CBSE 2016 Physics Question Paper for Class 12

About this paper

This is the CBSE Class 12 Physics (Theory) question paper from the 2016 board examination, Series ONS, Set 2, code 55/2/C. It carries 70 marks over three hours and has 26 compulsory questions in five sections: five one-mark questions, five two-mark questions, twelve three-mark questions, one four-mark value-based question and three five-mark long answers. The value-based question is about a village student, Ram, whose gifted bicycle has a dynamo, and asks for the principle and working of a dynamo. Internal choices are given in one two-mark question, one three-mark question and all three five-mark questions, and the physical constants are printed on the paper. This copy has the questions only, without answers.

Exam

CBSE Class 12

Subject

Physics

Year

2016

Paper code

55/2/C

Maximum marks

70

Time allowed

3 hours

Questions

26

Pages

16

Answers included

No, questions only

Paper pattern

• Section A

  5 marks

  Questions 1–5, one mark each

• Section B

  10 marks

  Questions 6–10, two marks each; internal choice in one

• Section C

  36 marks

  Questions 11–22, three marks each; internal choice in one

• Section D

  4 marks

  Question 23, a four-mark value-based question

• Section E

  15 marks

  Questions 24–26, five marks each, each with an internal choice

Topics covered

• Electrostatics, Gauss's law and capacitors
• Current electricity and drift velocity
• Biot–Savart law and magnetism
• Electromagnetic induction and transformers
• Alternating current
• Electromagnetic waves
• Ray optics and telescopes
• Wave optics and polarisation
• Photoelectric effect and de Broglie waves
• Atoms and nuclei
• Semiconductors and transistors
• Communication systems

Questions from this paper

1. Why does the sun appear red at sunrise and sunset?
2. Calculate the de Broglie wavelength of the electron orbiting in the n = 2 state of the hydrogen atom.
3. State Malus' law. What is the refractive index of a medium whose polarising angle is 60°?
4. For a CE transistor amplifier, the audio signal voltage across the collector resistance of 2 kΩ is 2 V. If the current amplification factor of the transistor is 100, find the input signal voltage and base current when the base resistance is 1 kΩ.
5. Light from a point source in air falls on a convex spherical glass surface of refractive index 1.5 and radius of curvature 20 cm. If the source is 100 cm from the glass surface, at what position is the image formed?
6. How much current is drawn by the primary of a transformer connected to a 220 V supply when it delivers power to a 110 V–550 W refrigerator?