Mechanical Prop...

An incompressible fluid flows steadily through a cylindrical pipe which has radius 2 r at point A and radius r at B further along the flow direction. It the velocity at point A is V, its velocity at point B.

A block of ice floats on a liquid of density 1.2 in a beaker then level of liquid when ice completely melt.

Assertion : To empty an oil tank two holes so it will made.
Reason : Oil will come out of two holes so it will be emptied faster.
(a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c) If assertion is true but reason is false.
(d) IF the assertion and reason are false.
(e) If assertion is false but reason is true.

Oxygen boils at 183^oC. This temperature is approximately.

Maximum density of H₂O is at the temperature.

Mercury thermometers can be used to measure tempratures up to

If temperature of an object is 140^o F then its temperature in centigratde is

When the room temprature becomes equal to the dew point the relative humidity of the room is

If the length of a cylinder on heating increases by 2% the area of its base will increase by.

Density of substance at 0^o C is 10 gm/cc and at 100^o C its density is 9.7 gm/CC. The coefficient of linear expansion of the substance will be