Ray Optics Physics - Ray Optics

Critical angle is that angle of incidence in the denser medium for which the angle of refraction in rarer medium is(a) 0° (b) 57°(c) 90°(d) 180°

A plane mirror makes an angle of 30° with horizontal. If a vertical ray strikes the mirror, find the angle between mirror and reflected ray(a) 30°(b) 45° (c) 60° (d) 90° 

A plane mirror produces a magnification of(a) -1(b) +1(c) Zero(d) Between 0 and +∞

A ray of light is incidenting normally on a plane mirror. The angle of reflection will be(a) 0°(b) 90°(c) Will not be reflected(d) None of the above

When a plane mirror is rotated through an angle θ then the reflected ray turns through the angle 2θ then the size of the image(a) Is doubled(b) Is halved(c) Remains the same(d) Becomes infinite