MCQ 11 MarkWhat is the $SI$ unit of power?A$J$✓$J/s$C$J.s$D$s$AnswerCorrect option: B. $J/s$View full question & answer→
MCQ 21 MarkIf the velocity of an object increases, then its kinetic energy✓increases.BdecreasesCremains the same.Dbecomes zero.AnswerCorrect option: A. increases.View full question & answer→
MCQ 31 MarkWhich of the following is an example of stored energy?Alight energyBsound energyCelectrical energy✓chemical energyAnswerCorrect option: D. chemical energyView full question & answer→
MCQ 41 MarkWhich form of energy is possessed by a stretched spring?Achemical✓elastic potentialCkineticDeatAnswerCorrect option: B. elastic potentialView full question & answer→
MCQ 51 MarkWhen a ball is thrown vertically upwards, the gravitational potential energy of the ball✓increases.BdecreasesCremains the sameDbecomes zero.AnswerCorrect option: A. increases.View full question & answer→
MCQ 61 MarkIf the force applied on a body decreases, then the work done on it will✓decrease.BincreaseCremain the same.Dbe zero.AnswerCorrect option: A. decrease.View full question & answer→
MCQ 71 MarkNo work is said to be done if the angle between the directions of force and displacement isA$0^\circ$✓$90^\circ$Cbetween $0^\circ$ and $90^\circ$D$180^\circ$AnswerCorrect option: B. $90^\circ$View full question & answer→
MCQ 81 MarkIn which of the following situations, no work is said to be done?Adrawing water from a wellBkicking a ballCclimbing up a hill✓pushing a wallAnswerCorrect option: D. pushing a wallView full question & answer→