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Direction : Study the following question carefully and choose the right answer.

  • 1.
    A ray of light is incident on a plane mirror at an angle 300 with the normal at the point of incidence. The ray will be deviated from its incidence direction by what angle?
    A. 300 B. 600
    C. 1200 D. None of these

  • 2. Who gave the first evidence of the big-bang theory?
    A. Edwin Hubble B. Albert Einstein
    C. S Chandrasekhar D. Stephen Hawking

  • 3.
    The density of water varies with temperature which helps the aquatic animals to live in cold water. At what temperature is the density of water maximum?
    A. 1C B. 2C
    C. 3C D. 4C

  • 4. Why is it difficult to see through fog?
    A. Rays of light suffer total internal reflection from the fog droplets B. Rays of light are scattered by the fog droplets
    C. Fog droplets absorb light D. The refractive index of fog is extremely high

  • 5.
    Assertion (A) Steam is more harmful for human body than the boiling water in case of burn.

    Reason (R) Boiling water contains more heat than steam.

    Codes:
    A. Both A and R are true and R is the correct explanation of A B. Both A and R are true, but R is not the correct explanation of A
    C. A is true, but R is false D. A is false, but R is true