31. The wall of a dam is broader at the base
32. It is easy to burst a gas-filled balloon with a needle than with a nail. It is because
33. The force exerted on an object is 200 N and its mass is 100 kg. Find the acceleration of the object.
34. The spokes used in the wheel of a bicycle increase its
35. It is difficult to cook rice
36. Energy per unit volume is dimensionally equal to
37. To open a door easily, the handle should be fixed
38. Water boils at a lower temperature on the hills because
39. The force exerted by a magnet is an example of ________
40. A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of ________ .
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