(1) A triangular glass prism has a refractive angle of 60°.If the minimum deviation by a ray of light passing through the glass is 42°. The refractive index is ??
(2) What is the critical angle for a transparent plastic of refractive index 2.15 immersed in oil of
refractive index 1.60
(3) In a rectangular prism, increasing the angle of incidence beyond the critical angle produces
(4) Images formed by convex mirrors are always
(5) Images formed by a plane mirror are always
(7)) A motorist switches on their headlights. If the distance along the copper connecting wires
between the car battery and the one of the light is 1.5m, what is the average time an individual
electron will take to drift between the battery and the light? take the current in the wire to be 3A and
the cross sectional area of the wire to be 3X10-7m.
(8) The image formed by a diverging lens is always​