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Class 12 Physics: Dual Nature of Radiation and Matter — Chapter Test 1

Class 12 • Physics • Dual Nature of Radiation and Matter • Chapter Test

MediumFREE

15

Questions

20 min

Duration

15

Marks (1 each)

No

Negative marking

Original practice questions with full solutions by ExamPortal.

Instructions

  • • Read each question carefully and pick the correct answer.
  • • You can mark questions for review and come back to them.
  • • Answers are saved automatically.
  • • The test is submitted automatically when time runs out.

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SYLLABUS & QUESTION BLUEPRINT

Sample Practice Questions

Preview 5 sample questions from this 15-question test. Test your knowledge below or take the full exam in timed CBT mode.

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Question 1 of 15
Einstein's photoelectric equation is:
A
Kmax=hν+ϕK_{max} = h\nu + \phi
B
Kmax=hν−ϕK_{max} = h\nu - \phi
C
Kmax=hνK_{max} = \frac{h}{\nu}
D
Kmax=ϕ−hνK_{max} = \phi - h\nu
View Correct Answer & Step-by-Step Solution
Correct Option:(B)Kmax=hν−ϕK_{max} = h\nu - \phi

Detailed explanation is available inside the official test attempt review.

Question 2 of 15
The energy of a photon of frequency ν\nu is:
A
hν\frac{h}{\nu}
B
hνh\nu
C
νh\frac{\nu}{h}
D
hν2h\nu^2
View Correct Answer & Step-by-Step Solution
Correct Option:(B)hνh\nu

Detailed explanation is available inside the official test attempt review.

Question 3 of 15
The de Broglie wavelength of a particle with momentum pp is:
A
hphp
B
hp\frac{h}{p}
C
ph\frac{p}{h}
D
hp2\frac{h}{p^2}
View Correct Answer & Step-by-Step Solution
Correct Option:(B)hp\frac{h}{p}

Detailed explanation is available inside the official test attempt review.

Question 4 of 15
The photoelectric effect is not observed below a certain frequency called the:
A
resonant frequency
B
threshold frequency
C
natural frequency
D
cut-off wavelength only
View Correct Answer & Step-by-Step Solution
Correct Option:(B)threshold frequency

Detailed explanation is available inside the official test attempt review.

Question 5 of 15
Increasing the intensity of light (above threshold frequency) increases the:
A
maximum kinetic energy of photoelectrons
B
number of photoelectrons emitted per second
C
threshold frequency
D
work function
View Correct Answer & Step-by-Step Solution
Correct Option:(B)number of photoelectrons emitted per second

Detailed explanation is available inside the official test attempt review.

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Frequently asked questions

How many questions are there in Class 12 Physics: Dual Nature of Radiation and Matter — Chapter Test 1?

There are 15 questions to answer in 20 min. Each correct answer gives 1 mark, for a total of 15 marks.

Is there negative marking?

No. Wrong answers do not lose marks, so attempt every question.

Is this mock test free?

Yes, it is completely free. Just log in with your email to start.

What does this test cover?

It covers the chapter "Dual Nature of Radiation and Matter" of Class 12 Physics. All questions are original, with a full solution for each.

Will I see my result and the solutions?

Yes. Right after you submit you get your score, accuracy, rank and percentile, and you can review every question with the correct answer and a step-by-step explanation.

Can I take this test again?

Yes, you can retake it as many times as you like and compare your scores.