MCQ - CBSE Class 9 Science We wind our watch once a day, what happens to the energy ? 10/03/2023 Ajit kumar 113 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What is the work done by a coolie walking on a horizontal platform with a load on his head ? 10/03/2023 Ajit kumar 131 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Define work. Write an expression for work in terms of force and displacement. State SI unit of work done. 10/03/2023 Ajit kumar 115 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Define potential energy. Write an expression for potential energy. Write the SI unit of potential energy. 10/03/2023 Ajit kumar 88 Views 0 Comments Read more
MCQ - CBSE Class 9 Science A 2 m high person is holding a 25 kg trunk on his head and is standing at a roadways bus-terminus. How much work is done by the person? 10/03/2023 Ajit kumar 66 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Seema tried to push a heavy rock of 100 kg for 200 s but could not move it. Find the work done by Seema at the end of 200 s. 10/03/2023 Ajit kumar 77 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Does the work done in raising an object vertically depend upon how fast is raised? 10/03/2023 Ajit kumar 75 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Name at least three commonly used units of energy. 10/03/2023 Ajit kumar 76 Views 0 Comments Read more
MCQ - CBSE Class 9 Science When an arrow is shot from its bow, it has kinetic energy. From where does it get the kinetic energy ? 10/03/2023 Ajit kumar 96 Views 0 Comments Read more
MCQ - CBSE Class 9 Science (For Q.1 to 5): Justify giving proper reasoning whether the work done in the following cases is positive or negative : 10/03/2023 Ajit kumar 75 Views 0 Comments Read more