Reflection of Light grade 9

Which of the following best suits the definition of Reflection of Light.

• change in the path of light when passing from one medium to another

• return of light into the same medium after striking a surface

Name the types of reflection seen

• plain/ rough

• irregular/regular

• smooth/rugged

• regular/irregular

Define 'Normal'

• light ray striking the reflecting surface

• perpendicular drawn to the surface at the point of incidence

• light ray obtained after reflection

A light ray is incident normally on a reflecting surface.The angle of reflection is _______

The Laws of reflection are,

• The normal is imaginary

• The angle of incidence is equal to the angle of reflection

• The image is virtual

• The incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.

Tick all the characteristics true for a real image

• can be obtained on a screen

• inverted with respect to the object

• formed by a concave mirror for a distant object

• cannot be obtained on a screen

• formed by the actual intersection of the reflected rays

An image which cannot be obtained on a screen is called a __________ image

Characteristics of the image formed by a plane mirror

• virtual

• upright

• same size as the object

• laterally inverted

• same distance behind the mirror as the object in the front of it

An object is at a distance of 25 cm in front of a plane mirror.The mirror is shifted 5 cm away from the object.Find the new distance between the object and it's image.

• 30 cm

• 60 cm

• 20 cm

• 40 cm

The image formed in a plane mirror is

• erect and diminished

• erect and enlarged

• inverted and of the same size

• erect and of the same size