Airforce Group X 2021 Paper with Answer key 15 July
Airforce Group X
Airforce Group X2021Memory-based Airforce Group X paper from 15 July 2021, Shift 1: 70 questions on Physics, Maths and English, with the correct option given for each.
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About this paper
This is the Indian Air Force Airmen Group X paper for 15 July 2021 (Shift 1), marked 'MBT' (memory-based test) on its cover, so it is a recollection rather than an official question booklet. Its 70 multiple-choice questions run 1–25 Physics, 26–50 Mathematics and 51–70 English, with the correct option printed under each question. Physics includes units and dimensions, elasticity, impulse, a Carnot cycle, ray optics, internal resistance and electromagnetic waves; Maths includes determinants, complex numbers, probability, integration, the area of a triangle from its medians, ellipses and parabolas. The English part has a four-question passage on WHO's coronavirus research effort plus voice, narration, error spotting and vocabulary items. No marks or time limit are printed.
- Exam
- Airforce Group X
- Subject
- Airforce Group X
- Year
- 2021
- Questions
- 70
- Pages
- 15
- Answers included
- Yes
Paper pattern
Questions 1–25
Physics
Questions 26–50
Mathematics
Questions 51–70
English: voice, narration, prepositions, error spotting, spelling, vocabulary, a reading passage and idioms
Topics covered
- Units and dimensions
- Elasticity
- Work, energy and impulse
- Thermodynamics and Carnot cycle
- Ray optics
- Current electricity
- Electromagnetic waves and communication
- Matrices and determinants
- Complex numbers
- Probability
- Calculus
- Conic sections
Questions from this paper
- An ideal gas heat engine operates in a Carnot cycle between 227 °C and 127 °C and absorbs 6 × 10⁴ J at the higher temperature. How much heat is converted into work?
- A battery of emf 4 V and internal resistance 2 Ω is connected to a 7 Ω resistor. What current flows in the circuit?
- A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of deviation produced by the mirror?
- The lengths of the three medians of a triangle are 9 cm, 12 cm and 15 cm. What is the area of the triangle?
- Find the equation of the parabola with focus at (3, 0) and directrix x = −3.
- Change the voice: They have built a perfect dam across the river.
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