Shown plane mirror is lying in $\mathrm{y}-\mathrm{z}$ plane. A particle $\mathrm{P}$ has velocity $\overrightarrow{\mathrm{u}}=5\hat{\mathrm{i}}+6\hat{\mathrm{j}}$ at $\mathrm{t}=0$ & acceleration $\overrightarrow{\mathrm{a}}=2\mathrm{t}\hat{\mathrm{j}}$. velocity of its image at $\mathrm{t}=2\mathrm{s}$ relative it is 

 

There are two plane mirror with reflecting surfaces facing each other. Both the mirror are moving with speed $\mathrm{v}$ away from each other. A point is placed between the mirror. The velocity of the image from due to n-th reflection will be-

In the digram shown, all the velocities are given with respect to earth. What is the relative velocity of the image in mirror (1) with respect to the image in the mirror (2)? The mirror (1) forms an angle $\mathrm{\beta }$ with the vertical.

A point source of light $\mathrm{S}$ is placed in front of two large mirror as shown. Which of the following observers will be see only one image so $\mathrm{S}$ ?

A ray of light is incident oa a concave mirror. It is to the principal axis and its height from principal axis is equal to the focal length of the mirror. The ratio of the distance of point $\mathrm{B}$ to the distance of the focus from the centre of curvature is ($\mathrm{AB}$ is reflected ray)

What is the length of the image of the rod in mirror, according to the observer in air? (refractive index of the liquid is $\mathrm{\mu }$)