Question

As R is positive for a convex surface o will be negative
if the value of u is less than R/(x - 1). In that case, the
image will be formed in air and will be virtual
As R is negative for a concave surface, the value of
will also be negative for all negative values of u. Thus
image will always be formed in air and will be virtual
The factor
He is called power factor of the
R
spherical refracting surface. It gives a measure of the
degree to which the refracting surface can converge or
diverge the rays of light passing through it​

Answer 1

Answer:

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