X-LIGHT-Principal

The radius of curvature of a concave mirror is 20cm the focal length is-------------------

• (a) -40cm

• (b) 40cm

• (c) -10cm

• (d) 10cm

If an incident ray passes through the principal focus, the reflected ray will------------------after reflection

• (a) travel parallel to the principal axis

• (b) travel perpendicular to the principal axis

• (c) travel through the pole

• (d) travel through the centre of curvature

Which of the following mirror can diverge a parallel beam of light, when light from an object at infinity is incident on it?

• (a) Concave mirror

• (b) Plane mirror

• (c) Hollow mirror

• (d) Convex mirror

If the magnification produced by a mirror has a negative value, the image will be-------------

• (a) virtual and inverted

• (b) virtual and erect

• (c) real and erect

• (d) real and inverted

If the magnification of a spherical mirror is +0.9, the nature of the image formed would be--------------------

• (a) highly diminished

• (b) diminished

• (c) same size

• (d) enlarged