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QUIZ 2:Photoelectric Effect(#freetestseries)


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15 Questions MCQ Test | QUIZ 2:Photoelectric Effect(#freetestseries)

QUIZ 2:Photoelectric Effect(#freetestseries) for JEE 2022 is part of JEE preparation. The QUIZ 2:Photoelectric Effect(#freetestseries) questions and answers have been prepared according to the JEE exam syllabus.The QUIZ 2:Photoelectric Effect(#freetestseries) MCQs are made for JEE 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for QUIZ 2:Photoelectric Effect(#freetestseries) below.
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QUIZ 2:Photoelectric Effect(#freetestseries) - Question 1

The idea of matter waves was given by

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 2

Wave is associated with matter

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 3

The de-Broglie wavelength associated with the particle of mass m moving with velocity v is [CBSE PMT 1992]

Detailed Solution for QUIZ 2:Photoelectric Effect(#freetestseries) - Question 3

The de-Broglie wavelength associated with with the particle of mass m moving with velocity v is 

λ=h/p​=h/mv​

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 4

A photon, an electron and a uranium nucleus all have the same wavelength. The one with the most energy [MP PMT 1992]

Detailed Solution for QUIZ 2:Photoelectric Effect(#freetestseries) - Question 4

A is the correct answer.
p = h/λ
p = √2mK
E ∝ 1/m
Since photon has minimum mass so it has maximum KE

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 5

 When the kinetic energy of an electron is increased, the wavelength of the associated wave will

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 6

If the de-Broglie wavelengths for a proton and for a α−particle are equal, then the ratio of their velocities will be [NCERT 1972]

Detailed Solution for QUIZ 2:Photoelectric Effect(#freetestseries) - Question 6

 

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 7

A particle which has zero rest mass and non-zero energy and momentum must travel with a speed [MP PMT 1992; DPMT 2001; Kerala PMT 2004]

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 8

 Dual nature of radiation is shown combinedly by [MP PET 1991]

Detailed Solution for QUIZ 2:Photoelectric Effect(#freetestseries) - Question 8

 

{Photoelectric effect →Particle nature Diffraction→Wave nature}Dual nature

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 9

For the Bohr's first orbit of circumference 2πr, the de-Broglie wavelength of revolving electron will be [MP PMT 1987]

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 10

 An electron of mass m when accelerated through a potential difference V has de-Broglie wavelength λ. The de-Broglie wavelength associated with a proton of mass M accelerated through the same potential difference will be [CBSE PMT 1995; EAMCET 2001; J & K CET 2004]

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 11

 What will be the ratio of de-Broglie wavelengths of proton and α−particle of same energy [RPET 1991, 96; DCE 2002; Kerala PET 2005]

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 12

What is the de-Broglie wavelength of the α−particle accelerated through a potential difference V [RPMT 1996]

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 13

The energy that should be added to an electron, to reduce its de-Broglie wavelengths from 10-10 m to 0.5×10​-10m, will be [KCET (Engg./Med.) 2000]

Detailed Solution for QUIZ 2:Photoelectric Effect(#freetestseries) - Question 13

λ = h/√2mE
λ' = λ/2
λ'= h/√2mE'
then [λ/2]/λ = (√E'/E)
E' = 4E
Additional energy= 4E - E = 3E.

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 14

If particles are moving with same velocity, then maximum de-Broglie wavelength will be for [CBSE PMT 2002]

QUIZ 2:Photoelectric Effect(#freetestseries) - Question 15

 If an electron and a photon propagate in the form of waves having the same wavelength, it implies that they have the same [CBSE PMT 1995; DCE 2001; AIIMS 2003]

Detailed Solution for QUIZ 2:Photoelectric Effect(#freetestseries) - Question 15
  •     If an electron and a photon propagates in the form of waves having the same wavelength, it implies that they have same momentum. This is according to de-Broglie equation, 

    p∝1/λ

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