A) \[1.5\times {{10}^{13}}\]
B) \[2.9\times {{10}^{13}}\]
C) \[2.3\times {{10}^{19}}\]
D) \[1.75\,\times {{10}^{19}}\]
Correct Answer: C
Solution :
Energy received from the sun \[\frac{\lambda }{\sigma \rho }\] \[\rho \lambda \sigma \] Energy of 1 photon received from sun, \[({{T}_{i}})\] \[({{T}_{n}})\] \[{{T}_{i}}-{{T}_{n}}={{T}_{n}}-T\] Number of photons reaching the earth per \[{{T}_{i}}=2{{T}_{n}}-T\] per minute will be \[{{0}^{o}}C\] \[{{T}_{n}}=\frac{{{T}_{i}}}{2}\]
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