AIPMT 2015 | Dual Nature of Radiation and Matter Question 29 | Physics

A photoelectric surface is illuminated successively by monochromatic light of wavelength $$\lambda $$ and If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material is
(h = Planck's constant, C = speed of light)

$${{2hc} \over \lambda }$$

$${{hc} \over {3\lambda }}$$

$${{hc} \over {2\lambda }}$$

$${{hc} \over \lambda }$$

AIPMT 2015

MCQ (Single Correct Answer)

-1

Light of wavelength 500 nm is incifent on a metal with work function 2.28 eV. The de Broglie wavelength of the emitted electron is

$$ \ge $$ 2.8 $$ \times $$ 10^$$-$$9 m

$$ \le $$ 2.8 $$ \times $$ 10^$$-$$12 m

< 2.8 $$ \times $$ 10^$$-$$10 m

< 2.8 $$ \times $$ 10^$$-$$9 m

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?

AIPMT 2015 Cancelled Paper Physics - Dual Nature of Radiation and Matter Question 73 English Option 1

AIPMT 2015 Cancelled Paper Physics - Dual Nature of Radiation and Matter Question 73 English Option 2

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A certain metallic surface is illuminated with monochromatic light of wavelength, $$\lambda .$$ The stopping potential for photo-electric current for this light is 3V₀. If the same surface is illuminated with light of wavelength 2 $$\lambda $$, the stopping potential is V₀. The threshold wavelength for this surface for photo-electric effect is

$${\lambda \over 4}$$

$${\lambda \over 6}$$

6$$\lambda $$

4$$\lambda $$

Previous Next

NEET Subjects

Biology

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution