Define limit of resolution of an optical instrument .

What is the relation between limit of resolution and resolving power of an optical instrument ?

A star is emitting light at the wavelength of 5000 overset@A , Determine the limit of resolution of a telescope, having an objective of diameter of 200 inch.

Define and describe magnifying power of an optical instrument. How does it differ from Linear Magnification.

The limit of resolution of a microscope with self luminous point objects is

Answer the following questions : Observe the following figure and answer the questions :Write and brief , the working of this optical instrument.

Ray optics is based on the assumption that light travels in a straight line. Diffraction effects (observed when light propagates through small apertures/slits or around small obstacles) disprove this assumption. Yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. What is the justification?

Answer the following questions : Observe the following figure and answer the questions : Which optical instrument shows arrangement of lenses as shown in the figure ?

What is meant by limit of resolution and the resolving power of microscope ?

Answer the following questions : Observe the following figure and answer the questions How can we get different magnifications in this optical instrument ?