Question

Solve it please . when one is correct (b) or (d) ???​

Answer 1

Answer:

B and D ( both are correct in my opinion)

But I would pick B

( I hope this was helpful ) >;D

The denominator sin a is the quantity well known (after Abbe) as the " numerical aperture."

Generally, to find the sum or difference of two or more fractional numbers, we must replace them by other fractional numbers having the same denominator; it is usually most convenient to take as this denominator the L.C.M.

can be applied to n, n', the denominator n remaining unaltered.

A fractional number is called a proper fraction or an improper fraction according as the numerator is or is not 3 less than the denominator; and an expression 4 such as 24 is called a mixed number.

Answer 2

Answer:

Shaam me shyd free rhunga..kuch kam hai ..??