Optics Answers

What is the refractive index in air

What is the apparent relative movement of two aligned objects when they are not at the same distance from an observer

newton ring are formed in reflected light of wavelength 6000A with a liquid between the plane and curved surface .if the diameter of the 6th bright ring is 3.1mm and radius of curvature of curved surface if 100cm calculate the index of the liquid sir answer plz

Newton's rings are formed between a lens and a flat glass surface of wavelength of 5088*10^-7 m. If the right passes through the gap at 30 degree to the vertical and the fifth dark ring is of diameter 9mm. What is the radius of curvature of lens ?

c) Design a bushed pin type flexible coupling to connect a motor shaft to a pump shaft transmitting 20kW power at 1440 rpm. The allowable shear and crushing stress for steel shafts,keys and pins are 40 MPa and 80 MPa respectively. The allowable shear iron flange is 10 MPa and the allowable bearing pressure for rubber bush is 0.5 Mpa

what is a normal ?
what is an incident ray ?
what is a reflected angle?
what is a laterally inverted ?
what is a virtual image ?
state law of reflection

Calculate the angle of minimum deviation of a prism if its
refracting angle is 60o
. The refractive index of the material of the
prism is 1.632

When a mirror is rotated through an angle theta, the reflected ray is rotated through an angle?

A ray of light strikes a surface of glass at an incident angle of 60o
with the normal. Calculate the angle of refraction in the glass.
The refractive index of the glass is 1.5. (Assume that the incident
ray is in air.)

Do light waves of different colours all travels at the same speed in
glass? Explain.
b) Determine the speed of yellow light with wavelength λ = 589 nm
in diamond. The refractive index of diamond is 2.42.