List of top Physics Questions on Optical Instruments asked in MHT CET

To improve the resolving power of a compound microscope we should

In an optical instrument- microscope, the wavelength of light used are \(λ_1 = 6800\) Å and \(λ_2 = 5100\) Å. The ratio of the resolving power of microscope corresponding to '\(λ_1\)' to that for '\(λ_2\)' is

A simple microscope is a combination of two lenses in contact. Their powers are \(+20\text{D}\) and \(-4\text{D}\). The distance of distinct vision is \(25 \text{cm}\). When seen through the microscope, the size of the image of an object \(3 \text{mm}\) high is

In telescopes for a given wavelength, the objectives with large aperture are used for

A simple microscope is used to see the object first in blue light and then in red light. Due to the change from blue to red light, what is the effect on its magnifying power?

For large magnifying power of a telescope

Resolving power of a telescope can be increased by increasing

The length of the compound microscope is $15\text{ cm}$ . The magnifying power for relaxed eye is 25 . If the focal length of eye lens is $6\text{ cm}$ then the object distance for objective lens will be}

Resolving power of a telescope can be increased by increasing

Resolving power of a telescope can be increased by increasing

The clarity of the image formed on the retina of the eye depends on the ____

The intermediate image formed by an objective lens of a compound microscope is

The magnifying power of a refracting type of astronomical telescope is $m$. If focal length of eyepiece is doubled then the magnifying power will become