Wednesday, May 13, 2015

SSC CGL 2015: Physics Quiz with Answers & Explanation

Hello Readers,

SSC CGL 2015 Tier-1 exam will be conducted in the month of August which is obviously not too far away. This is the time to strengthen your weak sections and assess your knowledge in all sections. Today, we are providing you a quiz on physics with a motive to help you.

Answers are given at the end of this post along with explanation.

1. Where are mesons found?
  1. Cosmic rays
  2. X-rays
  3. Gamma rays
  4. Laser Beam
2. Plants are dried up in winter due to frost because
  1. Evaporation does not take place
  2. Photosynthesis does not take place at such low temperature.
  3. Respiration does not take place at low temperature.
  4. There is mechanical loss of tissues and drought condition prevails.

3. For a body moving with non-uniform velocity and uniform acceleration
  1. Displacement - Time graph is linear
  2. Displacement- Time graph is non-linear
  3. Velocity - Time graph is non-linear
  4. Velocity - Time graph is linear
 4. The fourth state of matter is known as
  1. Gas
  2. Vapour
  3. Plasma
  4. Electrons
 5.Which of the following laws validates the statement that matter can neither be created nor destroyed?
  1. Law of conservation of energy
  2. Le Chatelier's Principle
  3. Law of conservation of mass
  4. Law of osmosis
6.Decibel is the unit used for
  1. Speed of light
  2. Intensity of heat
  3. Intensity of sound
  4. Radio wave frequency
7.The term "Isoneph" indicates the lines of equal
  1. Cloudiness
  2. Salinity
  3. rainfall
  4. pressure
8."Cryogenics" is a science dealing with
  1. high temperatures
  2. low temperatures
  3. friction and wear
  4. growth of crystals
9.The mass-energy relation is the outcome of
  1. quantum theory
  2. general theory of relativity
  3. field theory of energy
  4. special theory of relativity
10.Which of the following are used for accurately measuring very small time intervals?
  1. Pulsars
  2. Quartz clocks
  3. Atomic clocks
  4. White dwarfs

Answers with Explanation
  1. (1) Mesons are not produced by radioactive decay, but appear in nature only as short-lived products of very high-energy interactions in matter, between particles made of quarks. In cosmic ray interactions, for example, such particles are ordinary protons and neutrons. Mesons are hadronic subatomic particles composed of one quark and one anti-quark bound together by the strong interaction. Because mesons are composed
  2. (4)
  3. (2)
  4. (3)
  5. (3)
  6. (3)
  7. (1)
  8. (2)
  9. (4)
  10. (3)

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