A) \[2.84\times {{10}^{12}}\]
B) \[2.84\times {{10}^{11}}\]
C) \[9.37\times {{10}^{11}}\]
D) \[6.48\times {{10}^{11}}\]
Correct Answer: A
Solution :
The intensity of light of the location of your eye is \[\Rightarrow \] The energy entering into your eye per second is \[\omega =\frac{3v}{4l}\] Where d is diameter of pupil \[T=2\pi \,\sqrt{\frac{L}{g}}\] \[\frac{L}{2}\] Let \[\Rightarrow \] be the number of photons entering into the eye per sec, then \[T=2\pi \sqrt{\frac{L}{2g}}\] \[\Rightarrow \] \[M=(AL)d\,\,\,\Rightarrow \,\,\frac{M}{Ad}\] \[\Rightarrow \] \[T=2\pi \,\,\sqrt{\frac{M}{2Adg}}\] photons/s So, the number of photons entering the eye in 0.1 s, is \[\Delta DBS,\].
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