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Home » ‘Gulab Jamuns’ (assumed to be spherical) are to be heated in an oven. They are available in two sizes, one twice bigger than the other. Pizzas (assumed to be discs) are also to be heated in the oven. They are also in two sizes, one twice big in radius than the other. All four are put together to be heated to oven temperature. Choose the correct option from the following:
‘Gulab Jamuns’ (assumed to be spherical) are to be heated in an oven. They are available in two sizes, one twice bigger than the other. Pizzas (assumed to be discs) are also to be heated in the oven. They are also in two sizes, one twice big in radius than the other. All four are put together to be heated to oven temperature. Choose the correct option from the following:
CBSE | Class 11 | NCERT Exemplar | Physics | Thermal Properties of Matter
‘Gulab Jamuns’ (assumed to be spherical) are to be heated in an oven. They are available in two sizes, one twice bigger than the other. Pizzas (assumed to be discs) are also to be heated in the oven. They are also in two sizes, one twice big in radius than the other. All four are put together to be heated to oven temperature. Choose the correct option from the following:

a) both size gulab jamuns will get heated at the same time

b) smaller gulab jamuns are heated before bigger ones

c) smaller pizzas are heated before bigger ones

d) bigger pizzas are heated before smaller ones

Answer:

The correct options are

b) smaller gulab jamuns are heated before bigger ones

c) smaller pizzas are heated before bigger ones

Because of the lower heat radiation, the object with the smallest surface area will be heated first.

i

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