" 3.Why two holes are made to empty an oil tin? "

Give reason for the following statements: (a) A liquid inside a dropper comes out only when its rubber bulb is pressed hard. (b) Two holes are made to empty an oil tin.

Assertion : To empty an oil tank, two holes are made. Reason : Oil will come out two holes so it will emptied faster.

Assertion : To empty an oil tank, two holes are made. Reason : Oil will come out two holes so it will emptied faster.

Two holes are made in a sealed tin can to take out oil from it. Explain.

A water tank has two holes. The 1st hole alone makes the tank empty in 3 min and 2nd hole alone makes the tank empty in 5 min. If water leaks out a constant rate, how long in minutes does it. If both the holes together empty the tank?

Explain why holes are made in banners and hoarding hanging in the open?

A flask has two holes. The 1^("st") hole alone makes the flask empty in 9 minutes and 2^("nd") hole alone makes the flask empty in 16 minutes. If water leaks out at a constant rate, how long in minutes does it take both the holes empty the flask?

Two holes are made in copper plate. The plate is heated. The distance between the holes

Explain the following : (i) A balloon collapses when air is removed from it. (ii) Water does not run out of a dropper unless its rubber bulb is pressed. (iii) Two holes are made in a completely filled sealed tin can to take out oil from it.