Wave Optics Tes...

The limit of resolution of microscope, if the numerical aperture of microscope is 0.12, and the wavelength of light used is 600 nm, is 

In Young's double slit experiment the intensity of the maxima is $$I$$. If the width of each slit is doubled, the intensity of the maxima will be:

Light waves travel in vaccum along the y-axis. Then the wave front is:

If accelerating potential increases from $$20\ KV$$ to $$80\ KV$$ in an electron microscope, its resolving power $$R$$ would change to

The magnitude of magnifying power of an astronomical telescope is 5, the focal power of its eyepiece is 10 diopters. The focal power of its objective (in diopters) is

A telescope has an objective lens of 10 cm diameter and is situated at a distance of $$1km$$ for two objects. The minimum distance between these two objects, which can be resolved by the telesope, when the mean wavelength of light is 5000Å is of the order of

The resolution limit of the eye is $$1'$$. At a distance $$x\ km$$ from the eye, two persons stand with a lateral separation of 3 meter. For the two persons to be just resolved by the naked eye, $$x$$ should be:

Which of the following is correct ?

Two point white dots are $$1\ mm$$ apart on a black paper. They are viewed by eye of pupil diameter $$3\ mm$$. Approximately, what is the maximum distance at which these dots can be resolved by the eye? (Take wavelength of light $$= 500\ nm$$)

A person wants to see two pillars from a distance of 11 km, separately. The distance between the pillars must be approximately