Mechanical Prop...

Water is flowing continuously dram a temp having an internal diameter 8 × 10³m . The water velocity as it leaves the tap is 0.4 m/s. The diameter of the water stream at a distance 2 × 10^-1m below the tap is close to

A large open tank has two holes in the wall one is a square hole of side L at a depth y from the top and the other is a circular hole of radius R at a depth a y from the top. When the tank is completely filled with water the quantities of water following out per second from both the holes are the some then R is equal to

Assertion : The blood pressure in humans is greater at the feet than at the brain.
Reason : Pressure of liquid at any point is proportional to height density of liquid.
(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.

Assertion : A bubble comes from the bottom of a lake to the top.
Reason : Its radius increases.
(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.

The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at 10^oC and 100^oC. The temprature at which the resistance is 3.26 ohm is

At what temperature the centigrade (Celsius) and Fahrenheit readings at the same.

A vessel contains 110 g of water the heat capacity of the vessel is equal to 10 g of water The initial temprature of water in vessel is 10^o C If 220 g of hot water at 70^o C is poured in the vessel the Final temperature meglecting radiation loss will be

In a water fall the water falls from a height of 100 cm. If the entire K.E. of water is converted in to heat the rise in temperature of water will be

2 kg of Ice at -20^o C is mixed with 5 kg of water at 20^o C in an insulating vessel having a negligible heat capacity calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice care 1 k cal/kg per ^oC and 0.5 K cal/kg 1^oC while the latent heat of fusion of ice is 80 k coil/kg

The variation of density of water with temprature is represented by the