Photoelectric effect| Class 12|

Assertion : Photoelectric effect supports the quantum nature of light. Reason : Photoelectric emission is instantaneous.

Light of wavelength lambda falls on metal having work functions hc//lambda_(0) . Photoelectric effect will take place only if :

Light of wavelength lambda falls on metal having work functions hc//lambda_(0) . Photoelectric effect will take place only if :

Photoelectric effect takes place in element A. Its work funcation is 2.5 eV and threshold wavelength is lambda . An other element B is having work function of 5 eV . Then find out the wavelength that can produce photoelectric effect in B.

Describe photoelectric effect and state the laws of photoelectric emission.

Photoelectric effect is the maximum in

Wave nature of light cannot explain photoelectric effect because in photoelectric effect , it is seen that

In photoelectric effect, what is meant by the term .threshold frequency.?

Assertion: In both radio actiivity and photoelectric effect electrons may be ejected. Reason: In photoelectric effect and radio activity emission occurs only of unstable elements.

Assertion: Be exhibit photoelectric effect. Reason: Be has least IP in the s-block.