A real object is 30 cm from a concave mirror of focal length 20 cm and moves at 10 cm/s making 37° with the axis. Use cos37°=4/5. Find the magnitude of the image's axial velocity component in cm/s.

Physics · Geometrical optics · spherical mirror

JEE MainsNEET

A real object is 30 cm from a concave mirror of focal length 20 cm and moves at 10 cm/s making 37° with the axis. Use cos37°=4/5. Find the magnitude of the image's axial velocity component in cm/s.