Answer and Explanation:
In optics, a CoC(Circle of Confusion) is defined the minimum cross section of a paraxial bundle of rays made by a lens which is sphero-cylindrical type and can be viewed as an optical spot, which do not converge perfectly at the focus while a point source is being imaged due to spherical aberration.
The Circle of Confusion is also referred to as circle of indistinctness or a blur spot
The answer is “Impulse acting on it” according to the impulse-momentum theorem.
Answer:
Scientific Notation: 3.45 x 10^5
E Notation: 3.45e5