Questions by varun

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Why does the density of solid | liquid decreases with rise in

asked Mar 19, 2022 in 11th Physics

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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

asked Mar 19, 2022 in 11th Physics

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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

asked Mar 19, 2022 in 11th Physics

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Calculate Cp for air, given that `Cv =0.162 cal g^(-1) k^(-1)` and density air at N.T. P is `0.001293

asked Mar 19, 2022 in 11th Physics

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Develop a relation between the co-efficient of linear expansion, co-efficient superficial expansion and coefficient of cubical expansion of a

asked Mar 19, 2022 in 11th Physics

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Calculate the amount of heat required to convert 1.00kg of ice at – 100c into steam at 1000c at normal pressure. Specific heat of ice = 2100J|kg|k. Latent heat of fusion of ice `= 3.36xx10^5J|kg`, specific heat of water = 4200J|kg|k. Latent heat of vaporization of water =

asked Mar 19, 2022 in 11th Physics

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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 =

asked Mar 19, 2022 in 11th Physics

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Why is temperature gradient required for flow of heat from one body to

asked Mar 19, 2022 in 11th Physics

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Why are Calorimeters made up of metal

asked Mar 19, 2022 in 11th Physics

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If a body has infinite heat capacity? What does it

asked Mar 19, 2022 in 11th Physics

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A gas can have any value of specific heat depending upon how heating is carried out.

asked Mar 19, 2022 in 11th Physics

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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 |

asked Mar 19, 2022 in 11th Physics

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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

asked Mar 19, 2022 in 11th Physics

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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 |

asked Mar 19, 2022 in 11th Physics

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How is heat loss reduced in

asked Mar 19, 2022 in 11th Physics

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Calculate the amount of heat necessary to raise the temperature of 2 moles of HEgas from `20^oC` to `50^oC` using:-1) Constant – Volume Process 2) Constant Pressure Process Here for, He; `CV = 1.5 R and CP =

asked Mar 19, 2022 in 11th Physics

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What is critical temperature? How will you differentiate between a gas and a vapour depending on critical

asked Mar 19, 2022 in 11th Physics

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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

asked Mar 19, 2022 in 11th Physics

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Which has a higher specific heat ; water or

asked Mar 19, 2022 in 11th Physics

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Why is latent heat of vaporization of a material greater than that of latent heat of

asked Mar 19, 2022 in 11th Physics

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