Assignment

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Embibe Experts Physics Solutions for Exercise - Assignment

Simple step-by-step solutions to Assignment questions of Dual Nature of Radiation and Matter from Gamma Question Bank for Engineering Physics. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Assignment with Hints & Solutions

MEDIUM
JEE Main/Advance
IMPORTANT

A metal surface is irradiated by light of wavelength,λ=200 nm. The most energetic emitted photoelectrons are bent in a circle of radius 2 m by a magnetic field of 3.02×10-6 T perpendicular to the velocity. Then

EASY
JEE Main/Advance
IMPORTANT

A point source of light emitting power W is placed inside at the center of a soap bubble of radius R. Surface of soap bubble is perfectly absorbing and P0 is the atmospheric pressure. If PR is the radiation pressure on the surface of soap bubble due to point source and Pi is the net pressure inside the soap bubble having surface tension T, then choose the correct answer  c is the speed of light)

MEDIUM
JEE Main/Advance
IMPORTANT

A beam of light of intensity I is incident on a plane mirror and get reflected fully as shown in figure. The pressure exerted by beam on the mirror is (c : speed of light)

Question Image

EASY
JEE Main/Advance
IMPORTANT

A photosensitive metal plate is exposed to a monochromatic light beam of frequency which is more than threshold frequency. Then plot of dNdK versus K, is best represented by [N= No. of photoelectrons, K= kinetic energy of photoelectron]

EASY
JEE Main/Advance
IMPORTANT

A metal surface is illuminated by light of two different wavelengths λ1=500 nm and λ2=620 nm. The maximum speed of ejected photoelectrons corresponding to these wavelengths are in the ratio 3: 2. Then work function of the metal is nearly

EASY
JEE Main/Advance
IMPORTANT

When a metal surface is illuminated with a radiation of wavelength λ1, the maximum kinetic energy of photoelectrons emitted is K. When the same surface is illuminated by radiation of wavelength λ2, the maximum kinetic energy of photoelectrons become 3 K. Then

MEDIUM
JEE Main/Advance
IMPORTANT

When a metallic surface is illuminated with monochromatic light of wavelength λ, the stopping potential is 5V0. When the same surface is illuminated with light of wavelength 3λ, the stopping potential is V0. If work function of the metallic surface is hcNλ, then value of N is

EASY
JEE Main/Advance
IMPORTANT

When light of wavelength λ is incident on a metal surface, the stopping potential is found to be V0. When light of wavelength λn is incident on the same metal surface, the stopping potential is found to be n2V0. The cut off wavelength for the metal is given by