dual nature of readiation

Question 1

energy of photon formula

Answer 1

E=h(c/lamda) or E=h(mu)

Question 2

why photocurrent increases with increasing intensity?

Answer 2

The photocurrent is directly proportional to intensity because more photons hit the metal surface, causing more electrons to be emitted

Question 3

work function(w) depends on

Answer 3

material

Question 4

maximum kinetic energy depends on

Answer 4

frequency

Question 5

saturation current

Answer 5

the maximum current at that time when all the photoelectrons emitted from emitter reach the collector plate

Question 6

stopping potential

Answer 6

when the anode is charged -vely such that the collector plate repels the photoelectrons and no photocurrent produced

“the minimum negative voltage applied to the anode to stop the photocurrent”

Question 7

saturation current depends on

Answer 7

intensity of incident radiation

Question 8

stopping potential depends on

Answer 8

frequency

Question 9

stopping potential increases as

Answer 9

frequency increases(because kinetic energy of photoelectron increases)

Question 10

kinetic energy of photoelectron formula

Answer 10

k=h*mu-w(work function)

Question 11

kinetic energy in terms of stopping potential

Answer 11

k=e*V0

Question 12

threshold frequency

Answer 12

the minimum frequency of incident ratiation that can cause electrons to be emitted from a metal surface

Question 13

threshold frequency depends on

Answer 13

nature of material

Question 14

einstein’s equation

Answer 14

E=w(work function)+kinetic energy

Question 15

momentum of a photon

Answer 15

(h*mu)/c

Question 16

de Broglie wavelength formula

Answer 16

lamda=h/(p) where p=mv

Question 17

de broglie wavelength in terms of mass and energy

Answer 17

lamda=h(root 2mk.e) where k.e=q*v or ev