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In the case of reflection of light from a concave mirror, when a parallel beam of light is incident on the reflecting surface, reflected light ________.
appears to converge at the centre of curvature
appears to diverge from the principal focus
appears to diverge from the centre of curvature
appears to converge at the principal focus
appears to converge at the principal focus
When a parallel beam of light falls on the reflecting surface of a concave mirror, the rays converge at a single point on the principal axis known as the principal focus after reflection.
When a parallel beam of light falls on the reflecting surface of a concave mirror, the rays converge at a single point on the principal axis known as the principal focus after reflection.
Using a concave mirror (or makeup mirror) to focus sunlight onto a single point to burn a piece of paper demonstrates the convergence of parallel rays.
Concave Converges (both start with C), Convex Diverges.
f=2RтАЛ тАФ Relationship between focal length (f) and radius of curvature (R)
A concave mirror is a converging mirror. Due to its inward-curving reflective surface, parallel incident rays (coming from a distant source like the sun) follow the laws of reflection and intersect each other at the principal focus (F).
A concave mirror is also known as a converging mirror.
Rays parallel to the principal axis pass through the principal focus after reflection.
The focal length (f) is half of the radius of curvature (R).
Used in solar cookers to concentrate sunlight.
Used in headlights and searchlights to produce a parallel beam.
Shaving and makeup mirrors
Headlights of vehicles
Astronomical reflecting telescopes
Option D correctly states that the reflected light appears to converge at the principal focus.
D is correct тАФ appears to converge at the principal focus
Remember that convex mirrors are diverging mirrors (rays appear to diverge from the focus behind the mirror), whereas concave mirrors are converging mirrors.
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