Who first stated the principle of refraction that postulates that every substance has a specific bending ratio – 'refractive index'?
Willebrord Snellius
Willebrord Snellius is credited with formulating the law of refraction and the concept of the refractive index in 1621.
Similar Questions
Which one of the following processes is responsible for the glittering of air bubbles rising through water?
What was the chief objective of the 'Wahabi movement'?
What causes the mottling of the dental enamel?
Rajat has hypermetropia. What type of lens will the ophthalmologist recommend to correct his vision?
The impression of an image persists on the retina for about _________ of a second.
When light passes from one medium to another there is a change in its direction, this phenomenon is called ________.
What type of image formed by a concave mirror on the screen when the distance between object and mirror is higher than the focus?
Convex and concave mirrors are examples of?
In an optical fibre the signal is transmitted:
The side mirrors of vehicles are of which type of mirrors?
Important Questions from Optics
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
An object is placed 10 cm in front of a lens. The image formed is real, inverted and of same size as the object. What is the focal length and nature of the lens?
The power of a lens is -2.5 D. The type of lens and its focal length are respectively:
