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PHYSICS MCQs

Total Questions : 1565 | Page 156 of 157 pages
Question 1551. 7. Heat from the sun reaches earth by the process of
  1.    Conduction
  2.    Convection
  3.    Radiation
  4.    All of the above
 Discuss Question
Answer: Option C. -> Radiation
Question 1552. 8. Boyle's law is a relationship between?
  1.    Pressure and volume
  2.    Volume and temperature
  3.    Volume and density
  4.    Pressure and temperature
 Discuss Question
Answer: Option A. -> Pressure and volume
Question 1553. 5. Knot is a measure of?
  1.    The speed of ship
  2.    The curvature of spherical objects
  3.    Solar radiate
  4.    Intensity of earthquake shock
 Discuss Question
Answer: Option A. -> The speed of ship
Question 1554. 6. When the main switch of the house is put off it disconnects the?
  1.    live wire only
  2.    live wire and the earth wire
  3.    live wire and the neutral wire
  4.    earth wire and the neutral wire
 Discuss Question
Answer: Option C. -> live wire and the neutral wire
Question 1555. 4. The device which converts AC to DC is ?
  1.    Oscillator
  2.    Amplifier
  3.    Rectifier
  4.    None of these
 Discuss Question
Answer: Option C. -> Rectifier
Question 1556. 1. Hydrogen spectrum was first explained by
  1.    Dalton
  2.    Erwin Schrodinger
  3.    Niles Bohr
  4.    Rutherford
 Discuss Question
Answer: Option C. -> Niles Bohr
Question 1557. 0. The sudden fall of atmospheric pressure indicates miltimeters is used to measure?
  1.    fair weather
  2.    storm
  3.    rain
  4.    cold weather
 Discuss Question
Answer: Option B. -> storm
Question 1558. 2. Magnetism in materials is due to?
  1.    electrons at rest
  2.    circular motion of electrons
  3.    protons at rest
  4.    all neutrons at rest
 Discuss Question
Answer: Option B. -> circular motion of electrons
Question 1559. 3. 'Short-sight' in human eye can be corrected by using proper
  1.    convex lens
  2.    concave lens
  3.    cylindrical lens
  4.    bifocal lens
 Discuss Question
Answer: Option B. -> concave lens
Question 1560. 4. What is the reason for twinkling of stars?
  1.    Dispersion of light
  2.    Total internal reflection
  3.    Atmospheric reflection
  4.    Atmospheric refraction
 Discuss Question
Answer: Option D. -> Atmospheric refraction

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