Cengage JEE Mains Physics by B.M Sharma
A glass flask is filled up to a mark with 50 cc of mercury at 18C. If the flask and contents are heated to 38C, how mech mercury will be above the mark (alpha for glass is 9 x 10^(-6)/C and coefficient of real expansion of mercury is 180 x 10^(-6)/C)?
06
Sep
A glass flask is filled up to a mark with 50 cc of mercury at 18C. If the flask and contents are heated to 38C, how mech mercury will be above the mark (alpha for glass is 9 x 10^(-6)/C and coefficient of real expansion of mercury is 180 x 10^(-6)/C)? A glass flask is [...]
A flask of volume 10^3 cc is completely filled with mercury at 0∘C The coefficient of cubical expansion of mercury is 180 × 10^−6/∘C and heat of glass is 40 × 10^−6/∘C. If the flask in now placed in boiling water at 100∘C how much mercury will overflow?
06
Sep
A flask of volume 10^3 cc is completely filled with mercury at 0∘C The coefficient of cubical expansion of mercury is 180 × 10^−6/∘C and heat of glass is 40 × 10^−6/∘C. If the flask in now placed in boiling water at 100∘C how much mercury will overflow? The rates of cooling of two different [...]
The loss of weight of a solid when immersed in a liquid at 0C is W_(0) and at t degree C is ‘W’. If cubical coefficient of expansion of the solid and the liquid are gamma_(s) and gamma_(1) then W is equal to
06
Sep
The loss of weight of a solid when immersed in a liquid at 0C is W_(0) and at t degree C is ‘W’. If cubical coefficient of expansion of the solid and the liquid are gamma_(s) and gamma_(1) then W is equal to The rates of cooling of two different liquids put in exactly similar [...]
A pendulum clock having copper rod keeps correct time at 20^∘ C. It gains 15 s per day if cooled to 0 C. The coefficient of linear expansion of copper is
06
Sep
A pendulum clock having copper rod keeps correct time at 20^∘ C. It gains 15 s per day if cooled to 0 C. The coefficient of linear expansion of copper is A pendulum clock having copper rod keeps correct time at 20^∘ C. It gains 15 s per day if cooled to 0 C. The [...]
Ice at 0C is added to 200g of water initially at 70C in a vacuum flask. When 50 g of ice has been added and has all melted the temperature of the flask and contents is 40C . When a further 80 g of ice has been added and has all melted, the temperature of the whole is 10C . Neglecting heat to surrounding the latent heat of fusion of ice.
06
Sep
Ice at 0C is added to 200g of water initially at 70C in a vacuum flask. When 50 g of ice has been added and has all melted the temperature of the flask and contents is 40C . When a further 80 g of ice has been added and has all melted, the temperature of [...]
A liquid of density 0.85 g/cm^(3) flows through a calorimeter at the rate of 8.0 cm^(2)/s. Heat is added by means of a 250 W electric heating coil and a temperature difference of 15 C is established in steady state conditions between the inflow and the outflow points of the liquid. The specific heat for the liquid will be
06
Sep
A liquid of density 0.85 g/cm^(3) flows through a calorimeter at the rate of 8.0 cm^(2)/s. Heat is added by means of a 250 W electric heating coil and a temperature difference of 15 C is established in steady state conditions between the inflow and the outflow points of the liquid. The specific heat for [...]
A mass m of lead shot is placed at the bottom of a vertical cardboard cylinder that is 1.5 m long and closed at both ends. The cylinder is suddenly inverted so that the shot falls 1.5 m. If this process is repeated quickly 100 times, assuming no heat is dissipated or lost, the temperature of the shot will increase by (specific heat of lead=0.03 cal/gC)
06
Sep
A mass m of lead shot is placed at the bottom of a vertical cardboard cylinder that is 1.5 m long and closed at both ends. The cylinder is suddenly inverted so that the shot falls 1.5 m. If this process is repeated quickly 100 times, assuming no heat is dissipated or lost, the temperature [...]
An iron rocket fragment initially at -100 C enters the earth’s atmosphere almost horizontally and quickly fuses completely in atmospheric friction. Specific heat of iron is 0.11 kcal/kg C its melting point is 1535 C and the latent heat of fusion is 3 kcals//kg. The minimum velocity with which the fragment must have entered the atmosphere is
06
Sep
An iron rocket fragment initially at -100 C enters the earth’s atmosphere almost horizontally and quickly fuses completely in atmospheric friction. Specific heat of iron is 0.11 kcal/kg C its melting point is 1535 C and the latent heat of fusion is 3 kcals//kg. The minimum velocity with which the fragment must have entered the [...]
A brass wire 2 m long at 27 C is held taut with negligible tension between two rigid supports. If the wire is cooled to a temperature of -33 C, then the tension developed in the wire, its diameter being 2 mm, will be (coefficient of linear expansion of brass=2.0 x 10^(-5)/C and Young’s modulus of brass =0.91 x 10^(11)Pa)
06
Sep
A brass wire 2 m long at 27 C is held taut with negligible tension between two rigid supports. If the wire is cooled to a temperature of -33 C, then the tension developed in the wire, its diameter being 2 mm, will be (coefficient of linear expansion of brass=2.0 x 10^(-5)/C and Young’s modulus [...]
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Cengage JEE Mains Physics by B.M Sharma
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Chapter 13 - Thermal Expansion, Calorimetry and Transmission of Heat
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A brass wire 2 m long at 27 C is held taut with negligible tension between two rigid supports. If the wire is cooled to a temperature of -33 C ,
its diameter being 2 mm ,
then the tension developed in the wire ,
will be (coefficient of linear expansion of brass=2.0 x 10^(-5)/C and Young's modulus of brass =0.91 x 10^(11)Pa) ,
A thread of liquid is in a uniform capillary tube of length L. As measured by a ruler. The temperature of the tube and thread of liquid is raised by Delta T. If gamma be the coefficient of volume expansion of the liquid and alpha be the coefficient of linear expansion of the material of the tube, then the increase Delta L in the length of the thread, again measured by the ruler will be
06
Sep
A thread of liquid is in a uniform capillary tube of length L. As measured by a ruler. The temperature of the tube and thread of liquid is raised by Delta T. If gamma be the coefficient of volume expansion of the liquid and alpha be the coefficient of linear expansion of the material of [...]