wiz-icon
MyQuestionIcon
MyQuestionIcon
110
You visited us 110 times! Enjoying our articles? Unlock Full Access!
Question

A terrace floor is painted in such a way that it can cool the rooms under it.
Assertion (A): White coloured paint can be used.
Reason (R): White surface is a better emitter of heat.


A
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(A) is true, but (R) is false.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Both (A) and (R) are true, and (R) is the correct explanation of (A).
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
(A) is false, but (R) is true.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Both (A) and (R) are true, and (R) is the correct explanation of (A).

White or light-coloured surfaces emit more heat as compared to black or dark-coloured surfaces. This is because the light-coloured surfaces reflect more heat as compared to dark-coloured surfaces.
To cool the rooms under the terrace, the terrace floor is painted with white coloured paint so that it can reflect most of the sunlight back.
Therefore, white paint can be used as it is a better emmiter of heat.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Playing with Refractive Index
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon