Q10 of 27 Page 79

‘Gulab Jamuns’ (assumed to be spherical) are to be heated in an oven. They are available in two sizes, one twice bigger (in radius) than the other. Pizzas (assumed to be discs) are also to be heated in 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:

As we know, material whose surface area less will get heated before than the more surface area.

Hence options (b) and (c) are correct and rest options are wrong.

More from this chapter

All 27 →
8

A sphere, a cube and a thin circular plate, all of same material and same mass are initially heated to same high temperature.

 9

Mark the correct options:

 11

Refer to the plot of temperature versus time (Fig. 11.2) showing the changes in the state of ice on heating (not to scale).

Which of the following is correct?


 12

A glass full of hot milk is poured on the table. It begins to cool gradually. Which of the following is correct?