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CBSE Class 10 Answered

What is the focal length and power of eye lens of a healthy person
Asked by saradamahapatra9999 | 12 Feb, 2020, 10:24: AM
answered-by-expert Expert Answer
The focal length of normal human eye is 1.7 cm and thus the power of normal human eye is approximately equal to 60 dioptres. 
Answered by Shiwani Sawant | 12 Feb, 2020, 12:43: PM

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CBSE 10 - Physics
the violet light have smaller wave length then blue light so why the sky colour is not violet?
Asked by saritavishwakarma1986 | 04 Jan, 2024, 12:23: PM
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Amit suffering from myopia is not able to see distantly the objects placed beyond five from his eyes. List possible reason due to which this defect of vision may have a rising. With the help of a diagram explain;   (a) why the student is unable to see the           objects placed beyond 5 metre.  (b) type of corrective lens used to restore        proper vision and how is defect is                corrected by the use of this lens.  (C) if in this case,  the numerical value of the focal length of the corrective lens is 5 metre find the power of the lens as per the new cartesian sign convention
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