Where is a reflection seen?

The phenomena of total internal reflection is seen when angle of incidence is

When two plane mirrors subtend an angle theta between them, then a ray of light incident parallel to one of them retraces its path afer n reflections such that ntheta=c (where c is constant) If the angle between mirrors is 60^(@) . Then light ray retraces its path after n reflections where n is

The reflective surface is given by y=2 sinx . The reflective surface is facing positive axis. What is the least value of coordinate of the point where a ray parallel to positive x -axis becomes parallel to positive y -axis after reflection?

The (A)____ venation in (B)____ leaves is reflected in the near similar sizes of vascular bundles (except in main veins) as seen in vertical section of the leaves.

Statement I : Due to diffused of irregular reflection of light, a closed room gets light even if no direct sunlight falls falls inside the room. Statement II : Irregular reflection, where the reflected rays are not parallel, does not follow the laws of reflection.

The reflection of point P(2,-1) in line y=3x-1 is Q and reflection of P in line y=9-2x is R .thencircumcentre of APQR is (a,b), where (a+b) is equal to

The inner surface of the wall of a sphere is perfectly reflecting. Radius of the sphere is R. A point source S is placed at a distance R//2 from the centre of the sphere. Consider the reflection of light from the farthest wall followed by reflection from the nearest wall. Where is the image of the source? Consider paraxial rays only.

Consider a point A(m,n) , where m and n are positve intergers. B is the reflection of A in the line y=x , C is the reflaction of B in the y axis, D is the reflection of C in the x axis and E is the reflection of D is the y axis. The area of the pentagon ABCDE is.

Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection?

A waves undergoes reflection at a rigid wall The parameter changed during this reflection is