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Laws of Reflection

The laws of r...

Question

The laws of reflection hold good for:

A

Plane mirror only

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B

Concave mirror only

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C

Convex mirror only

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D

All mirrors irrespective of their shapes

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Solution

The correct option is D All mirrors irrespective of their shapes
The laws of reflection hold good for all types of mirrors. It states that the angle of incidence is equal to angle of reflection. Also, the incident ray, the normal to the reflecting surface at the point of incidence and the reflected ray, all lie in the same plane.

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Similar questions

Q. Question 13
The laws of reflection hold good for

(a) plane mirror only
(b) concave mirror only
(c) convex mirror only
(d) all mirrors irrespective of their shape

The second law of reflection is valid only for plane mirrors and not for spherical mirrors.

Q. An object is placed at a distance of

2 f

from a concave mirror. Light reflected from the mirror falls on a plane mirror. The distance of the plane mirror from the concave mirror equals

f

. The distance of the final image from the concave mirror (due to reflection at both concave and plane mirror) is :

Q. State whether the following statements are true or false. Rewrite the false statements correctly.
(a) The laws of reflection hold good only for plane mirrors and not for spherical mirrors.
(b) The radius of curvature is double the focal length of a concave mirror.
(c) A ray passing through the focus cuts through the principal axis of a concave mirror after reflection.
(d) When an object is placed between a concave mirror and its focus, the image formed is virtual, erect and larger than the object.
(e) The image formed on a cinema screen is virtual.
(f) A convex mirror is used by stage artists.
(g) A convex mirror always gives real images.
(h) A pinhole camera gives a real image.
(i) A convex surface bulges inwards.
(j) Incident rays parallel to the principal axis of a curved mirror pass through the focus after reflection.
(k) A concave mirror always forms a real image.
(l) There can be many reflected rays for a single incident ray falling on a reflecting surface.

Q. A concave mirror of focal length

10 cm

and a convex mirror of focal length

15 cm

40 cm

apart facing each other’s reflecting surface. A point object is placed between the mirror on their common axis and

15 cm

from the concave mirror. Find the position of images produced by reflection at concave mirror first and then at convex mirror.

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