EASY
JEE Advanced
IMPORTANT
Earn 100

Photoelectric effect was successfully explained first by
(a)Planck
(b)Hallwash
(c)Hertz
(d)Einstein
(e)Newton

100% studentsanswered this correctly

Important Questions on Modern Physics
EASY
JEE Advanced
IMPORTANT
In a photoelectric experiment for incident radiation, the potential difference to stop the ejection is . If the incident light is changed to , then the potential required to stop the ejection of electrons will be

EASY
JEE Advanced
IMPORTANT
The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is . The maximum kinetic energy acquired by electron due to radiation of wavelength will be

EASY
JEE Advanced
IMPORTANT
Energy conversion in a photoelectric cell takes place from

EASY
JEE Advanced
IMPORTANT
The work function of aluminium is . If two photons, each of energy strike an electron of aluminium, then emission of electrons will be

EASY
JEE Advanced
IMPORTANT
When radiation is incident on photoelectron emitter, the stopping potential is found to be . If for the electron is , the maximum velocity of the ejected electrons is

MEDIUM
JEE Advanced
IMPORTANT
Two identical metal plates show photoelectric effect by a light of wavelength falling on plate and on plate . The maximum kinetic energy is

MEDIUM
JEE Advanced
IMPORTANT
When radiation of wavelength is incident on a metallic surface, the stopping potential is . If the same surface is illuminated with radiation of double the wavelength, then the stopping potential becomes . Then, the threshold wavelength for the surface is

EASY
JEE Advanced
IMPORTANT
In a photoemissive cell with executing wavelength , the fastest electron has speed . If the exciting wavelength is changed to , the speed of the fastest emitted electron will be
