Posted by **Agu** on Monday, April 8, 2013 at 11:55pm.

An object is placed (a)6cm (b)20 from a thin convex lens of focal length 10cm.determine the nature,position and magnification of the image in each case.

- physics -
**drwls**, Tuesday, April 9, 2013 at 2:21am
(a) and (b) are separate problems, not multiple choices.

For the first case, letting di be the image distance from the lens, use the standard lens equation

1/6 + 1/di = 1/f = 1/10

1/di = 6/60 - 10/60 = -4/60 = -1/15

di = -15 cm

The image is "virtual" upright and magnified by a ratio |15/6| = 2.5

Now you do case b

- physics -
**ugochukwu**, Thursday, March 10, 2016 at 4:39pm
i dn't no the answer for case b pls help me

## Answer This Question

## Related Questions

- physics - An object is placed (a) 6cm (b) 20cm from a thin convex lens of focal ...
- marymount academy - 1.An object 2.5cm high is placed 10cm from a converging lens...
- physics - an object is placed 15 cm in front of a convex lens of focal length ...
- calculus problem - the thin lens equation in physics is 1/s+1/S=1/f where s is ...
- Physics: Lenses - 1) A convex lens with a focal lenght of 4.0cm is placed 20.0cm...
- Physics - A convex lens of focal length 10 cm forms image of object placed 30 ...
- Science Important - 1. A toy of height 18.4 cm is balanced in front of a ...
- physics - Two converging lenses, having focal length 5 cm and 10 cm respectively...
- Physics - An object is placed 30mm in front of a lens. An image of the object is...
- physics - Because a concave lens cannot form a real image of a real object, it ...

More Related Questions