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?
An object of heights 5 cm is placed at 20 cm from a concave mirror of focal length 10 cm. the image height is?
Convex mirror are used as driving mirrors because images formed are?
An object placed at the bottom of a well full of clear water appears closer to the surface due to?
In the microscope, the eyepiece lens merely acts as?
