Category: 4. Patwari (HP), JBT (HP)

When bright sunlight suddenly falls on your eyes, which immediate change happens to protect the retina? A Pupil shrinks quickly

Which part of the eye is the transparent front covering that first bends incoming light? A Cornea B Retina C

If angle between incident ray and reflected ray is 120°, the angle of incidence is A 30° B 45° C

A plane mirror shows a person’s right hand as left due to A Multiple reflection B Refraction effect C Lateral

When light reflects from a smooth surface, the path follows the law of A Dispersion B Reflection C Diffraction D

In a ray diagram, the “incident ray” is the ray that A Leaves the mirror B Strikes the surface C

In reflection from a mirror, the “normal” is the line A Along the mirror B Along incident ray C Along

In a dim room, you see dust “dancing” in a sunbeam mainly because dust particles A Emit their own light

In a dark room, a red rose is lit by a torch; you see it mainly because light from the

When a room is lit but a cupboard interior looks dark, the best reason is that A Light doesn’t reach