One Liner Physics GK Questions for Competitive Exams

One Liner Physics GK Questions
1. In which technology do Cryogenic engines find applications? – Rocket technology
2. What denotes the smallest temperature? – 1° on the Kelvin scale
3. When temperature is gradually decreased, what is the specific heat of substance? – Decreased
4. Total internal reflection of light is possible when light enters from which thing? – Water to air
5. What is a suitable unit for expressing electric field strength? – N/C
6. Which energy of the electron at absolute zero is called? – Fermi energy
7. What is the wavelength of visible spectrum? – 3900-7600 A
8. What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? – It will stop altogether
9. When some detergent is added to water, what will be the surface tension? – Increases
10. There is no net transfer of energy by the particles of the medium in which waves? – Stationary waves
11. Where will be the Time period in a vibration magnetometer infinite? – At magnetic pole
12. Which is used as a coolant in nuclear reactors? – Liquid sodium
13. Sound travels faster in which thing? – Iron than in air
14. What minimum number of non-zero non-collinear vectors is required to produce a zero vector? – 3
15. Which mirror is to be used to obtain a parallel beam of light from a small lamp ? – Concave mirror
16. If a material, placed in a magnetic field is thrown out of it, then how is the material? – Diamagnetic
17. ‘mho’ is the unit of which unit? – Specific resistance
18. The escape velocity from the surface of the earth does not depend on which body? – Mass of the body
19. With the rise of temperature, what happens in the speed of sound in a gas? – Increases
20. The resistance of material increases with temperature. What is this? – Metal
21. Which rays will deflect in electric field? – Cathode rays
22. Which purified oil does Aviation fuel for jet aeroplanes consist? – Kerosene
23. Through which material does sound travel slowest? – Wood
24. The first law of thermodynamics is concerned with the conservation of which thing? – Energy
25. A soap bubble is given negative charge then what happen in its radius? – Increases


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