Physics GK 25 - Miscellaneous & Previous Years Questions

Physics Multiple Choice Questions (MCQs) and Answers with explanation on Miscellaneous Facts & Questions in Physics for SSC, PCS, UPSC, IAS, NTSE, CLAT, Railways, NDA, CDS, Judiciary and other examinations of India.

1.
Consider the following statements: 
  1. It takes approximately 11 seconds for the light to reach the earth from moon
  2. It takes approximately  8 minutes for the light to reach from the sun. 
  3. It takes 4.22 years for the light to reach from the nearest star Alpha Centauri 
Which among the above statements is/ are correct ?
2.
Consider the following statements:
  1. International Space Station is stationary, when seen from Earth
  2. An astronaut in International Space Station feels complete weightlessness
  3. International Space Station is always in a state of Free fall
Which among the above statements is/ are correct?
3.
Consider the following regarding the differences between ‘holography’ and ‘photography’:
  1. When a photograph is cut in half, each piece shows half of the scene. When a hologram is cut in half, the whole scene can still be seen in each piece.
  2. A lens is required in photography to record the image, whereas in holography, the light from the object is scattered directly onto the recording medium.
Select the statement(s) which is/are correct?
4.
Which of the following cases amount to be some work done in terms of Physics?
  1. A man pushing a wall but failing to move it
  2. A coolie standing with a load of 12 kg on his head
  3. A boy climbing up a staircase
  4. A boy carrying a box on his head and sliding over a frictionless horizontal surface
Select the correct option from the codes given below:
5.
One joule of work is said to be done when__:
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