1. The acceleration due to gravity on the earth, at a height (h) above the earth and at a depth (h) from the earth are , and respectively. Then -
2. According to the diagram the power needed to take a block of weight from to in 10 seconds is-
3. The length of the second hand of a clock is .
The linear velocity of the edge of the second hand is-
4. Which graph below, drawn between the height of water (h) in the capillary tube and the radius of the tube (r) in a particular place, is correct?
5. In the case of unsaturated vapour -
i. it can be created in any open or closed space
ii. it can be converted to saturated vapour by increasing the temperature
iii. it obeys Boyle's and Charles's law
Which one is correct?