A point source of light is placed in front of a plane mirror as shown in Figure.
Determine the length of reflected path of light on the screen `Sigma`

A point source of light S is placed in front of a perfectly reflecting mirror as shown in Figure. Sigma is a screen. The intensity at the center of screen is found to be I. If the mirror is removed, then the intensity at the center of screen would be

A point source of light S is placed in front of a perfectly reflecting mirror as shown in Figure. Sigma is a screen. The intensity at the center of screen is found to be I. If the mirror is removed, then the intensity at the center of screen would be

A point source of light S is placed in front of two large mirrors as shown. Which of the following observes will see only one image of S?

Assertion: A monochromatic source of light is placed above a plane mirror as shown in figure. Fringes will be obtained at all points above O but not below it on the screen. Reason: All reflected rays will suffer a phase difference of pi .

You are given a concave mirror of focal length 10 cm, a point source of light nad a screen placed at distance 30 cm in front of mirror. How can you obtain a bright patch of light on screen, of size equal to that of the aperture of mirror? Draw diagram to explain your answer.

When a plane wave front incident on a concave mirror as shown in figure then shape of reflected wave front just after reflection :-