A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference ?

Related Mcqs:

1. A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?

   A. 0.01J
   B. 0.02J
   C. 0.04J
   D. 1.0J

2. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?

   A. mg
   B. mg – ma
   C. mg + ma
   D. mg – ma

3. The profile of aeroplane wing which lifts it up is called as_____________?

   A. Wing shape
   B. Aerofoil profile
   C. Curved profile
   D. None of these

4. If a body a mass of 2 kg is raised vertically through 2m, then the work done will be _________________?

   A. 38.2 J
   B. 392.1 J
   C. 39.2 J
   D. 3.92 J

5. A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2 in height further, find the magnitude of the force. Consider g = 10m/s 2

   A. 22N
   B. 16N
   C. 20N
   D. 4N

   Submitted by: Huzaifa Naseer

6. Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are__________________?

   A. Longitudinal
   B. Transverse
   C. Periodic
   D. both A and C

7. When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?

   A. 5m/s, 1m/s
   B. 3m/s, 3m/s
   C. 6m/s, 1m/s
   D. 4m/s, 2m/s

8. A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________?

   A. 9.8 N
   B. 19.6 N
   C. 129.4 N
   D. 39.2 N

9. Ratio of the weight of H-atom to that of an electron is approximately______________?

   A. 18.336
   B. 1836
   C. 18360
   D. 183.6

10. If a lift is going up with acceleration, the apparent weight of a body is:

    A. More than the true weight
    B. More or less the true weight
    C. Less than the true weight
    D. Equal to the true weight

    Submitted by: Naveed Tahir