The following graph shows the temperature of a patient in a hospital,recorded every hour: (a)What was the patients temperature at 1 p.m? (b)When was the patient's temperature `38.5^@` C? (c)The patient's temperature was the samae two times during the period given.What were these two times? (d)What was the temperature at 1.30 p.m?How did you arrive at your answer? (e)During which periods did the patients temperature showed an upward trend?

A courier-person cycles from a tower to a neighbouring suburban area to deliver a parcel to a merchant.His distance from the town at different times is shown by the following graph.(a)What is the scale taken for the time axis? (b)How much time did the person take for the travel? (c)How far is the place of the merchant from the town? (d)Did the person stop on his way?Explain. (e)During which period did he ride fastest?

An air bubble of volume 1.0 xx 10^(-6)m^(3) rises from the bottom of a lake 40 m deep at a temperature 12^(@)C . To what volume does it grow when it reaches the surface, which is at a temperature of 35^(@)C ?

The coefficient of volume expansion of glycerine is 49 xx 10^(-5) K^(-1) . What is the fractional change in its density for a 30^(@) C rise in temperature ?

What is the pressure inside the drop of mercury of radius 3.00mm at room temperature? Surface tension of mercury at that temperature (20^@C) is 4.65 times 10^-1 N m^-1 . The atmospheric pressure is 1.01 times 10^5 Pa . Also give the excess pressure inside the drop.

A steel tape Im long is correctly calibrated for a temperature of 27.0 ^(@) C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0^(@) C .What is the actual length of the steel rod on that day? What is the length of the same steel rod on a day when the temperature is 27.0^(@) C ? Coefficient of linear expansion of steel = 1.20 xx 10^(-5) K^(-1) .

Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following : (a) What is the final pressure of the gas in A and B ? (b) What is the change in internal energy of the gas ? (c) What is the change in the temperature of the gas ? (d) Do the intermediate states of the system (before settling to the final equilibrium state) lie on its P-V-T surface ?

A steel tape 1 m long is correctly cailbrated for temperature of 27.0^(@)C . The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the termperature is 45.0^(@)C . What is the actual length of the steel rod on that day? What is the length of the same steel rood on a day when the temper ature is 27.0^(@)C ? alpha of steel is 1.20xx10^(-5)""^(@)C^(-1) ?