I. radiant heat cannot travel through a vacuum
II. rough surfaces emit radiant heat more than polished surfaces
III. Dark surfaces absorb radiant heat more than bright surfaces
A. I only
B. II only
C. III only
D. I & II only
E. II & III only
Correct Answer:
Option A – I only
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![An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5ºC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5ºC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]")
