If a ray of light in glass is incident on an air surface at
an angle greater than the critical angle, the ray will:
The distance between principal focus and pole of mirror is
called:
The more negative potential of grid, the more electrons will
be:
We can distinguish between the notes of a piano and flute
due to ………… of sound.
An object is placed at the Centre of curvature of a concave
mirror. The image produced by the mirror is located:
