HomeCLASS 9 SCIENCEWork Power & Energy MCQ Test Work Power & Energy MCQ Test Quiz Quiz-Work & Energy 1. When a stone tied to a string is whirled in a circle, what kind of work is said to be done on it by the string? Positive Negative Zero None 2. The work done by the weight of 1 kg mass while it moves up through 1 m is -9.8J 9.8J 1/9.8J -1/9.8J 3. A force of 10N act on a body towards East. The work done by the force while the body moves 1 m in east north direction. 10√2 J 10/√2 J -10 J -10/√2 J 4. A man with box on his head is climbing up in ladder. The work done by the man on the box is Positive Negative Zero None 5. A porter with a suitcase on his head is climbing up on stair with uniform speed the work done by ‘weight of suitcase’ on the suitcase. Positive Negative Zero None 6. As a body roll down on inclined plane, it has Only K.E Only P.E Both K.E & P.E None 7. In which of the following cases is the potential energy of a spring minimum? When it is compressed When it is extended When it is at its natural length When it is at its natural length but is kept at a height h above the ground 8. A ball is thrown upwards from a point A. It reaches up to the highest point B and returns. Kinetic energy at A = Kinetic energy at B Potential energy at A = Potential energy at B Potential energy at B = Kinetic energy at B Potential energy at B = Kinetic energy at A 9. A body of mass 2 kg is dropped from a height of 1 m. Its kinetic energy as it reaches the ground is 19.6 J 19.6 N 19.6 kg 19.6 m 10. Two bodies of unequal masses are dropped from a cliff. At any instant, they have equal Momentum Acceleration Kinetic energy Potential energy Submit your response Related MCQ tests : MATTER IN OUR SURROUNDINGS-MCQ TEST 1 MATTER IN OUR SURRPOUNDINGS-MCQ TEST 2 MATTER IN OUR SURROUNDINGS-MCQ TEST 3 MATTER IN OUR SURRPUNDINGS-TRUE FALSE TEST IS MATTER PURE AROUND US-MCQ TEST ATOMS AND MOLECULES-MCQ TEST ATOMIC STRUCTURE-MCQ TEST FANDAMENTAL UNIT OF LIFE-MCQ TEST MOTION-MCQ TEST TISSUE-MCQ TEST FORCE AND LAWS OF MOTION-MCQ TEST FORCE AND LAWS OF MOTION-MCQ TEST GRAVITATION - MCQ TEST WORK ENERGY AND POWER- MCQ TEST 1 WORK ENERGY AND POWER- MCQ TEST 2 WORK ENERGY AND POWER- TRUE AND FALSE TEST WHY DO WE FALL ILL? - MCQ TEST WHY DO WE FALL ILL? - TRUE AND FALSE TEST Newer Older
