Home
Class 12
PHYSICS
When a piece of metal is illuminated by ...

When a piece of metal is illuminated by monochromatic light of wavelength `lamda`, the stopping potential for photoelectric current is `2.5V_(0)`. If the same surface is illuminated by light of wavelength `1.5 lamda`, the stopping potential becomes `V_(0)`. Find the out the value of threshold wavelength for photoelectric emission.

Text Solution

Verified by Experts

The correct Answer is:
`2.25 lamda`
Promotional Banner

Topper's Solved these Questions

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Entrance Corner (Assertion- Reason Type)|10 Videos

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Entrance Corner (Multiple Correct Answer Type)|10 Videos

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Problem Set- II)|15 Videos

  • OPTICAL INSTRUMENTS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|8 Videos

  • QUESTION PAPER OF NEET 2017

    CHHAYA PUBLICATION|Exercise QUESTION PAPERS OF (NEET) (2017)|39 Videos

Similar Questions

Explore conceptually related problems

A certain, metallic surface is illuminated with monochromatic light of wavelength, lamda . The stopping potential for photoelectric current for this light is 3 V_(0) . If the same surface is illuminated with light of wavelength 2lamda , the stopping potential is V_(0) . The threshold wavelength for this surface for photoelectric effect is

When a certain metalic surface is illuminated with monochromatic light of wavelength lamda the stopping potential is V_0 When the same surface is illuminated with light of wavelength 2lambda , the stopping potential frac(V_0)(4) ./ If the velocity of light in air is C, then find threshold frequency. Write down de Brogile hypotesis.

When a certain metal surface is illuminated with light of frequency v, the stopping potential for photoelectric current is V_(0) . When the same surface is illuminated by light of frequency (v)/(2) the stopping potent (V_(0))/(4) . The threshold frequency for photoelectric emission is

When a metallic surface is illuminated with radiation of wavelength lamda , the stopping poential is V. If the same surface is illuminated with radiation of wavelength 2lamda , the stopping potential is V/4 . The threshold wavelength for the metallic surface is

When radiation of wavelength lamda is incidenton a metallic surface, the stopping potential is 4.8V. If the same surface is illuminated with radiation of double the wavelength, the stopping potential becomes 1.6V. What is the threshold wavelength for the surface?

If the stopping potential for photoelectric emission is 0.75 V, the kinetic energy of the fastest photoelectrons is

For a monochromatic radiation incident on a metal surface, the stopping potential is 2.0V. Find out the maximum velocity of the emitted photoelectrons.

Energy of incident photon on a metal surface is 5.0 eV and photoelectric stopping potential is 3.23V. Determine the threshold wavelength for the metal.

Threshold wavelength for photoelectric emission from a metal surface is 3800Å , Utraviolet light of wave-length 2600Å is incident on the metal surface. Find the work function of the metal and

A narrow slit of 2 mm width is illuminated by a monochromatic light of wavelength 500 nm. What would be the intermediate distance between two first minima on either side of a screen kept 1m away?