MHTCET 14 May 2023 Shift 1 Solved Paper

ρ=‌

M

V

Given: three objects are of same materials ρ is same. Also, M= same,
∴ volume of objects is same.
For constant volume, amongst the given objects surface area of the plate is maximum.
Hence according to Stefan's law ‌

dQ

dt

∝AT4
As A‌plate ‌ is maximum, the plate will cool fastest and reaches room temperature fast.