Question

Differentiate
between:
a) Regular and
irregular
reflection
b) Real and
Virtual images.​

Answer 1

Answer:

a)REGULAR AND DIFFUSED REFLECTION - DEFINITION

concept

Regular reflection occurs at the surface of a plane surface like a plane mirror. Reflected rays after regular reflection are parallel.

Diffused reflection occurs at the surface of a rough surface like cardboard. Reflected rays after regular reflection are not parallel.

Note: Laws of reflection are valid in both the cases.

REGULAR AND IRREGULAR REFLECTION - DEFINITION

concept

Regular Reflection:

1. Reflection from a polished surface is called regular reflection.

2. parallel rays remain parallel after reflection.

Irregular Reflection:

1. Reflection from a rough surface is called diffuse reflection.

2. Parallel rays do not remain parallel after reflection.

b)Difference Between Real Image and Virtual Image

Real Image Virtual Image

Real images are inverted Virtual images are erect

Convex lenses form a real image Concave lenses form a virtual image

Real images are formed on the screen Virtual images appear to be on the lens or the mirror itself

Real images are formed by a concave mirror Plane, convex mirror and concave lens forms a virtual image

Real images are formed due to the actual intersection of light rays Virtual images are formed due to the imaginary intersection of light rays.

Answer 2

Explanation:

Regular Reflection and Irregular Reflection

1. It occurs when all the reflected rays from a given smooth surface are parallel for parallel incident rays. It occurs when for a given set of incident parallel rays, the reflected rays do not remain parallel to each other.

2 .Occurs from smooth surfaces like mirror, silver spoon etc. Occurs from rough surfaces like wood, table, door, book etc.

Difference Between Real Image and Virtual Image

Real Image and virtual image

Real images are inverted . Virtual images are erect.

Convex lenses form a real image. Concave lenses form a virtual image.

Real images are formed on the screen. Virtual images appear to be on the lens or the mirror itself.

Real images are formed by a concave mirror. Plane, convex mirror and concave lens forms a virtual image.

Real images are formed due to the actual intersection of light rays .Virtual images are formed due to the imaginary intersection of light rays.