshold wavelength are

Sodium and copper have work functions 2.3 eV and 4.6 eV respectively . Then the ratio of threshold wavelengths are respectively.

The photo electric threshold wavelength for a metal is 2750A^(0) . The minimum energy of a photon that can produce photoelectric effect in the metal is - - - - ev ?