Dual Nature of Radiation and Matter Quiz 2

Question 1

In a photocell, increasing the intensity of light increases

Accepted Answer

the photoelectric current

Answer

the stopping potential

Answer

the energy of the incident photons

Answer

the maximum kinetic energy of the photoelectrons

Question 2

In a photocell, doubling the intensity of the incident light $(v > v_0 )$ doubles the

Accepted Answer

saturation current

Answer

stopping potential

Answer

threshold frequency

Answer

threshold wavelength

Question 3

In the usual notation, the momentum of a photon is

Accepted Answer

$\frac{h\nu}{c}$

Answer

$h\nu c$

Answer

$\frac{h \lambda}{c}$

Answer

$h \lambda c$

Question 4

The momentum of a photon with $\lambda$ = 3315 &Aring; is

Accepted Answer

$2\times 10^{-27} kg.m/s$

Answer

$5\times 10^{-27} kg.m/s$

Answer

$2\times 10^{-41} kg.m/s$

Answer

$5\times 10^{-41} kg.m/s$

Question 5

Let p and E denote the linear momentum and energy of emitted photon, respectively. If the wavelength of incident radiation is increased,

Accepted Answer

both p and E decrease.

Answer

both p and E increases

Answer

p increases and E decreases

Answer

p decreases and E increases

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