Test: Reflection of Light - UPSC MCQ

Distance between raj and image=100cm
Distance between image mirror =x
Distance between image and mirror= Distance between mirror and raj
x+x=100
2x=100
x=50cm

A virtual image occurs when light rays do not actually meet at the image. Instead, you " See" the image because your eye projects light rays backward. In flat, or plane mirrors, the image isa virtual image, and is the same distance behind the mirror as the object is in front of the mirror.

The image formed by a plane mirror is always virtual,upright, and of the same shape and size as the object it is reflecting. A virtual image is a copy of an object formed at the location from which the light rays appear to come.

The focal length of a plane mirror is infinity as the image can be formed at an infinite distance inside the mirror.

The image formed by a plane mirror is always virtual (meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting. A virtual image is a copy of an object formed at the location from which the light rays appear to come.

Step 1: Given data

An observer moves towards a stationary plane mirror at a speed of 4m/s

Step 2: Find the speed of the image with respect to the mirror

The mirror and the object move toward each other As a result, there is a relative velocity between the object and the mirror. Similarly, the image will move toward the mirror in a manner that is comparable to that of the object. The relative velocity of the image in relation to the mirror allows us to calculate its relative velocity in relation to the ground.

Lateral inversion is a phenomenon in which left appears to be right and vice versa. It is due to direction that light follows when it strikes a reflecting surface, generally a mirror.

Lateral version of I is I

In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without being scattered.

A virtual image is defined as the opposite of a real image, therefore an image that cannot be obtained on a screen is reffered to as a virtual image. The rays of light that form a virtual image never converge therefore a virtual image can never be projected onto a screen.

A real image occurs where rays converge, whereas a virtual image occurs where rays only appear to converge. Real images can be produced by concave mirrors and converging lenses, only if the object is placed further away from the mirror/lens than the focal point and this real image is inverted.

For a plane mirror: If the incident ray falls along the normal, the angle of incidence is 0 degrees, NOT 90 degrees. The angle is measured with the normal to the mirror and not with the plane of the mirror. Hence the angle of reflection is equal to 0 degrees.

Angle of incidence is the angle which an incident line or ray makes with a perpendicular to the surface at the point of incidence.

Angle of reflection is the angle between ghe reflected ray and the normal angle of incidence is the angle between the incident ray and the normal always angle of incidence =angle of reflection

Letter L shows lateral inversion

x = 75 cm, as for a plane mirror the distance between the object and the mirror is equal to the distance between the mirror and image.

Light follows rectilinear motion. It travels in straight line. A light wave can be considered to travel from one point to another along a straight line joining them.

For reflection through a plane mirror, Image distance (v) = Object distance (u) = 6 m

The left and right of a mirror image appear reversed ( lateral inversion) because of how we perceive the mirror image. The phenomenon where your left appears as the right and vice versa in a mirror is reffered to as lateral inversion.

The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection.