Objective Physics Questions and Answers - Set 13 - ObjectiveBooks

Objective Physics Questions and Answers - Set 13

GK Practice Test: Question Set - 13

1. The 23½° South latitude is known as
    (A) The Tropic of Cancer
    (B) The Tropic of Capricorn
    (C) The Equator
    (D) The Prime Meridian

2. A man weighing 65 kg jumps from a 100 ft high building with a load of 35 kg. What wlii be the load experienced by him?
    (A) 20 kg
    (B) 100 kg
    (C) 200 kg
    (D) Zero

3. The universal law of gravitation was propounded by
    (A) Kepler
    (B) Galileo
    (C) Newton
    (D) Copernicus

4. Summer solstice occurs in the Southern hemisphere
    (A) December 22
    (B) January 22
    (C) February 22
    (D) February 28

5. Microphone is used to convert
    (A) Sound waves into electrical energy
    (B) Sound waves into light rays
    (C) Electrical energy into sound waves
    (D) Sound waves into magnetic currents

6. Steel is more elastic than Rubber because
    (A) Its density is high
    (B) It is a metal
    (C) Ratio of stress to strain is more
    (D) Ratio of stress to strain is less

7. Pressure cooker cooks rice faster because
    (A) It always lets the steam escape
    (B) High pressure crushes the hard covering of rice grains
    (C) It does not let the heat energy escape easily
    (D) High pressure raises the boiling point of water

8. The clear sky looks blue because
    (A) Reflection of light
    (B) Refraction of light
    (C) Diffraction of light
    (D) Dispersion of light

9. The main reserves of phosphorus in the biosphere is in the
    (A) Hydrosphere
    (B) Atmosphere
    (C) Lithosphere
    (D) Troposphere

10. The normal threshold of hearing is around
    (A) 60-80 db
    (B) 45-60 db
    (C) 100-120 db
    (D) 25-45 db

11. Ozone hole refers to
    (A) Hole in ozone layer
    (B) Decrease in the ozone layer in troposphere
    (C) Decrease in thickness of ozone layer in stratosphere
    (D) Increase in the thickness of ozone layer in troposphere

12. Super conductivity is a phenomenon in which the resistance of a substance
    (A) Increases with temperature
    (B) Decreases with temperature
    (C) Does not change with temperature
    (D) Becomes zero at very low temperature

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