List of top Physics Questions on thermal properties of matter asked in BCECE

A baby cools from 50°C to 40°C in 5 min. The surrounding temperature is 20°C. In what further time (in minutes) will it cool to 30°C?

As temperature of a black body is raised, wavelength corresponding to maximum energy reduces. Higher temperature would mean higher energy and hence higher wavelength.

A bimetallic strip consists of brass and iron when it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because

The wavelength of maximum energy, released during an atomic explosion was $2.93 \times 10^{-10} m$. Given that the Wien's constant is $2.93 \times 10^{-3} m - K$, the maximum temperature attained must be of the order of :