Consider laminar flow of water over a flat plate of length

Consider laminar flow of water over a flat plate of length 1 m. If the boundary layer thickness at a distance of 0.25 m from the leading edge of the plate is 8 mm, the boundary layer thickness (in mm), at a distance of 0.75 m, is ______

∴	δ	=	k	, here ‘k’ is constant
	x		√x

∴	δ₁	=	δ₂
	√x₁		√x₂

∴	8	=	δ₂	∴ δ₂ = 13.86 mm.
	√0.25		√0.75

∵	δ	=	0.60
	x		√Re_x

or	δ	=	0.60	=	0.60√v
	x		√xu_∞/v		√x.√u_∞/v

∵ √v and √u_∞ is constant in both the cases