Refractive index of Glycerine is
1.33
1.44
1.47
1.36
Name the scientist who is often considered as father of modern physics
Sir.Isaac Newton
Albert Einstein
Christian Huygens
Willebrord Snell
The point at which the incident ray meets the separating surface is called
Point of incidence
Point of refraction
Point of diversion
None of these
The separation of a beam of white light into its constituent colours is known as
Refraction of light
Reflection of light
Dispersion of light
Which of the following help us to see tiny objects which are magnified many more times than a simple microscope ?
Compound microscope
Telescope
Stethoscope
The geometric centre of a lens is called
Centre of curvature
Principal axis
Optical centre
Principal focus
The distance by which a person cannot see nearby objects clearly is called
Hypermetropia
Myopia
Cataract
Rainbows are formed due to
Diffraction of light
Convergence of light
Divergence of light
Ultraviolet rays help to produce vitamin
Vitamin-A
Vitamin-B
Vitamin-C
Vitamin-D
The ability of the eye lens to self adjust its focal length is termed as the
Power of accomodation
Persistance of vision
