A block of steel heated to $100^{\circ} C$ is left in a room to cool. Which of the curves shown in figure depicts the correct behaviour?

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A A
According to Newton's law of cooling $Q = h A Δ T$ , if temperature different between body & surrounding is large, then rate of cooling is also fast.
Hence, curve A shows correct behaviour.

Suggest Corrections

Similar questions

Q. A block of steel heated to 100

^{o}

C is left in a room to cool. Which of the curve shown in the figure, represents the correct behaviour?

Q. A block of steel is heated at

100^{o} C

is left in room to cool. Which of the curves shown in figure represents the correct cooling behavior?

Q. A solid sphere, a cube and a plate, are made of the same material and all have same mass. These are heated to a temperature

100^{\circ} C

and then allowed to cool at the temperature of the room. Which of these will cool down first –

Q. A solid sphere, a cube and a plate, are made of the same material and all have same mass. These are heated to a temperature

100^{\circ} C

and then allowed to cool at the temperature of the room. Which of these will cool down first –

. Water and turpentine oil (specific heat less than that of water) are both heated to same temperature. Equal amounts of these placed in identical calorimeters are, then left in air. ‘T’ is temperature of body and t is time taken to cool, then

Join BYJU'S Learning Program

A block of steel heated to 100∘C is left in a room to cool. Which of the curves shown in figure depicts the correct behaviour?

The correct option is A AAccording to Newton's law of cooling Q=hAΔT, if temperature different between body & surrounding is large, then rate of cooling is also fast. Hence, curve A shows correct behaviour.

A block of steel heated to $100^{\circ} C$ is left in a room to cool. Which of the curves shown in figure depicts the correct behaviour?

The correct option is A A
According to Newton's law of cooling $Q = h A Δ T$ , if temperature different between body & surrounding is large, then rate of cooling is also fast.
Hence, curve A shows correct behaviour.