Part 1
Relation between the colour and the temperature of a star is given by.
10
Sep
Relation between the colour and the temperature of a star is given by. Relation between the colour and the temperature of a star is given by. September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - Heat Transfer , Part 1 ,
A body with an initial temperature θ1 is allowed to cool in surrounding which is at a constant temperature of θ0 (θ0 < θ1), Assume that Newton's law of cooling is obeyed. Let k=constant. The temperature of the body after time t is best expressed by
10
Sep
A body with an initial temperature θ1 is allowed to cool in surrounding which is at a constant temperature of θ0 (θ0
A sphere a cube and a thin circular plate all having same mass and made of same materials are heated to the same temperature and then allowed to cool. Which of then cool fastest ?
10
Sep
A sphere a cube and a thin circular plate all having same mass and made of same materials are heated to the same temperature and then allowed to cool. Which of then cool fastest ? A sphere a cube and a thin circular plate all having same mass and made of same materials are heated [...]
A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.
10
Sep
A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature. A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature. September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - [...]
Two metallic spheres S1, and S2 are made of the same material and have got identical surface finish. The mass of S1 is thrice that of S2. Both the spheres are heated to the same high temperature and placed in the same room having lower temperature but are thermally insulated from each other. The ratio of the initial rate of cooling of S1 to that of S2 is
10
Sep
Two metallic spheres S1, and S2 are made of the same material and have got identical surface finish. The mass of S1 is thrice that of S2. Both the spheres are heated to the same high temperature and placed in the same room having lower temperature but are thermally insulated from each other. The ratio [...]
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120 C, then
10
Sep
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120 C, then A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120 C then September 10, 2021 Category: Cengage NEET by [...]
The temperature of an isolated black body falls from T1 to T2 in time t . Let c be constant.
10
Sep
The temperature of an isolated black body falls from T1 to T2 in time t . Let c be constant. The temperature of an isolated black body falls from T1 to T2 in time t . Let c be constant. September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - Heat Transfer [...]
A spherical black body of radius r radiates power P , and its rate of cooling is R .
10
Sep
A spherical black body of radius r radiates power P , and its rate of cooling is R . A spherical black body of radius r radiates power P and its rate of cooling is R . September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - Heat Transfer , Part 1 [...]
Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures 2T and 3T respectively. The temperature of the middle (i.e., second) plate under steady state condition is :
10
Sep
Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures 2T and 3T respectively. The temperature of the middle (i.e., second) plate under steady state condition is : [...]
A system S receives heat continuously from an electrical heater of power 10 W. The temperature of S becomes constant at 50 C when the surrounding temperature is 20 C. After the heater is switched off, S cools from 35.1 C to 34.9 C in 1 minute. The heat capacity of S is :
10
Sep
A system S receives heat continuously from an electrical heater of power 10 W. The temperature of S becomes constant at 50 C when the surrounding temperature is 20 C. After the heater is switched off, S cools from 35.1 C to 34.9 C in 1 minute. The heat capacity of S is : A [...]