Write the equation for thermo emf when cold junction is at `0^@C` and the hot junction is at `T^@C` what will be the shape of graph showing variation of thermo emf with a temperature?

Write down the equation for thermo emf when cold junction is at 0^@C and the hot junction is at T^@C .

Which of the two thermonmeter, T_1T_2 will show a temperature of 0^@C First?

A long solenoid ‘S’ has ‘n’ turns per meter, with diameter ‘a’. At the centre of this coil we place a smaller coil of ‘N’ turns and diameter ‘b’ (where b < a). If the current in the solenoid increases linearly, with time, what is the induced emf appearing in the smaller coil. Plot graph showing nature of variation in emf, if current varies as a function of mt^2 + C .

Solve the following problems : Suppose the masses of the calorimeter , the water in it and the hot object made up of copper which is put in the calorimeter are the same . The initaial temperature of the calorimeter and water is 30 ⁰C and that of the hot object is 60 ⁰C . the specific heats of copper and water are 0.09 cal/g ⁰C and 1 cal/g ⁰C respectively . what will be the final temperature of water ?

Practice problems : When 15 cal of heat is supplied to a gold coin of mass 5 g , what will be the rise in temperature of the coin ? ( specific heat of gold = 0.03 cal/g ⁰C)

Write the following equations in the form ax^2+bx+c=0 . Also, find the value of a,b and c. (i) t^2-3t=4-2t .

An ice box used for keeping cold eatables has a total wall area of 1 metre^2 and a wall thickness of 5.0 cm. The thermal conductivity of the ice box is K=0.01 (jou l e)/(metre)^@C . It is filled with ice at 0^@C along with eatables on a day when the temperature is 30^@C . The latent heat of fusion of ice is 334 x 10^3 joules/kg. The amount of ice melted in one day is (1 day = 86,400 seconds)