Q.1.
The power of a lens (SI system) can be calculated using which of the following formulae?
Q.2.
In the eye, which of the following parts does light NOT travel through?
Q.3.
A lens which focuses light to a point is called a what?
Q.4.
What is the unit of power for a lens?
Q.5.
What part of the eye focuses the light?
Q.6.
What is chromatic aberration?
Q.7.
What is the focal length of a lens which has a power of 0.5?
Q.8.
What is the power of a lens dependent on?
Q.9.
What is the power of lens which has a focal point of 20 cm?
Q.10.
Calculate the power of a converging lens of focal length 0.05 m.