MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Blackbody

Two solid sph...

Question

Two solid spheres A and B made of same material have radii Ra and Rb . Both the sphere are cool from the same temp. under the condition valid for Newton's law of cooling . The rate of ratio of change of temperature A and B

Open in App

Solution

Suggest Corrections

thumbs-up

4

Similar questions

Q. Assertion :A solid sphere and a hollow sphere of same material and same radius are kept at same temperatures in atmosphere. Rate of cooling of hollow sphere will be more. Reason: If all other conditions are same, then rate of cooling is inversely proportional to mass of body.

Q. Two solid spheres, of radii

R_{1}

R_{2}

are made of the same material and have similar surface. The spheres are raised to the same temperature and then allowed to cool under identical conditions.Assuming Spheres to be perfect conductors of heat, their initial rates of loss of heat are

Q. A hollow and a solid sphere of same material and having identical outer surface are heated under identical condition to the same temperature and allowed to cool down at the same time (both have same emissivity and absorptive power), then:

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature $120^{\circ} C$ , then

Q. A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.

(a) Both will emit equal amount of radiation per unit time in the biginning
(b) Both will absorb equal amount of radiation from the surrounding in the biginning.
(c) The initial rate of cooling (dT/dt) will be the same for the two spheres
(d) The twp spheres will have equal temperature at any instant

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Radiation

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon