A person with a normal near point (25 cm) using a compound microscope with objective of focal length 8.0 mm and an eyepiece of focal length 2.5 cm can bring an object placed at 9.0 mm from the objective in sharp focus.What is the separation between the two lenses?Calculate the magnifying power of the microscope.

The intensity at the central maxima (O) in a Young's double experiment is \(I^o\). If the distance OP equals one-third of fringe width of the pattern, show that the intensity at point P would be I₀ / 4

A container is filled with water (\(\mu \) = 1.33) upto a height of 33.25 cm. A concave mirror is placed 15 cm above the water level and the image of an object placed at the bottom is formed 25 cm below the water level. What will be the focal length?

Can reflection result in a plane polarised light, if the light is incident on the interface from the side with higher refractive index?

In an experiment with two coherent sources, the amplitude of the intensity variation is found to be 5% of the average intensity. What will be the relative intensities of the light waves of interfering source.