JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
The stopping potential for electrons emitted from a photosensitive surface illuminated by light of wavelength 491 nm is 0.710 V. When the incident wavelength is changed to a new value, the stopping potential is 1.43 V. The new wavelength is :
- A400 nm
- B329 nm
- C309 nm
- D382 nm
More from Dual Nature of Radiation
- What should be the order of arrangement of de-Broglie wavelength of electron ( e), an -particle ( a) and proton ( p) given that all have the same kinetic energy?2021 · MCQ
- A particle of mass 4M at rest disintegrates into two particles of mass M and 3M respectively having non zero velocities. The ratio of de-Broglie wavelength of particle of mass M to that of mass 3M will be :2021 · MCQ
- An electron moving with speed v and a photon moving with speed c, have same D-Broglie wavelength. The ratio of kinetic energy of electron to that of photon is :2021 · MCQ
- When radiation of wavelength is incident on a metallic surface, the stopping potential of ejected photoelectrons is 4.8 V. If the same surface is illuminated by radiation of double the previous wavelength, then the stopping…2021 · MCQ
- A light beam of wavelength 500 nm is incident on a metal having work function of 1.25 eV, placed in a magnetic field of intensity B. The electrons emitted perpendicular to the magnetic field B, with maximum kinetic energy are bent into…2021 · Numerical
- In a photoelectric experiment ultraviolet light of wavelength 280 nm is used with lithium cathode having work function = 2.5 eV. If the wavelength of incident light is switched to 400 nm, find out the change in the stopping…2021 · MCQ
- The de-Broglie wavelength of a particle having kinetic energy E is . How much extra energy must be given to this particle so that the de-Broglie wavelength reduces to 75% of the initial value?2021 · MCQ
- Given below are two statements : one is labeled as Assertion A and the other is labelled as Reason R. Assertion A : An electron microscope can achieve better resolving power than an optical microscope. Reason R : The de Broglie's…2021 · MCQ