It is easier to roll a stone up a sloping road than to lift it vertical upwards because

Q: It is easier to roll a stone up a sloping road than to lift it vertical upwards because

  1. work done in rolling is more than in lifting
  2. work done in lifting the stone is equal to rolling it
  3. work done in both is same but the rate of doing work is less in rolling
  4. work done in rolling a stone is less than in lifting it
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Radiocarbon is produced in the atmosphere as a result of

Q: Radiocarbon is produced in the atmosphere as a result of

  1. collision between fast neutrons and nitrogen nuclei present in the  atmosphe
  2. reaction of ultraviolet light from the sun on atmospheric oxygen
  3. action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
  4. lightning discharge in atmosphere
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What is the major difference(s) between perspective and parallel projection?

Q: What is the major difference(s) between perspective and parallel projection?

  1. Parallel projection can only be used with objects containing parallel edges.
  2. Perspective projection gives a more realistic representation of an object.
  3. Parallel projection is equivalent to a perspective projection where the viewer is standing infinitely far away.
  4. 2 and 3

 

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