Draw a ray diagram to show that the depth of a vessel containing water when seen from above, appears to be less than its real depth.
Write true or false
Rays of light incident parallel to the principal axis pass through the focus after reflection from a concave mirror.
Select the correct alternative
The angle between the normal and refracted ray is called
- angle of deviation
- angle of incidence
- angle of refraction
- angle of emergenc
Fill in the blank
The angle of incidence for a ray of light passing through the centre of curvature of a spherical mirror is .......