To obtain a magnified image at distance of distinct vision with a simple microscope, where should the object be placed ?

To obtain maximum magnification with a simple microscope, where should the eye be placed ?

Define the least distance of distinct vision. What is its value ?

The image of an object formed by a mirror is real, inverted and is of magnification - 1. If the image is at the distance of 30 cm from the mirror. (i) Where is the object placed ? (ii) Find the position of the image object is now moved 20 cm towards the mirror. (iii) What is the nature of the image obtained ? Justify your answer with the help of ray diagram.

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

The least distance of distinct vision for a young adult with normal vision is about