1.Which of the following statements is true/correct?a.During clear nights, the temperature rises steadily upward near the ground levelb.Newton's law of cooling, an approximate form of Stefan's law, is valid only for natural convectionc.The total energy emitted by a black body per unit time per unit area is proportional to the square of its temperature in the Kelvin scaled.Two spheres of the same material have radii 1 m1\,\text{m}1m and 4 m4\,\text{m}4m and temperatures 4000 K4000\,\text{K}4000K and 2000 K2000\,\text{K}2000K respectively. The energy radiated per second by the first sphere is greater than that radiated per second by the second sphereLogin to continueOnly logged in users canattempt or see the solution.
