A Concave Mirror Of The Radius Of Curvature R

A Convex Mirror Of Radius Of Curvature R

A concave mirror of radius of curvature R has a circular outline of radius r. A circular disc is to be placed normal to the axis at the focus so that it collects all the light that is reflected from the mirror from a beam parallel to the axis. For r gt gt R , the area of this disc has to be at least

A double convex lens ( R_(1)=R_(2)=10 cm ) having focal length equal to the focal length of a concave mirror. The radius of curvature of the concave mirror

A small sphere is placed on a concave mirror of radius of curvature 'R' a little away from the centre.When the sphere is released it oscillates.Assuming the oscillation to be simple harmonic its time period is

A point object at a distance 5R/3 from the pole of a concave mirror. R is the radius of curvature of mirror. Point object oscillates with amplitude of 1mm perpendicular to the principal axis. Position of image when object is at O is :

A point object at a distance 5R/3 from the pole of a concave mirror. R is the radius of curvature of mirror. Point object oscillates with amplitude of 1mm perpendicular to the principal axis. The amplitude of image is

A concave mirror has radius of curvature of 30 cm. Find its focal length