Angle of friciton `(theta)` and angle of repose (a) are related as

Explain the phenomenon of refraction through prism. Derive the following relation between angle of prism and angle of deviation. angle i+angle e=angle A+angle delta .

Define angle of repose and show that the coefficient of limiting friction is equalto tangent of repose. Hence show that angle of epose is equal to angle of friction.

Define the terms angle of dip. Derive the relation between angle of dip and the resultant magnetic field of earth at a place.

Draw a ray diagram to show the refraction of light through a glass prism. Hence obtain the relation for the angle of deviation in terms of the angle of incidence, angle of emergence and the angle of the prism.

The critical angle between a given trasparent medium and air is denoted by C.A ray of light in air medium enters this transprent meidum at an angle of incidence equal to polarising angle p.Deduce a relation for the angle of refraction in terms of C.

The angle of dip is theta at a place, where the horizontal and vertical componetns of earth's magnetic fiels are equal . The value of theta is