Physics question and answers for March 06, 2024
- Q A hot liquid kept in a beaker cools from 80 C to 70 C in W two minutes If the surrounding temperature is 30 C then the time of cooling...
- Q A piece of aluminium falls from a height of 200m on a fixed non conducti ng slab which brings it to rest If the specific heat of aluminium is 210...
- Q Question 4 20 pts A 50 g ice cube at 20 C is dropped into a thermally insulated container containing water at 10 C The final temperature is 5 C...
- Q Temperature of equal masses of three different liquids A B and C are 20 C 30 C and 50 C respectively The temperature when A B are mixed is 24...
- Q How many cubes of ice at 20 C and 10 gm are required to reduce the temperature of 1000 gm of water from 75 C to 10 C Cice 0...
- Q 100 g ice at 0 C is dropped into a calorimeter water equivalent 50 g containing 100 g water at 40 C Resulting temperature of the mixture at equilibrium is...
- Q How much gold in kg is melted if 2 3 mega joules MJ of heat energy is applied if it s initial temperature is at 35 degrees Celsius Specific heat...
- Q What is the use of thin strip at the back of Vernier caliper For measuring internal diameter of a beaker For measuring depth of cylinder For measuring diameter of hollow...
- Q The temperature of a body rises by 44 C when a cer is given to it The same heat when supplied to 22 g of ice at 8 C raises...
- Q Suppose the temperature in degrees Celsius over a 9 hour period is given by T t 12 4t 37 a Find the average temperature b Find the minimum temperature c...
- Q 4 A constant volume gas thermometer shows pressure reading of 50 cm and 90 cm of mercury at 0 C and 100 C respectively When the pressure reading is 60...
- Q 2 What is the use of thin strip at the back of Vernier caliper hr min For measuring internal diameter of a beaker For measuring depth of cylinder For m...
- Q 3 A calorimeter contains 100 g of ice at 20 C x g of water at 80 C is added to the calorimeter such that the final contents of the...
- Q In a thermally insulated vessel containing some water at 30 C 1 kg ice specific heat capacity 0 5 cal g C at 30 C is added The initial amount...
- Q a 330 K c 990 K d 1550 6 Three rods of copper brass and steel are welded together to form a Y shaped structure Area of cross section of...
- Q What is the heat in Joules required to convert 25 grams of 10 C ice into 150 C steam Useful information heat of fusion of water 334 J g heat...
- Q 540 calories of heat convert 1 cubic centimeter of water at 100 C into 1671 cubic centimeter of steam at 100 C at a pressure of one atmosphere Then the...
- Q kept in a container with an open mouth is placed in a large evacuated chamber 1 All the water will vaporise 2 All the water will freeze 3 Part of...
- Q 3 A block of ice of mass 50 kg is sliding on a horizontal plane It starts with speed 5 m s and stops after moving through some distance The...
- Q c 4 5 2 A copper ball of mass 0 2 kg falls freely from height of 15m and bounces to a height of 5m from the ground If the...
- Q eezing of water Compared to a burn due to water at 100 C a burn due to steam at 100 C is 3 Equally dangerous 4 None of these 1...
- Q 1 3 Sipho prepares a bath by mixing 10 0 kg of water at 20 0 C and 10 0 kg of water at 70 0 C into a bath...
- Q Please explair this mam sir I want an detailed explanation 14 2 gm of steam condenses when passed through 40 gm of water initially at 25 C The condensation of...
- Q Q5 B A perfect reversed heat engine is used for making ice at 5 C from water available at 25 C The temperature of freezing mixture is 10 C Calculate...
- Q 2 kg of ice at 20 C is mixed with 5 kg of water at 20 C in an insulating vessel having a negligible heat capacity Calculate the final mass...
- Q A refrigeration system operating on reversed Brayton refrigeration cycle is used for maintaining 250K If the temperature at the end of constant pressure cooling is 300K and rise I the...
- Q A body cools in a surrounding of a constant temperature 30 C Its heat capacity is 2 J C Initial temperature of the body is 400C Assume Newton s law...
- Q 10 gm of ice at 20 C is added to 10 gm of water at 50 C Specific heat of water 1 cal gm C specific heat of ice 0...
- Q A metal cube of side length 1 cm and temperature is kept on an ice slab at 0 C and of thickness 4 cm Find the minimum value of 0...
- Q A cooking vessel on a slow burner contains 5 kg of water and an unknown mass of ice in equilibrium at 0 C at time t 0 The temperature of...
- Q A copper calorimeter of negligible heat capacity contains 1kg water at 20 C The minimum amount of ice at 20 C that should be added to the water s that...
- Q Figure provides data for a boiler and air preheater operating at steady state Methane CH4 enterir the boiler at 25 C 1 atm is burned completely with 170 of theoretical...
- Q A calorimeter contains 0 2 kg of water at 30 C 0 1 kg of water at 60 C is added to it the mixture is well stirred and the...
- Q m U 1 5 m lo Al 9 A sphere of a steel has diameter 5 70 cm at 27 C If diameter of ring at 27 C is 5...
- Q 14 Two identical 1 0 kilogram blocks of copper metal one initially at a temperature T1 0 C and the other initially at a temperature T2 100 C are enclosed...
- Q When 0 1 kg of ice at 0 C is mixed with 0 3kg of water at 35 C in a container The resulting temperature of the mixture is 8...
- Q A temperat same as the A temperature degree on the Celsius scale scale IS A temperature degree on the Fahrenheit scale scale temperature degree on the Reaumur None of the...
- Q Two tanks A and B contain water at 30 C and 80 C respectively Calculate the amount of water that must be taken from each tank to prepare 40 kg...
- Q Equal masses of two liquids are filled in two similar calorimeters The rate of cooling will Depend on the nature of the liquids Depend on the specific heats of liquids...
- Q Illustration 16 Steam at 100 C is passed into 1 1 kg of water contained in a calorimeter of water equivalent 0 02 kg at 15 C till the temperature...
- Q Question 12 A beaker of water equivalent 20 gram contains 80 gm water specific heat capacity of water is 4200 J kg K and is placed on a conveyor belt...
- Q a 150 g LO 20 g c 130 g d 35g 8 When 100 g of a liquid A at 100 C is added to 50 g of a liquid...
- Q Heat supplied Heat supplied 16 Steam at 100 C is passed into 1 1 kg of water contained in a calorimeter of water equivalent 0 02 kg at 15 C...
- Q Two identical blocks of same metal are at 20 C and 80 C respectively Specific heat of the material of the two blocks increase with temperature Which of the following...
- Q 12 15 One kilogram of ice at 0 0 C is mixed with one kilogram of water at 80 C C The final temperature of the mixture is Take Specific...
- Q Water falls from a height of 210 m Assuming whole of energy due to fall is converted into heat the rise in temperature of water would be J 4 2...
- Q our different liquids each of mass 1 kg are separately heated at the same rate The initial temperatures of the liquids are all 20 C The boiling points b p...
- Q Hence temperature of mixture will remain at 100 C llustration 14 A calorimeter of heat capacity 100 J K is at room temperature of 30 C 100 g of water...
- Q 33 One end of a glass capillary tube with a radius r 0 05 cm is immersed into water to a depth of h 2 cm What pressure is required...
- Q 5 1 kg of ice at 0 C 1 kg water at 100 C and 1 kg steam at 100 C are mixed in an insulated closed container After equilibrium...
- Q Steel and copper wires of same length are stretched by the same weight one after the other Young s modulus of steel and copper are 2 10 N m and...
- Q The mass of ice that can transistion to being a liquid by being melted by 1 gram of 100 C steam is Hint Don t forget about hot water remaining...
- Q Suppose that you tercept 5 0 10 3 of the energy radiated by a hot sphere that has a radius of 0 020 m an emissivity of 0 80 and...
- Q vapor at a temperature of 200 F b You have 200 g of coffee at 45 C Coffee has the same specific heat as water How much 5 C ice...
- Q In two experiments with a continuous flow calorimeter to determine the specific heat capacity of a liquid an input power of 60 W produced a rise of 10 K in...
- Q Steam at 100 C is passed into 2 0 kg of water contained in a calorimeter of water equivalent 0 02 kg at 15 C till the temperature of the...
- Q The temperature of 40 gram of water at 20 C would be raised most when mixed with Assume specific heat of water is 1 cal g C 40 g water...
- Q The rms speed of molecules of hydrogen at 27 C is v Then the temperature at which the rms speed of hydrogen molecules will be 2v is 150 K 600...
- Q 3 57 2 You take an ice cream out of the freezer ketp at 18 C outside it is 32 C After one minute the ice creeam has warmed to...
- Q If 150 gram ice at 0 C is mixed with 10 gram steam at 100 C then final temperature of composition under ideal condition is 1 Less than 0 C...
- Q 2 A thermally insulated vessel contains 150 g of water at 0 C Then the air from the vessel is pumped out adiabatically A fraction of water turns into ice...
- Q The melting point of a substance X is 25 C Liquid X at 40 C is slowly added to 20 g of solid X at 20 C kept in an...
- Q Heat required to change 20 g ice at 20 C into steam at 100 C is Specific heat of ice 0 5 and of water 1 cal g C cal...
- Q 10 A pressure cooker having ice at 20 C is heated at constant heat supply rate till the steam comes out at 350 C The possible graphical variation of temperature...
- Q NEET 24 M kilogram of ice is being heated from T C to T C and variation of its temperature T along with heat inputs Q is shown Latent heat...
- Q D A body at temperature T is getting cooled in an atmosphere of temperature To Assuming Newton s law of cooling to be valid which of the following graphs shows...
- Q Example 16 12 In a container of negligible mass 30 g of steam at 100 C is added to 200 g of water that has a temperature of 40 C...
- Q 18 Steam is passed into 54 gm of water at 30 C till th temperature of mixture becomes 90 C If the latent he of steam is 536 cal gm...
- Q Illustration 4 An air bubble doubles in radius on rising from bottom of a lake to its surface If the atmosphere pressure is equal to that due to a column...
- Q 42 1 g of a steam at 100 C melt how much ice at 0 Latent heat of ice 80 cal gm and latent heat of stea 540 cal gm...
- Q Illustration 7 A mixture containing hydrogen and oxygen is having a volume 2000 cm temperature 300 K and pressure 100 kPa and its mass is 0 76 gm Calculate the...
- Q 65 1 kg ice at 20 C is mixed with 1 kg steam at 200 C The equilibrium temperature and mixture content is a 80 C and mixture content 2...
- Q c 1500 cal 200 C d 1000 cal 200 C 0 4 kg of ice at 15 C are added to 5 kg of water at 15 C The temperature...
- Q Illustration 5 If the pressure of a gas contained in closed vessel is increased by 0 5 when heated by 2 C then the initial temperature must be
- Q 80 g of water at 30 C are poured on a large block of ice at 0 C The mass of ice that melts is a 30 g b 80...
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