Find the position and magnification of the image of an object placed at distance of 8.0 cm in front of a convex lens of focal length 10.0 cm. Is the image erect or inverted?

The least distance of distinct vision of normal eye is:

1. 25 mm
2. 25 cm
3. 2.5 cm
4. 20 mm

The maximum magnifying power of a convex lens of focal length 5 cm can be :

1. 25
2. 10
3. 1
4. 6

The human eye is not able to see an object distinctly if it subtends an angle :

1. equal to 10'
2. less than 1'
3. more than 1'
4. more than 5'