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(a) 0 degree
(b) a convex mirror
(a) to make the image less bright than before
(d) All types of mirrors and lenses
(c) -10cm
(d) all of these
(a)focal length of concave mirror and concave lens is negative
(c) behind the mirror at a distance f/2
(d) When object is placed between its focus point and centre of curvature
(d) either a convex or a plane mirror
The angle of incidence of any light ray passing through the centre of curvature of a spherical mirror is
(a) 0 degree
(a) 0 degree
See lessA full length image of a distant tall building can definitely be seen by using
(b) a convex mirror
(b) a convex mirror
See lessA concave mirror is used to form an image of the sun on a white screen. If the lower half of the mirror is covered with a black paper, the effect on the image formed on the screen would be
(a) to make the image less bright than before
(a) to make the image less bright than before
See lessIn which of the following the image of an object placed at infinity will be highly diminished and point sized?
(d) All types of mirrors and lenses
(d) All types of mirrors and lenses
See lessan object is placed at a distance of 15cm from a concave mirror and its real image is formed at 30cm in front of that mirror. The focal length of the mirror is
(c) -10cm
(c) -10cm
See lessIn a convex mirror for any position of the object in front of mirror, the image formed is
(d) all of these
(d) all of these
See lessAs per the cartesian sign convention followed for mirrors and lenses
(a)focal length of concave mirror and concave lens is negative
(a)focal length of concave mirror and concave lens is negative
See lessA linear object is placed at a distance equal to focal length of a concave mirror. Its image is formed
(c) behind the mirror at a distance f/2
(c) behind the mirror at a distance f/2
See lessUnder which of the following conditions mirror can form a real and inverted image larger than the actual object?
(d) When object is placed between its focus point and centre of curvature
(d) When object is placed between its focus point and centre of curvature
See lessNo matter how far or close you stand from a mirror your image is always virtual and erect. The mirror is
(d) either a convex or a plane mirror
(d) either a convex or a plane mirror
See less