# Dual Nature Of Radiation And Matter

## Einstein’s photoelectric equation states that, In this equation refers to :

A
Kinetic energy of all ejected electrons
B
Mean kinetic energy of emitted electrons
C
Minimum kinetic energy of emitted electrons
D
Maximum kinetic energy of emitted electrons
View Solution ## The process of photoelectric emission depends on

A
Temperature of incident light
B
Nature of surface
C
Speed of emitted photo electrons
D
Speed of the incident light
View Solution ## The best suitable metal for photoelectric effect is:

A
Iron
B
Steel
C
Aluminium
D
Cesium
View Solution ## Work function is the energy required

A
To excite an atom
B
To produce X-rays
C
To eject an electron just out of the surface
D
To explode the atom
View Solution ## Threshold wavelength depends on

A
B
Work function of the substance
C
Velocity of electrons
D
Energy of electrons
View Solution ## If Planck’s constant is denoted by h and electronic charge by e, then photoelectric effect allows determination of:

A
Only h
B
Only e
C
Both h and e
D
Only h/e
View Solution ## The Einstein’s photo-electric equation is based upon the conservation of

A
Mass
B
Momentum
C
Angular momentum
D
Energy
View Solution ## De-Broglie wavelength depends on

A
Mass of the particle
B
Size of the particle
C
Material of the particle
D
Shape of the particle
View Solution ## The momentum of a proton is p. The corresponding wavelength is

A
h/p
B
hp
C
p/h
D
View Solution ## The work function of a metal

A
Is different for different metals
B
Is the same for all the metals
C
Depends on the frequency of the light
D
Depends on the intensity of the incident light
View Solution 