AP EAPCET 2024 - 23th May Morning Shift | Dual Nature of Radiation Question 1 | Physics

A photon incident on a metal of work function 2 eV produced photoelectron of maximum kinetic energy of 2 eV . The wavelength associated with the photon is

$6200 \mathop {\rm{A}}\limits^{\rm{o}}$

$3100 \mathop {\rm{A}}\limits^{\rm{o}}$

$9300 \mathop {\rm{A}}\limits^{\rm{o}}$

$2000 \mathop {\rm{A}}\limits^{\rm{o}}$

AP EAPCET 2024 - 22th May Evening Shift

MCQ (Single Correct Answer)

-0

Light of wavelength $4000\mathop {\rm{A}}\limits^{\rm{o}}$ is incident on a sodium surface for which the threshold wavelength of photoelectrons is $5420 \mathop {\rm{A}}\limits^{\rm{o}}$. The work function of sodium is

4.58 eV

2.29 eV

1.14 eV

0.57 eV

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

The surface of a metal is first illuminated with a light of wavelength 300 nm and later illuminated by another light of wavelength 500 nm . It is observed that the ratio of maximum velocities of photoelectrons in two cases is 3 . The work function of metal value is close to

6.48 eV

1.23 eV

4.17 eV

2.28 eV

AP EAPCET 2024 - 21th May Evening Shift

MCQ (Single Correct Answer)

-0

The maximum wavelength of light which causes photoelectric emission from photosensitive metal surface is $\lambda_0$. Two light beams of wavelengths $\frac{\lambda_0}{3}$ and $\frac{\lambda_0}{9}$ incident on the metal surface. The ratio of the maximum velocities of the emitted photoelectrons is

$3: 4$

$1: 3$

$1: 2$

$2: 3$

AP EAPCET Subjects