Anil Ahlawat Solutions for Chapter: Light, Exercise 1: EXERCISES

A narrow beam of white light is passed through a glass prism as shown in the figure.

Which of the following is the correct order of colours emerging from the prism?

A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves the source of light away from the lens on its principal axis, the intensity of light

Three light bulbs are concealed from an observer by an opaque wall as shown. Without shifting the positions of the observer and the bulbs, the images of which of the bulbs can the observer see from the plane mirror?

Match the column I with column II and column III and select correct option from the codes given below. (Note: These columns are for convex lens.)

Read the given statements and select the correct option.
Statement $1$: A beam of light emitted by the point source placed in water always diverges in air.
Statement $2$: The refracted ray moves away from normal when a ray goes from a denser medium to a rarer medium.

Consider the following statements and select the option which correctly identifies true (T) and false (F).
$\left(\mathrm{i}\right)$ Part that gives colour to the eye is iris.
$\left(\mathrm{ii}\right)$ Transparent outer layer that refracts light is lens.
$\left(\mathrm{iii}\right)$ Retina is a light sensitive layer of the eye.
$\left(\mathrm{iv}\right)$ Cornea is a region without any sensory cells.

Two plane mirrors $\mathrm{AB}$ and $\mathrm{CD}$ are placed at right angles to one another. A ray of light $\mathrm{PQ}$ hits $\mathrm{AB}$ at $\mathrm{Q}$ making an angle of $45°$ as shown in the diagram. This ray will be reflected from mirror $\mathrm{CD}$ at an angle ______.

In the diagram, the coin is just out of sight. If water is poured into the metal can, the coin will