11. Stars appears to move from east to west because
12. Pa(Pascal) is the unit for
13. Planets do not twinkle because
14. Metals are good conductors of electricity because:
15. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
16. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
17. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:
18. Pick out the scalar quantity
19. Rectifiers are used to convert:
20. Out of the following, which is not emitted by radioactive substance?
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