Question

In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength 5890 Å is 4 volt. If the yellow light is replaced by blue light of wavelength 4000 Å, the stopping potential is ____________.

विकल्प

• 4 V

• zero volt

• more than 4V

• less than 4V

Answer 1

In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength 5890 Å is 4 volt. If the yellow light is replaced by blue light of wavelength 4000 Å, the stopping potential is more than 4V.

Explanation:

When yellow light is replaced by blue light with a shorter wavelength, the energy of the photons increases, resulting in a higher maximum kinetic energy of the released electrons. As a result, the stopping potential rises over 4V.