Question 11 MarkFrictional force is electromagnetic in origin.AnswerTrue.View full question & answer→
Question 21 MarkOne tends to slip over a banana peel on the street and one can slip due to mud are events that occur due to reduced friction.AnswerTrue.View full question & answer→
Question 31 MarkThe density of a material is useful to determine its purity.AnswerTrue.View full question & answer→
Question 41 MarkWhen a body is completely immersed in a liquid, the buoyant force acting on it due to the liquid is proportional to the volume of the liquid displaced by the body.AnswerTrue.View full question & answer→
Question 51 MarkPressure due to a given force is directly proportional to the area on which the force acts.AnswerFalse. (Pressure due to a given force is inversely proportional to the area on which the force acts.)View full question & answer→
Question 61 MarkAtmospheric pressure increases with altitude.AnswerFalse. (Atmospheric pressure decreases with altitude.)View full question & answer→
Question 71 MarkThe buoyant force due to a liquid is proportional to the acceleration due to gravity.AnswerTrue.View full question & answer→
Question 81 MarkAtmospheric pressure at sea level is about $10^6$ dynes $/ cm ^2$.AnswerTrue.View full question & answer→
Question 101 MarkThe density of water is $1000 g / cm ^3$.AnswerFalse. [The density of water is $1000 kg / m ^3$ (or $1 g / cm ^3$ )]View full question & answer→