All Courses
Get the App Signup / Login
Sign in Open App
CUET Humanities Exam  >  CUET Humanities Tests  >  Agriculture Practice Tests: CUET Preparation  >  Test: Dual Nature of Radiation and Matter - 2 - CUET Humanities MCQ

Test: Dual Nature of Radiation and Matter - 2 - CUET Humanities MCQ


Test Description

10 Questions MCQ Test Agriculture Practice Tests: CUET Preparation - Test: Dual Nature of Radiation and Matter - 2

Test: Dual Nature of Radiation and Matter - 2 for CUET Humanities 2025 is part of Agriculture Practice Tests: CUET Preparation preparation. The Test: Dual Nature of Radiation and Matter - 2 questions and answers have been prepared according to the CUET Humanities exam syllabus.The Test: Dual Nature of Radiation and Matter - 2 MCQs are made for CUET Humanities 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Dual Nature of Radiation and Matter - 2 below.
Solutions of Test: Dual Nature of Radiation and Matter - 2 questions in English are available as part of our Agriculture Practice Tests: CUET Preparation for CUET Humanities & Test: Dual Nature of Radiation and Matter - 2 solutions in Hindi for Agriculture Practice Tests: CUET Preparation course. Download more important topics, notes, lectures and mock test series for CUET Humanities Exam by signing up for free. Attempt Test: Dual Nature of Radiation and Matter - 2 | 10 questions in 10 minutes | Mock test for CUET Humanities preparation | Free important questions MCQ to study Agriculture Practice Tests: CUET Preparation for CUET Humanities Exam | Download free PDF with solutions
Test: Dual Nature of Radiation and Matter - 2 - Question 1
Save

Work function of a metal is 5.2 × 10–18. Its threshold wavelength will be

Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 1

Work function W = hc/λ
λ = hc/W

=  = 376.4Å

Test: Dual Nature of Radiation and Matter - 2 - Question 2
Save

Which one of the following graphs represents the variation of maximum kinetic energy (Ek) of the emitted electrons with frequency (v) in photoelectric effect correctly?

Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 2

According to photoelectric equation,
Ek = hv — hv0
From the equation, we can conclude that the graph of Ek vs v is a straight line with positive slope (h) and negative intercept (hv0).
∴ Graph (4) represents the variation of Ek with v correctly.

Clear all your doubts with EduRev
Test: Dual Nature of Radiation and Matter - 2 - Question 3
Save

The work functions of metals A, B and C are 1.92 eV, 2.0 eV and 5 eV, respectively. According to Einstein's equation, which metal(s) will emit the photoelectrons for a radiation of wavelength 4100 Å?

Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 3

Test: Dual Nature of Radiation and Matter - 2 - Question 4
Save

There are n1 photons of frequency v1 in a beam of light. In an equally energetic beam, there are n2 photons of frequency v2. The correct relation is
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 4

Test: Dual Nature of Radiation and Matter - 2 - Question 5
Save

A metal has work function 3.31 eV. It is illuminated by light of wavelength 3 x 10-7m.What is the threshold frequency for photoelectric emission? ( Take h = 6.62 ×10-34 J s)
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 5

Work function is given by
W = hv0

Test: Dual Nature of Radiation and Matter - 2 - Question 6
Save

Threshold wavelength for photoelectric emission, from a metal surface, is 5200 Å. Photoelectrons will be emitted when this surface is illuminated with monochromatic radiation from
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 6

λ0 = 5200 × 10− 10 m
Photo electrons will be emitted if the incident radiations has a wavelength less than λ0
∴ UV lamp emits radiation of wavelength less than 5200 × 10− 10 m

Test: Dual Nature of Radiation and Matter - 2 - Question 7
Save

A radio transmitter operates on a wavelength of 1500 m at a power of 400 kilowatt. The energy of the radio photon (in joules) is
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 7

According to Planck's quantum theory, a source of radiation emits energy in the form of photons, which travel in straight line.
The energy of photon is E = hv = hc/λ 
Hence, energy of radio photon is E = 6.6 × 10-34 × 2 × 105 J

∴ E = 1.32 × 10-28 J

Test: Dual Nature of Radiation and Matter - 2 - Question 8
Save

A metal whose work function is 3.31 eV is illuminated by light of wavelength 3  10-7 m. What is the threshold frequency for photoelectric emission? (Take h = 6.62 x 10-34 Js)
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 8

The threshold frequency v0 is given by 
v0 = W0/h

Test: Dual Nature of Radiation and Matter - 2 - Question 9
Save

A light having wavelength 300 nm falls on a metal surface. Work function of metal is 2.54 eV. What is the stopping potential?
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 9

Energy of photon = 1243/300 = 4.14eV 
work function = 2.54eV
Kinetic energy = 4.14-2.54 = 1.60eV
stopping potential = 1.6v

Test: Dual Nature of Radiation and Matter - 2 - Question 10
Save

Relation between wavelength of photon and electron of same energy is
Detailed Solution for Test: Dual Nature of Radiation and Matter - 2 - Question 10

Wavelength  λ = hc/p
 
Mass of photon is less than that of electron.
Wavelength is inversely proportional to the mass.
 Wavelength of photon is greater than that of electron.
Hence, λph > λe.

31 tests
Join Course
Information about Test: Dual Nature of Radiation and Matter - 2 Page
In this test you can find the Exam questions for Test: Dual Nature of Radiation and Matter - 2 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Dual Nature of Radiation and Matter - 2, EduRev gives you an ample number of Online tests for practice
Download as PDF

Important Questions for Dual Nature of Radiation and Matter - 2

Find all the important questions for Dual Nature of Radiation and Matter - 2 at EduRev.Get fully prepared for Dual Nature of Radiation and Matter - 2 with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Dual Nature of Radiation and Matter - 2 syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Dual Nature of Radiation and Matter - 2 resources.

Dual Nature of Radiation and Matter - 2 MCQs with Answers

Prepare for the Dual Nature of Radiation and Matter - 2 within the CUET Humanities exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Dual Nature of Radiation and Matter - 2 Agriculture Practice Tests: CUET Preparation

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Dual Nature of Radiation and Matter - 2 with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup