# Dual Nature Of Radiation And Matter

## A proton has kinetic energy which is equal to that of a photon. The wavelength of photon is and that of proton is . The ratio of is proportional to

A
B
C
D
View Solution ## The speed of the particle that can take discrete values is proportional to

A
B
C
D
View Solution ## A photon of energy collides inelastically with a Hydrogen atom in ground state. After a certain time interval of few micro seconds another photon of energy collides inelastically with the same hydrogen atom, then the observation made by a suitable detector is

A
1 photon with energy and an electron with energy
B
2 photon with energy
C
2 photon with energy
D
One photon with energy and 1 electron with energy
View Solution ## The allowed energy for the particle for a particular value of n is proportional to :

A
B
C
D
View Solution ## Light of wavelength  falls on a cathode plate inside a vacuum tube as shown in the figure. The work function of the cathode surface is  and the anode is a wire mesh of conducting material kept at a distance d from the cathode. A potential difference V is maintained between the electrodes. If the minimum de Broglie wavelength of the electrons passing through the anode is , which of the following statement(s) is(are) true?

A
increases at the same rate as for
B
is approximately halved, if d is doubled
C
decreases with increase in and
D
For large potential difference is approximately halved if V is made four time
View Solution ## The graph between and stopping potential (V) of three metals having work functions and in an experiment of photo-electric effect is plotted as shown in the figure. Which of the following statement(s)  correct? [Here is the wavelength of the incident ray].

A
Ratio of work functions : : : 2 : 4
B
Ratio of work functions : : : 2 : 1
C
is directly proportional to , where is Planck's constant and is the speed of light.
D
The violet colour light can eject photoelectrons from metals 2 and 3.
View Solution 