A. Force and Power
B. Work and Power
C. Work and Energy
D. Momentum and Power
Answer –C. Work and Energy
Explanation-
12. The source of the sun’s energy is the process of: [SSC Income Tax Assistant 2006]
A. photoelectric emission
B. nuclear fission
C. nuclear fusion
D. thermionic emission
Answer –C. nuclear fusion
Explanation-
13. The period of revolution of a geostationary satellite is – [SSC CPO Sub-Inspector 2010]
A. 365 days
B. 30 days
C. 24 hours
D. changing continuously
Answer –C. 24 hours
Explanation-
14. Which of the following events occurred first? [SSC Combined Matric Level (PRE) 2002]
A. Albert Einstein propounded the General Theory of Relativity
B. Max Planck unveiled the Quantum Theory
C. Marconi first transmitted a wireless signal
D. Madame Marie Curie became the first woman Nobel Prize winner
Answer –B. Max Planck unveiled the Quantum Theory
Explanation-
15. Heat stored in water vapour is : [SSC Combined Matric Level (PRE) 2008]
A. Specific heat
B. Latent heat
C. Absolute heat
D. Relative heat
Answer –B. latent heat
Explanation-
16. The device used for locating submerged objects under sea is – [SSC Data Entry Operator 2008]
A. Sonar
B. Radar
C. Laser
D. Maser
Answer –A. sonar
Explanation-
17. In a nuclear reactor, heavy water is used as : [SSC Data Entry Operator 2008]
A. coolant
B. fuel
C. moderator
D. atomic smasher
Answer –C. moderator
Explanation-
18. A man cannot see clearly beyond 10 meters. The disease,he suffers from: [SSC Stenographer 2010]
A. Far sight
B. Myopia
C. Cataract
D. Hypermetropia
Answer –B. Myopia
Explanation-
19. Which of the following supports particle nature of photons? [SSC CAPFs SI & CISF ASI 2013]
A. Diffraction
B. Polarization
C. Photoelectric effect
D. Interference
Answer –C. Photoelectric effect
Explanation-
20. The word ‘insolation’ means: [SSC CHSL (10+2) 2014]
A. matters which insulate
B. incoming solar radiation
C. insoluble matters
D. None of the above
Answer –B. Incoming solar radiation
Explanation-