Arihant Physics by D.C Pandey
A black body calorimeter filled with hot water cools from 60^∘C to 50^∘C in 4 min and 40^∘C to 30^∘C in 8 min. The approximate temperature of surrounding is :
05
Sep
A black body calorimeter filled with hot water cools from 60^∘C to 50^∘C in 4 min and 40^∘C to 30^∘C in 8 min. The approximate temperature of surrounding is : A black body calorimeter filled with hot water cools from 60^∘C to 50^∘C in 4 min and 40^∘C to 30^∘C in 8 min. The approximate [...]
For a monoatomic ideal gas undergoing an adiabatic change, the relation between temperature and volume TV^x = constant where x is :
05
Sep
For a monoatomic ideal gas undergoing an adiabatic change, the relation between temperature and volume TV^x = constant where x is : For a monoatomic ideal gas undergoing an adiabatic change the relation between temperature and volume TV^x = constant where x is : September 5, 2021 Category: Arihant Physics by D.C Pandey , Chapter [...]
Two monoatomic ideal gas at temperature T1 and T2 are mixed. There is no loss of energy. If number of their molecules are n1 and n2 respectively. The temperature of the mixture will be?
05
Sep
Two monoatomic ideal gas at temperature T1 and T2 are mixed. There is no loss of energy. If number of their molecules are n1 and n2 respectively. The temperature of the mixture will be? Two monoatomic ideal gas at temperature T1 and T2 are mixed. There is no loss of energy. If number of their [...]
A black metal foil is warmed by radiation from a small sphere at temperature ′ T ′ and at a distance ′ d ′ . It is found that the power received by the foil is P. If both the temperature and distance are doubled, the power received by the foil will be :
05
Sep
A black metal foil is warmed by radiation from a small sphere at temperature ′ T ′ and at a distance ′ d ′ . It is found that the power received by the foil is P. If both the temperature and distance are doubled, the power received by the foil will be : The [...]
A composite rod made of three rods of equal length and cross-section as shown in the fig. The thermal conductivities of the materials of the rods are K/2, 5 K and K respectively. The end A and end B are at constant temperatures. All heat entering the face A goes out of the end B. The effective thermal conductivity of the bar is :
05
Sep
A composite rod made of three rods of equal length and cross-section as shown in the fig. The thermal conductivities of the materials of the rods are K/2, 5 K and K respectively. The end A and end B are at constant temperatures. All heat entering the face A goes out of the end B. [...]
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5 K and K respectively. The end A and end B are at constant temperatures. All heat entering the face A goes out of the end B. The effective thermal conductivity of the bar is : ,
A composite rod made of three rods of equal length and cross-section as shown in the fig. The thermal conductivities of the materials of the rods are K/2 ,
Some steam at 100^∘C is passed into 1.1 kg of water contained in a calorimeter of water equivalent 20 gm at 15^∘C till the temperature of the calorimeter and its contents rises to 80^∘C. The mass of the steam condensed in kg is
05
Sep
Some steam at 100^∘C is passed into 1.1 kg of water contained in a calorimeter of water equivalent 20 gm at 15^∘C till the temperature of the calorimeter and its contents rises to 80^∘C. The mass of the steam condensed in kg is The following sets of values for Cv and Cp of an ideal [...]
The specific heat of a metal at low temperatures varies according to S = aT^3 where a is a constant and T is the absolute temperature. The heat energy needed to raise unit mass of the metal from T = 1K to T = 2K is
05
Sep
The specific heat of a metal at low temperatures varies according to S = aT^3 where a is a constant and T is the absolute temperature. The heat energy needed to raise unit mass of the metal from T = 1K to T = 2K is The following sets of values for Cv and Cp [...]
A block of ice with mass m falls into a lake. After impact, a mass of ice 5/m melts. Both the block of ice and the lake have a temperature of 0^oC . If L represents the latent heat of fusion, the distance the ice fell before striking the surface is
05
Sep
A block of ice with mass m falls into a lake. After impact, a mass of ice 5/m melts. Both the block of ice and the lake have a temperature of 0^oC . If L represents the latent heat of fusion, the distance the ice fell before striking the surface is A block of ice [...]
Steam at 100^oC is added slowly to 1400 gm of water at 16^oC until the temperature of water is raised to 80^oC. The mass of steam required to do this is (Lv = 540cal/gm):
05
Sep
Steam at 100^oC is added slowly to 1400 gm of water at 16^oC until the temperature of water is raised to 80^oC. The mass of steam required to do this is (Lv = 540cal/gm): Steam at 100^oC is added slowly to 1400 gm of water at 16^oC until the temperature of water is raised to [...]
A rod of length 2m rests on smooth horizontal floor. If the rod is heated from 0^∘C to 20^∘C. Find the longitudinal strain developed? (α = 5×10^−5 /∘C)
05
Sep
A rod of length 2m rests on smooth horizontal floor. If the rod is heated from 0^∘C to 20^∘C. Find the longitudinal strain developed? (α = 5×10^−5 /∘C) A rod of length 2m rests on smooth horizontal floor. If the rod is heated from 0^∘C to 20^∘C. Find the longitudinal strain developed? (α = 5×10^−5 [...]