XII Physics | Solved Numericals | Chapter No.11| Heat |Physics Class 12
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The Video Contains the Solution
The Video Contains the Solution of these problems:
11.1 (i) The Normal human body temperature is 98.6 degree F.What is this temperature of Celsius scale?(ii) At what temperature do the Celsius and Fahrenheit scale coincide?
11.2 A steel rod has length of exactly 0.2 cm at 30 degree Celsius .What will be its length at 60 degree Celsius?
11.3 Find the change in the aluminum sphere of 0.4 m radius when it is heat from 0 to 100 degree Celsius?
11.4 Calculate the root mean square speed of hydrogen molecule at 800 K .
11.5 (a) Determine the average value of kinetic energy of the particles of an ideal gas at 0 degree Celsius and 50 degree Celsius.
(b) What is the kinetic energy per mole of an ideal gas at these temperatures?
11.6 A 2 kg iron block is taken from a furnace where its temperature was 650 degree C and placed on a large block of ice at 0 C. Assuming that all heat given by iron is used to melt the ice, how much ice is melted?
11.7 In a certain process 400 J of heat is supplied to a system and at the same time 150 J of work is done by the system .What is the increase in internal energy of the system?
11.8 There is an increase in internal energy of 400 J when 800 J of work is done by the system .What is the amount of heat supplied during this process?
11.9 A heat engine performs 200 j of work in each cycle and has efficiency of 20 % for each cycle of operation (a) how much heat is absorbed and (b) how much heat is expelled?
11.10 A heat engine operated between two reservoirs of temperature of 25 C and 300 C.What is the maximum efficiency of this engine?
11.11 The low temperature reservoir of a carnot engine is at & degree Celsius and has a efficiency of 40%.How much the temperature of high temperature reservoir be increased to increase the efficiency to 50%?
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Ch 11 Heat: XII Phy | Ch 11 Heat
Ch 12 Electrostatics: XII Phy | Ch 12 Electrostatics
Ch 13 Current Electricity: XII Phy | Ch 13 Current Electricity
Ch 14 Magnetism & Electromagnetism: XII Phy | Ch 14 Magnetism & Electroma...
Ch 15 Electrical Measuring Instruments: XII Phy | Ch 15 Electrical Measuring ...
Ch#16 Electromagnetic Waves & Electronics: XII Phy | Ch#16 Electromagnetic Waves...
Ch 17 Advent of Modern Physics: XII Phy | Ch 17 Advent of Modern Physics
Ch 18 Atomic Spectra: XII Phy | Ch 18 Atomic Spectra
Ch 19 The Atomic Nucleus: XII Phy | Ch 19 The Atomic Nucleus
Ch 20 The Nuclear Radiations: XI Phy |Ch 20 The Nuclear Radiations
11.1 (i) The Normal human body temperature is 98.6 degree F.What is this temperature of Celsius scale?(ii) At what temperature do the Celsius and Fahrenheit scale coincide?
11.2 A steel rod has length of exactly 0.2 cm at 30 degree Celsius .What will be its length at 60 degree Celsius?
11.3 Find the change in the aluminum sphere of 0.4 m radius when it is heat from 0 to 100 degree Celsius?
11.4 Calculate the root mean square speed of hydrogen molecule at 800 K .
11.5 (a) Determine the average value of kinetic energy of the particles of an ideal gas at 0 degree Celsius and 50 degree Celsius.
(b) What is the kinetic energy per mole of an ideal gas at these temperatures?
11.6 A 2 kg iron block is taken from a furnace where its temperature was 650 degree C and placed on a large block of ice at 0 C. Assuming that all heat given by iron is used to melt the ice, how much ice is melted?
11.7 In a certain process 400 J of heat is supplied to a system and at the same time 150 J of work is done by the system .What is the increase in internal energy of the system?
11.8 There is an increase in internal energy of 400 J when 800 J of work is done by the system .What is the amount of heat supplied during this process?
11.9 A heat engine performs 200 j of work in each cycle and has efficiency of 20 % for each cycle of operation (a) how much heat is absorbed and (b) how much heat is expelled?
11.10 A heat engine operated between two reservoirs of temperature of 25 C and 300 C.What is the maximum efficiency of this engine?
11.11 The low temperature reservoir of a carnot engine is at & degree Celsius and has a efficiency of 40%.How much the temperature of high temperature reservoir be increased to increase the efficiency to 50%?
__________________________
Ch 11 Heat: XII Phy | Ch 11 Heat
Ch 12 Electrostatics: XII Phy | Ch 12 Electrostatics
Ch 13 Current Electricity: XII Phy | Ch 13 Current Electricity
Ch 14 Magnetism & Electromagnetism: XII Phy | Ch 14 Magnetism & Electroma...
Ch 15 Electrical Measuring Instruments: XII Phy | Ch 15 Electrical Measuring ...
Ch#16 Electromagnetic Waves & Electronics: XII Phy | Ch#16 Electromagnetic Waves...
Ch 17 Advent of Modern Physics: XII Phy | Ch 17 Advent of Modern Physics
Ch 18 Atomic Spectra: XII Phy | Ch 18 Atomic Spectra
Ch 19 The Atomic Nucleus: XII Phy | Ch 19 The Atomic Nucleus
Ch 20 The Nuclear Radiations: XI Phy |Ch 20 The Nuclear Radiations
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