2 Only 1 mm diameter needles will float 3 Only needles with

Last updated: 6/11/2023

2 Only 1 mm diameter needles will float 3 Only needles with diameters 1 mm and 2 5 mm will float 4 All needles will sink 23 A boundary separates two media of refractive index 1 and 1 5 as shown A parallel beam of light is incident on the boundary from left and get focussed at 2 0 where axes and origin are mentioned in the diagram pre rom simple p 1 1 Boundary is circular in xy plane 2 Boundary is parabolic in xy plane 1 3 Slope of boundary has a value 4 les will st 4 At origin boundary has a radius Gary 50 1 1 5 at 1 1 units X