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PHYSICS MCQs

Total Questions : 3767 | Page 10 of 377 pages
Question 91. The height of a geo-stationary satellite from the Earth's surface is approximately :
  1.    36,000 km
  2.    42,000 km
  3.    30,000 km
  4.    None of these
 Discuss Question
Answer: Option A. -> 36,000 km
Question 92. Why is weightlessness experienced while orbiting the earth in space ships ?
  1.    Inertia
  2.    Acceleration
  3.    Zero gravity
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 93. The instrument used to see the distant objects on the Earth is
  1.    Terrestrial telescope
  2.    Astronomical telescope
  3.    Compound microscope
  4.    Simple microscope
 Discuss Question
Answer: Option A. -> Terrestrial telescope
Question 94. In the case of bodies falling under gravity which of the following remains constant at a given place?
  1.    Kinetic energy
  2.    Potential energy
  3.    Acceleration
  4.    All the above
 Discuss Question
Answer: Option C. -> Acceleration
Question 95. Intensity of gravitational field of earth is maximum at
  1.    Poles
  2.    Equator
  3.    Centre of earth
  4.    Surface
 Discuss Question
Answer: Option A. -> Poles
Question 96. By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?
  1.    102
  2.    1036
  3.    1012
  4.    2
 Discuss Question
Answer: Option B. -> 1036
Question 97. Which is the point from where an azimuth originates?
  1.    South
  2.    North
  3.    East
  4.    West
 Discuss Question
Answer: Option B. -> North
Question 98. The weight of a body acts through the centre of
  1.    Gravity
  2.    Mass
  3.    Both (A) and (B)
  4.    Buoyancy
 Discuss Question
Answer: Option A. -> Gravity
Question 99. If the spinning speed of the earth is increased then the weight of body at the equator
  1.    Increases
  2.    Decreases
  3.    Same
  4.    Double
 Discuss Question
Answer: Option B. -> Decreases
Question 100. What is the escape velocity of the rocket in the earth?
  1.    12.2 km/sec
  2.    10.2 km/sec
  3.    13.2 km/sec
  4.    11.2 km/sec
 Discuss Question
Answer: Option D. -> 11.2 km/sec

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