Embibe Experts Solutions for Exercise 1: EXERCISE

Nature of image of a real object formed by convex mirror is always

Magnification produced by a convex mirror is $\frac{1}{3},$ then distance of the object from mirror is

A concave mirror is half dipped in water. The focal length of the portion of the mirror is the air is $f_1$ and the focal length of the mirror in water is $f_2,$ then (Take the refractive index of water $=\frac{4}{3}$)

Lateral magnification of objective of compound microscope is $100$ and angular magnification of its eyepiece is $20.$ The magnifying power of compound microscope is

Focal length of objective eye piece and inverting lens of a terrestrial telescope are $20 \mathrm{cm}, 10 \mathrm{cm}$ and $5 \mathrm{cm}$ respectively. Length of the tube containing these lenses at normal adjustment is

Advantages of cassegrain telescope is/are

A telescope with objective of focal length $60 \mathrm{cm}$ and eye piece of focal length $5 \mathrm{cm}$ is focused on a far distance object such that the parallel rays emerge from eye piece. If object subtends an angle $2°$ on objective, then angular width of the image is

Which of the following is not involved in Rainbow formation?