If in a turning operation both the feed rate and the nose

If in a turning operation both the feed rate and the nose radius are doubled the surface finish value will be

1. Decreases by 50%
2. Increases by 300%
3. Increases by 100%
4. Remains unaffected

H_max1 =	f2
	8R

H_max2 =	(2f)²	=	2f²
	8 &time; (2R)		8R

High of surface roughness be doubled means surface finished hill be decreased by 50%