Tag: science & technology

Questions Related to science & technology

  1. work done in rolling is more than in lifting

  2. work done in lifting the stone is much more than 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


Correct Option: D
  1. viscosity of ink

  2. capillary action phenomenon

  3. diffusion of ink through the blotting

  4. siphon action


Correct Option: B
  1. time

  2. distance

  3. light

  4. intensity of light


Correct Option: B
  1. unequal heating of different parts of the atmosphere

  2. magnetic disturbances in the atmosphere

  3. depletion of ozone layer in the atmosphere

  4. equal heating of different parts of the atmosphere


Correct Option: A
  1. 2 minutes

  2. 4 minutes

  3. 8 minutes

  4. 16 minutes


Correct Option: C
  1. all stars move from east to west

  2. the earth rotates from west to east

  3. the earth rotates from east to west

  4. the background of the stars moves from west to east


Correct Option: B
  1. thrust

  2. pressure

  3. frequency

  4. conductivity


Correct Option: B
  1. they emit light of a constant intensity

  2. their distance from the earth does not change with time

  3. they are very far away from the earth resulting in decrease in intensity of light

  4. they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable


Correct Option: D