×
Detail Form
We will send your result on your email id and phone no. please fill detail
1.
Cathode rays were discovered by
2.
The minimum energy required for the electron emission from the metal surface can be supplied to the free electrons by which of the following physical processes?
3.
The phenomenon of photoelectric emission was discovered in 1887 by
4.
A metal surface ejects electrons when hit by green light but nothing when hit by yellow light. The electrons will be ejected when the surface is hit by
5.
Which of the following statements is correct regarding the photoelectric experiment?
6.
Consider the following statements:
I. According to de Broglie hypothesis, particles have wave-like characteristics.
II. When an electron and a proton have the same de Broglie wavelength, they will have equal momentum.
Which of the above statements is/are correct?
I. According to de Broglie hypothesis, particles have wave-like characteristics.
II. When an electron and a proton have the same de Broglie wavelength, they will have equal momentum.
Which of the above statements is/are correct?
7.
Relativistic corrections become necessary when the expression for the kinetic energy 1/2 mv
8.
Photons absorbed in a matter are converted to heat. A source emitting h photon/sec of frequency v is used to convert 1 kg or ice at 0
9.
Two particles A1 and A2 of masses m1, m2(m1 > m2) have the same de Broglie wavelength. Then,
10.
In photoelectric effect, the number of photoelectrons emitted is proportional to