If the light approaches the mirror along the normal (perpendicular to the mirror), then it reflects
back in the same direction from which it came.
In that event, the angle of reflection is still equal to the angle of incidence . . . they're both zero.
Yes, it is true that rays traveling parallel to the principal axis of a concave mirror will reflect out through the mirrors focus.
If the rays go parallel to the axis of mirror then after reflection the rays would converge at one point. this point is named as FOCUS
Through the mirror's focal point
true
focus
focus
That passes through the principal focus of the concave mirror
It is reflected back parallel to the principal axis. (apex)
The concave mirror reflects the bulb's light, and if the bulb is at the mirror's focus, sends it out as a parallel beam.
Rays which are parallel to the axis of the concave mirror will converge to the focal point.
focus
That passes through the principal focus of the concave mirror
no
true
It is reflected back parallel to the principal axis. (apex)
The concave mirror reflects the bulb's light, and if the bulb is at the mirror's focus, sends it out as a parallel beam.
Rays which are parallel to the axis of the concave mirror will converge to the focal point.
It should be parallel. Rays "parallel to the principle axis of a concave mirror converage at or near the focal point.
No, a heptagon cannot be parallel but two heptagons can.A heptagon can be concave.
In the case of concave mirrors parallel rays, parallel to the principal axis and incident near the pole(axial rays), after reflection will converge to the principal focus.Rays reflected from the marginal portions of the mirror(marginal rays) will converge to points nearer than the focus. Due to this the image formed by a concave mirror of large aperture will be blurred. This defect is called spherical aberration. This defect can be overcome by using parabolic mirrors. In a parabolic mirror all the rays, axial rays as well as the marginal rays, incidenting on it after reflection will converge to the same principal focus. This is due to the geometric property of the parabola, that is parabola allows only one focus.Hence in a parabolic mirror there is no spherical aberration and the image will be sharp and clear.
Angles cannot be parallel.
Parallel rays approaching the mirror are reflected in a converging manner to a focal point.