The motion of a car along a straight path is shown by the following figure

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The car starts from O and reaches A, B and C at different instants of time. During its motion from O to C and back to B, the distance covered and the magnitude of the displacement are respectively

Water boils at a lower temperature at high altitudes, because

Concave mirror is used in headlights of vehicles, because it

If some object is weighed when submerged in water, then what will happen to its weight compared to its weight in air?