The focus of a parabolic mirror as shown in the figure is at a distance of 5 cm from its vertex. If the mirror is 45 cm deep, find the distance AB.

The focus of a parabolic mirror as shown in the figure is at a distance of 6 m from its vertex. If the mirror is 20 cm deep, show that MN = 8 sqrt30 m.

Draw a line parallel to a line l at a distance of 3.5 cm from it .

If the length of a chord of a circle at a distance of 5 cm from the centre of a circle is 24 cm, find the radius of the circle.

The radius of the circle is 5 cm and distance of the chord from the centre of the circle is 4 cm. Find the length.

An object is at a distance of 10 cm from a spherical mirror and the image of the object is at a distance of 30 cm from the mirror on the same side as the object.Is the mirror concave or convex?What is its focal length?

An object is at a distance of 5 m from a convex mirror of focal length 10 cm.Where is he image formed ?

The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4 cm.Find the radius of the circle.

A concave mirror of focal length 25 cm forms the real image of a point object at a distance O lying on its principal axis at a distance of 50 cm from the mirror. The mirror is cut into two halves and are drawn a distance of 1 cm apart in the direction perpendicular to the optical axis .How will the two halves of the concave mirror produce the image of the point object O?

Find the length of a chord which is at a distance of 24 cm from the centre of a circle whose diameter is 50 cm.