Compound Microscope

IMPORTANT

Compound Microscope: Overview

This topic covers concepts, such as, Compound Microscope, Eyepiece of Microscope, Objective of Microscope, Magnifying Power of Microscope & Apparent Size of an Object etc.

Important Questions on Compound Microscope

EASY
IMPORTANT

The expression for magnifying power of compound microscope is

EASY
IMPORTANT

In a compound microscope, the intermediate image is

MEDIUM
IMPORTANT

The focal lengths of the objective and the eye piece of a compound microscope are 2.0 cm and 3.0 cm, respectively. The distance between the objective and the eye piece is 15.0 cm. The final image formed by the eye piece is at infinity. The two lenses are thin. The distance in cm of the object and the image produced by the objective, measured from the objective lens, are respectively

EASY
IMPORTANT

What is the relation between visual angle and apparent size.

EASY
IMPORTANT

Define visual angle. 

EASY
IMPORTANT

What is the relation between visual angle and Apparent size

EASY
IMPORTANT

What is the unit of visual angle.

EASY
IMPORTANT

What angle subtended is the minimal visual acuity

EASY
IMPORTANT

Is a microscope eyepiece always 10x?

EASY
IMPORTANT

In a compound microscope, the objective and eyepiece have focal length of 0.95 cm and 5 cm, respectively and are kept at a distance of 20 cm. The final image produced by this compound microscope is at a distance of 25 cm from eyepiece. The total magnification is

EASY
IMPORTANT

The focal length of the objective of a microscope is

HARD
IMPORTANT

In a compound microscope the focal length of objective lens is 1.2 cm and focal length of eye piece is 3.0 cm. When object is kept at 1.25 cm
in front of objective, final image is formed at infinity. Magnifying power of the compound microscope should be :

MEDIUM
IMPORTANT

In a compound microscope, if the objective produces an image I0 and the eyepiece produces an image Ie, then choose correct statement:

MEDIUM
IMPORTANT

How can you differentiate between a compound microscope and a telescope just by looking at it? 

EASY
IMPORTANT

Final image obtained from a compound microscope is-

MEDIUM
IMPORTANT

Final image obtained from a compound microscope is -

EASY
IMPORTANT

A compound microscope consists of an objective lens with focal length 20 cm the magnification will be

EASY
IMPORTANT

The objective lens and eye piece lens of a compound microscope have focal lengths 1.5 cm and 5 cm respectively. The object is placed at a distance 1.8 cm. What is its magnification?  ( Take the least distance of distinct vision = 24 cm)

HARD
IMPORTANT

A microscope is having an objective of focal length 1 cm and eyepiece of focal length 6 cm. If tube length is 30 cm and the image is formed at the least distance of distinct vision, what is the magnification produced by the microscope? (Take D=25 cm)

EASY
IMPORTANT

A compound microscope has an eye piece of  focal length 10 cm and an objective of focal length of 4 cm. Calculate the magnification, if an object is kept at a distance of 5 cm from the objective then final image is formed at the least distance of distinct vision