VITEEE 2014 Paper
© examsiri.com
Question : 40 of 120
Marks:
+1,
-0
An eye can detect 5 x 104 photons per square meter per sec of green light (λα = 5000 Å) while the ear can detect 10 13 W/m 2 . The factor by which the eye is more sensitive as a power detector then ear is close to
Go to Question: