Question

If You Understand my Writing... ♥...Answer...♥​

Answer 1

The ray of light which is incident normally on a plane glass slab passes undeviated. That is such a ray suffers no bending at the surface because here the angle of incidence is 0°. Thus if angle of incidence ∠i = 0°, then the angle of refraction ∠r = 0°. And the angle of deviation of the ray will also be 0°.

Answer 2

YEAH BUDDY I CAN UNDERSTAND YOUR WRITING

The permeability of a membrane is the property of membrane by virtue of which it allows only selective substance to pass through it. The selection is based on various factors like size, charge, solubility and saturation.

Cell wall is the simplest example of a permeable membrane which allows all types of water, free ions and substance that are soluble in water.

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# justinsagat510