Question

If solar constant is equal to 2 cal(minute)-¹ cm-², its value in S.I.system is​

Answer 1

Answer:

1400 wm-2.8.4.wm-2.140 wm.2.4.2wm-2.

Answer 2

Answer:

If the solar constant is equal to $2$ $\frac{cal}{min.cm^{2} }$, then its value in S.I system is $1400$ $\frac{W}{m^{2} }$.

Explanation:

In cgs system, calories are used to measure energy. While, in S.I system, energy is measured in terms of Watts.

To get solar constant value in S.I system, cgs units are converted into S.I system as follows.

That is, $1$ $\frac{cal}{min}$ = $0.070$ $Watts$ and

            $1$ $cm^{2}$ = $({10^{2}})^2$ $m^{2}$

On substituting the values, $2$ $\frac{cal}{min.cm^{2} } =$ $2$  × $\frac{0.070}{(10^{2} )}^2}$ $\frac{W}{m^{2} }$

                                                             $=$ $2$ × $0.070$ × $10^{4}$ $\frac{W}{m^{2} }$

                                                             $= 1400$ $\frac{W}{m^{2} }$.

Thus, the value of $2$ $\frac{cal}{min.cm^{2} }$ solar constant, in S.I unit is $1400$ $\frac{W}{m^{2} }$.