Which of the following pairs is wrong
(b) Pyrometer is used the for measurement of temperature.
The difference in the lengths of a mean ar day and asidereal day is about
The unit of Stefan's constant is(a) W m−2 K−1 (b) W m 2 K−4(c) W m−2 K−4 (d) W m-2 K 4
Which of the following relation is wrong