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- 102

## Homework Statement

## Homework Equations

## The Attempt at a Solution

This is an example given in the book . But I am just wondering whether the question itself is correct .

How can intensity of light emitted from Sun is given a constant ? Shouldn't 1400 be the power emitted from Sun ?

If 1400 is power emitted from sun , then in part b) , n = 1400/E . We don't need radius of earth to answer part b) .

Instead we would require radius of orbit of earth to answer part a) .

This is different from what is done in the book .

Could the experts kindly let me know whether my objection is valid or not ?