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Statement-1:An isolated and free electro...

Statement-1:An isolated and free electron cannot absorb a photon completely.
Statement-2 : All material particles behave wave like when in motion.
Statement-3: Light of intensity l , falls normally upon a plane mirror (perfectly reflecting surface ). The pressure exerted is `"2l"/c`

A

TFT

B

FFF

C

TTF

D

TTT

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Statement -1: In process of photoelectric emission , all emitted electrons donot have sam Kinetic energy Statement-2: If radiation falling on photosensitive surface of a metal consits of different wavelength, then energy acquired by electrons absorbing photons of different wavelength shall be different.

Statement-1: Light from an objects falls on a concave mirror forming a real image. The complete system is submerged deep inside water then the image will be formed at the same position relative to the mirror. Statement-2: Formation of image by reflection does not depend on surrounding medium, provided it is also formed inside surrounding medium.

Some questions (Assertion-Reason Type) are given below. Each question contains Statement I (Assertion) and statement II(reason). Each question has 4 choices (a),(b),(c ) and (d) out of which only one is correct. So select the correct choise. a. Statement I is True, Statement II is True,Statement II is a correct explanation for Statement I b. Statement I is True, Statement II is True, Statement II is NOT a correct ecplanation for Statement I c. Statement I is True, Statement II is False . d. Statement I is false, Statement II is True. 2. Statement:I Though light of a single frequency (monochromatic light) is incident on a metal, the energies of emitted photoelectrons are different. Statement II: The energy of electrons just after they absorb photons incident on the metal surface may be lost in collision with other atoms in the metal before the electron is ejected out of the metal.

This question has a paragraph followed by two statements, Statement - 1 and Statement - 2. Of the given four alternatives after the statements, choose the one that describes the statements. A thin air film is formed by putting the convex surface of a plane-convex lens over a plane glass plate. With monochromatic light, this film gives an interference pattern due to light reflected from the top (convex) surface and the bottom (glass plate) surface of the film. Statement - 1: When light reflects from the air-glass plate interface, the reflected wave suffers a phase change of pi . Statement - 2 : The centre of the interference pattern is dark.

Statement 1: Though light of a single frequency (monochromatic light) is incident on a metal, the kinetic energies of emitted photoelectrons are not equal. Statement 2: The energy of electrons just after they absorb photons incident on metal surface may be lost in collision with other atoms in the metal before the electron is ejected out of the metal.

AAKASH INSTITUTE-DUAL NATURE OF RADIATION AND MATTER -ASSIGNMENT SECTION H.Multiple True-False
  1. Statement-1:An isolated and free electron cannot absorb a photon compl...

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