Airforce Group X 2020 Paper with Answer key 07 November

About this paper

This is a memory-based recollection of the Indian Air Force Airmen Group X exam held on 7 November 2020, not an official question paper, and this copy is the Hindi version. Of its 70 questions, the 20 English questions are missing: each shows only the line 'Question doesnt exist for :hn'. Questions 21–45 (Physics) and 46–70 (Mathematics) are printed in Hindi, and an answer key gives the correct option for all 70. The questions below are translated from Hindi. Physics covers units, friction, escape velocity, logic gates, Carnot engines and electromagnetic waves; Maths covers sets, limits, calculus, circles, progressions, probability, determinants and inverse trigonometry.

Exam

Airforce Group X

Subject

Airforce Group X

Year

2020

Pages

13

Answers included

Yes

Paper pattern

• Questions 1–20

  English: not shown in this copy, only placeholder lines

• Questions 21–45

  Physics, in Hindi

• Questions 46–70

  Mathematics, in Hindi

Topics covered

• Units and dimensions
• Laws of motion and friction
• Gravitation and escape velocity
• Logic gates
• Thermodynamics and Carnot engine
• Photoelectric effect
• Electromagnetic waves
• Sets
• Limits, differentiation and integration
• Circles
• Arithmetic progressions
• Probability and determinants

Questions from this paper

1. A Carnot heat engine has a sink temperature of 50 °C and an efficiency of 50%. Find the temperature of the heat source.
2. The change in internal energy of 2 moles of a gas is −10 J. If the process is adiabatic, find the work done on the gas.
3. Choose the correct relation between the force F, velocity v and power P of a body.
4. If y = e²ˣ, what is d²y/dx² equal to?
5. What is the radius of the circle x² + y² + 4x + 4y + 4 = 0?
6. The sum of n terms of an arithmetic progression is 300, its first term is 10 and its last term is 50. Find n.