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Why does the density of solid | liquid decreases with rise in
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Mar 19, 2022
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11th Physics
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varun
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marks2
chapter11
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Two bodies at different temperatures T1, and T2 are brought in thermal contact do not necessarily settle down to the mean temperature of T1 and
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Mar 19, 2022
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11th Physics
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varun
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marks2
chapter11
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The resistance of certain platinum resistance thermometer is found to be 2.56 Ω at 00c and 3.56 Ω at `100^oc`. When the thermometer is immersed in a given liquid, its resistance is observed to 5.06 Ω. Determine the temperature of
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Mar 19, 2022
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11th Physics
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varun
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marks2
chapter11
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A ball is dropped on a floor from a height of 2cm. After the collision, it rises up to a height of 1.5m. Assuming that 40% of mechanical energy lost goes to thermal energy into the ball. Calculate the rise in temperature of the ball in the collision. Specific heat capacity of the ball is 800J/k. Take `g =
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Mar 19, 2022
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11th Physics
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varun
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6.7k
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marks2
chapter11
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A gas can have any value of specific heat depending upon how heating is carried out.
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marks2
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A 0.20 Kg aluminum block at `80^oC` is dropped in a copper calorimeter of mass 0.05 Kg containing `200 cm^3` of ethyl alcohol at `20^oC`. What is the final temperature of the mixture? Given Density of ethyl alcohol = `0.81 g | cm^3` ; specific heat of ethyl alcohol `= 0.6 cal | g | '^oC` ; specific heat of copper `= 0.094 cal | g | '^oC`, specific heat of `Al = 0.22 cal | g |
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Mar 19, 2022
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11th Physics
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varun
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6.7k
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marks2
chapter11
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Why is there a difference in the specific heat curve as given by Delong’s petit law and the experimental result at low
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Mar 19, 2022
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11th Physics
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varun
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6.7k
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marks2
chapter11
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Specific heat of Argon at constant Pressure is o.125 cal | g | K and at constant volume is 0.075 cal | g | K. Calculate the density of argon at N.T.P. Given that J = 4.2J |
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Mar 19, 2022
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11th Physics
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varun
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6.7k
points)
marks2
chapter11
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How is heat loss reduced in
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Mar 19, 2022
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marks2
chapter11
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What is critical temperature? How will you differentiate between a gas and a vapour depending on critical
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Mar 19, 2022
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marks2
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If for hydrogen `C_P – C_V = a` and for oxygen `C_P – C_V = b` where `C_P & C_V` refer to specific heat at constant pressure and volume then what is the relation between a and
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Mar 19, 2022
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11th Physics
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marks2
chapter11
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If for a gas, `R/(C_V)= 0.67` then which gas is this:- monatomic, diatomic and tri
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Mar 19, 2022
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11th Physics
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varun
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marks2
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A 50g lead bullet, specific heat `0.02 cal |g | '^C` is initially at `30^oC`. It is fixed vertically upward with a speed of `840m |s` and on returning to the starting level strikes a cake of ice at `0^oC`. How much ice is melted? Assume that all energy is spent in melting ice
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Mar 19, 2022
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11th Physics
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varun
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6.7k
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marks2
chapter11
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A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. If we neglect all vibration modes, find the total energy of the
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Mar 19, 2022
in
11th Physics
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varun
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6.7k
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marks2
chapter11
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Show that `C_P - C_V = R` Where `[C_P =` specific heat at constant pressure ; `C_V =` specific heat at constant volume and R = Universal Gas constant] for an ideal
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Mar 19, 2022
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11th Physics
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varun
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6.7k
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marks2
chapter11
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How do you justify that when a body is being heated at melting point, the temperature remains
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Mar 19, 2022
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11th Physics
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varun
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6.7k
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marks2
chapter11
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Draw and explain a P – T diagram for water showing different
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Mar 19, 2022
in
11th Physics
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varun
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6.7k
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marks2
chapter11
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From what height should a piece of ice fall so that it completely melts? Only one – quarter of heat produced is absorbed by the ice. Given latent heat of ice is `3.4 × 10^5 J | Kg` and acceleration due to gravity, `g = 10m| s^2`
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Mar 19, 2022
in
11th Physics
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varun
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6.7k
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marks2
chapter11
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Two rods A and B are of equal length. Each rod has its ends at temperatures T1 and T2. What is the condition that will ensure equal rates of flow of heat through the rods A and
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Mar 19, 2022
in
11th Physics
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varun
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6.7k
points)
marks2
chapter11
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A layer of ice 10cm thick is formed on a pond. The temperature of air is `– 10^oC`. Calculate how long it will take for the thickness of ice to increase by 1mm. Density of ice` = 1g|cm^3`; Thermal conductivity of ice `= 0.005Cal|s|cm|^oC`; Latent heat of ice `= 80Cal|g`
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Mar 19, 2022
in
11th Physics
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varun
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6.7k
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marks2
chapter11
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