Optics Answers

If a single lens forms a virtual image of an object then
a) the lens must be a converging lens
B)the image must be inverted
C) the lens must be a diverging lens
D) the lens could be either a diverging or converging lens

Light from a mercury lamp falls on two slits separated by 0.6 mm, and the resulting interference pattern is observed on a screen 2.5 m away from the slits. If the adjacent bright fringes are separated by 2.27 mm, what is the wavelength of the light?

Two slits are spaced 0.3 mm apart and are placed 50cm from a screen. Suppose the entire apparatus is immersed in water. What is the distance between the second and third dark lines of the interference pattern when the slits are illuminated with the light of 600 nm wavelength?

1. Calculate the wavelength of the electromagnetic radiation with frequency 3x1014 Hz. What is the type of radiation (Gamma rays, Visible, IR etc.)?

The sodium lamp used in a physics laboratory gives out light uniformly.suppose that the lamp uses 40W. Calculate the magnitude of electric field?

Why do edges of a thin film appear dark when illuminated by monochromatic light?

A car is traveling at 40 mi/h when the driver slams on the brakes coming to rest over a distance of 68 meters. What is the acceleration of the car in m/s2?

In an experiment for determination of refractiveindex of glass of a prism by i – δ, plot, it was foundthat a ray incident at angle 35°, suffers a deviationof 40° and that it emerges at angle 79°. In that casewhich of the following is closest to the maximumpossible value of the refractive index?

Why rainbow appears curved? What is the angle of incidence and emergence out of rain drops ?

How can be calculated total focal length and power when two lenses are in contact.