An object of height 4cm is placed in front of a cuboid pi...
An object of height 4cm is placed in front of a cuboid pinhole camera of size 6 cm. if the image formed is 2 cm high, how far is the object from the pinhole?
3.0 cm
8.0 cm
12.0 cm
16.0 cm
Correct answer is C
Magnification = (image height)/object height
= (lenght camera)/object distance from pin-hole
∴(2)/4 = (6)/X
X (4 x 6)/2 = 12 cm