What would be the path of reflected light if an incident ray passes through focus?
An incident ray passing through the focus will be reflected parallel to the principal axis.
Why the light ray retraces its path when it passes through Centre of curvature?
Answer: The reason for light falling on the centre of curvature gets reflected back along the same path is due to the angle of incidence and the angle of reflection lie along the normal for a concave mirror. Hence, the angle of reflection tends to zero degree, thus the ray of light retraces its path.
What happens when a light ray passes through the center of curvature of the mirror?
Light rays passing through the center of curvature strike the mirror and are reflected back through the center of curvature. Light rays from the object passing directly through the focal point are reflected back parallel to the principal axis.
Are passing through the Centre of curvature?
A ray of light passing through the centre of curvature of a concave mirror is reflected back along the same path because it strikes the concave mirror at right angles to its surface due to which the angle of incidence and angle of reflection both are oo.
What will be the angle of incidence when a ray of light passes through the Centre of curvature of a concave mirror?
So,the angle of incidence for a ray of light passing through the centre of curvature of a concave mirror is 00.
What is the focal length and radius of curvature of a plane mirror?
A plane mirror can be recognised as a spherical mirror of infinite radius of curvature. Focal length is half of the radius of curvature and hence it is infinity.
What will be the focal length of a lens whose power is given as 2.0 D?
Answer: Focal length f= 1/p So according to the question power is +2.0 D f= 1/2.0 = 0.5 m In centimeter …the focal length is 50cm.
What is radius of curvature formula?
The radius of curvature of a curve at a point M(x,y) is called the inverse of the curvature K of the curve at this point: R=1K. Hence for plane curves given by the explicit equation y=f(x), the radius of curvature at a point M(x,y) is given by the following expression: R=[1+(y′(x))2]32|y′′(x)|.
How do you calculate the curvature of a surface?
One way to examine how much a surface bends is to look at the curvature of curves on the surface. Let γ(t) = σ(u(t),v(t)) be a unit-speed curve in a surface patch σ. Thus, ˙γ is a unit tangent vector to σ, and it is perpendicular to the surface normal n at the same point.
What is mirror curvature?
It can also be defined as the spherical distance between the point at which all the rays falling on a lens or mirror either seems to converge to (in the case of convex lenses and concave mirrors) or diverge from (in the case of concave lenses or convex mirrors) and the lens/mirror itself.