12th Board Physics Model Paper: 12th students should check Physics Model Paper, exam will be easy

12th Board Physics Model Paper: Jharkhand Board 12th students should start their exam preparation according to the model paper. JACK board has released the model paper for this on their official website. In this order, today we have brought Physics model paper for class 12th students. This will make the exam easier and increase the chances of getting good marks in the exam.

Model Question Paper
Model Question Paper
Set- 3

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Section A
1. Name the phenomenon that shows the quantum nature of electromagnetic radiation?
Name the phenomenon that reflects the quantum nature of electromagnetic radiation?

2. Define the terms in relation to the phenomenon of cut off voltage and photoelectric effect.
Define cut off voltage with reference to the phenomenon of photoelectric effect.

3. How AND gate is realized from NAND gate. From what and how NAND gates are made.

4. How does doping change the energy gap in a pure semiconductor?
How does the energy gap change with doping in a pure semiconductor?

5. Do electromagnetic waves carry energy and momentum?
Do electromagnetic waves accelerate?

6. An astronomical telescope has two lenses of power 10D and 1D. What is its magnifying power?
An astronomical telescope has two lenses of power 10D and 1D. What are its magnifying powers?

7. What is the phase difference between two points in the wavefront?
What is the phase difference between two points on the wavefront?

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Section B
8. The work function of cesium metal is 2.14 eV, when light of frequency 6X1014 Hz is incident on the surface of the metal photoemission of electrons occurs. What is the maximum kinetic energy of the emitted electron?

The work function of cesium metal is 2.14 eV, electrons emit light when light of frequency 6X10^14 Hz is on the surface of the metal. What is the maximum kinetic energy of the emitted electron?

9. Draw the circuit diagram, how zener diode is used as a voltage regulator?
Draw a circuit diagram showing how a zener diode is used as a voltage regulator.

10. Identify which part of the electromagnetic spectrum is used
(i) To photograph the sky at night and in foggy conditions
(ii) To study crystal structure
(iii) in the treatment of cancer
Identify which part of the electromagnetic spectrum is used.
(i) Taking photographs of the sky at night and in fog
(ii) To study crystal structure
(iii) in the treatment of cancer

11. With the help of labeled diagram, briefly explain the principle and working of step-up transformer.
Briefly explain the principle and working of step-up transformer with the help of labeled diagram.

12.Differentiate between conductors, semiconductors and insulators with the help of energy bands.
Differentiate between conductors, semiconductors and insulators with the help of energy band diagrams.

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