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PHYSICS MCQs

Total Questions : 3767 | Page 9 of 377 pages
Question 81. If the distance between Sun and Earth becomes double, then the gravitational force on Earth will be
  1.    Double
  2.    Same
  3.    Half
  4.    One Fourth
 Discuss Question
Answer: Option D. -> One Fourth
Question 82. The large collection of stars, dust and gas held together by gravitational attraction between components is known as
  1.    Cluster
  2.    Atmosphere
  3.    Galaxy
  4.    Sun Family
 Discuss Question
Answer: Option C. -> Galaxy
Question 83. A person can jump higher on the moon's surface than on the earth because :
  1.    The moon's surface is rough
  2.    The acceleration due to gravity in moon is smaller than that on the earth.
  3.    The moon is cooler than earth
  4.    The moon has no atmosphere
 Discuss Question
Answer: Option B. -> The acceleration due to gravity in moon is smaller than that on the earth.
Question 84. The velocity required to place a vehicle in orbit around the moon is ________ that required to place it in orbit round the earth.
  1.    Less than
  2.    Greater than
  3.    Equal to
  4.    Greater than or equal to
 Discuss Question
Answer: Option A. -> Less than
Question 85. Which measurement depends on gravitational force?
  1.    Mass
  2.    Weight
  3.    Height
  4.    All of the above
 Discuss Question
Answer: Option B. -> Weight
Question 86. What is the minimum escape velocity of rocket to be launched into space ?
  1.    5 Km/Sec.
  2.    6 Km/Sec.
  3.    11 Km/Sec.
  4.    15 Km/Sec.
 Discuss Question
Answer: Option C. -> 11 Km/Sec.
Question 87. The period of revolution of a geostationary satellite is
  1.    365 days
  2.    30 days
  3.    24 hours
  4.    Changing continuously
 Discuss Question
Answer: Option C. -> 24 hours
Question 88. The laws which govern the motion of planets are called ________
  1.    Newton's Laws
  2.    Kepler's Laws
  3.    Avogadro's laws
  4.    De Morgan's Laws
 Discuss Question
Answer: Option B. -> Kepler's Laws
Question 89. Who gave the Theory of Relativity?
  1.    Isaac Newton
  2.    Archimedes
  3.    Albert Einstein
  4.    Galileo Galilei
 Discuss Question
Answer: Option C. -> Albert Einstein
Question 90. What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
  1.    18 km/sec
  2.    11.2 km/sec
  3.    21 km/sec
  4.    35 km/sec
 Discuss Question
Answer: Option B. -> 11.2 km/sec

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