Light – Reflection and Refraction

In mirrors, the distance of the virtual image from the pole is taken as __________.

Distance from the pole to the center of curvature is known as the __________.

A ray of light strikes a convex mirror parallel to the principal axis. After reflection, it appears to come from __________.

The center of the sphere of which the reflecting surface of a spherical mirror forms a part is called:

If an object is placed at infinity in front of a concave mirror, the size of the image is:

The distance of a real object ($u$) from a mirror is always:

A mirror formula is applicable to:

If $m = -1$, the object is placed at which point of a concave mirror?

The straight line passing through the pole and the center of curvature of a spherical mirror is the:

Refractive index of water with respect to air is 4/3. What is the refractive index of air with respect to water?

A ray of light traveling in air strikes a glass slab at an angle. The angle of refraction is always:

Atmospheric refraction causes the sun to be visible about:

The distance between the optical center and the principal focus of a lens is known as the:

What is the power of a thick plane glass sheet?

If the magnification $m$ is positive, the image formed by the lens is:

In the lens formula, if $u$ is negative and $v$ is positive, the term $(-1/u)$ becomes:

If the focal length of a lens is doubled, what happens to $1/f$?

The ratio of the size of the image to the size of the object is called:

Which of these lenses has the shortest focal length?

A lens has a power of $+0.5\text{ D}$. What is its focal length?

The power of a lens is $P$. If the focal length is expressed in centimeters ($f_{cm}$), the formula for $P$ is: