A plane mirror ____ all light that falls on it.

-Answer: Reflects

When light bounces off a surface the surface is?

-Answer: Reflector

A ray of light falling on a mirror is:

-Answer: Incident light

An image that can be obtained on screen is _____ image.

-Answer: Real

An image that cannot be obtained on screen is called _____ image.

-Answer: Virtual

When light is reflected, angles of incidence and reflection are ____.

-Answer: Same

Image formed by plane mirror is ____.

-Answer: Virtual

Mirror used in dressing table is ____.

-Answer: Plane mirror

Irregular reflection is also called ____ reflection.

-Answer: Non uniform

An instrument used in submarines to look above the water is:

-Answer: Periscope

Change of sides of object and its image in plane mirror is called ___.

-Answer: Lateral inversion

Ray of light which bounces off surface of mirror is called incident ray.

-Answer: False

Ray of light which bounces off surface of mirror is called as:

-Answer: reflected ray

Image formed in plane mirror is laterally inverted.

-Answer: True

Periscope is used by barbers to show the back of head.

-Answer: False

Regular reflection is produced when light falls on walls.

-Answer: False

Periscope does not work in foggy weather.

-Answer: True

Angle of incidence is twice the angle of reflection.

-Answer: False

Periscope has ____ mirrors.

-Answer: 2

Mirror ___ the path of light.

-Answer: changes

Reflection of light in mirror takes place at:

  -Answer: silver surface

Red paint on mirror is to:

-Answer: protect the silver coating

Sometimes in a mirror instead of silver, ___ coating is used.

-Answer: aluminium

Perpendicular drawn to surface at point of incidence is:

-Answer: normal

Angle between incident ray and normal is:

-Answer: incident angle

Angle between incident ray and the mirror is:

-Answer: 90-incident angle

Angle between incident ray and the mirror is:

-Answer: none of these

Angle between reflected ray and the mirror is:

-Answer:  90-reflected angle

For normal incidence, the angle of reflection is

-Answer: 0

If angle of incidence is 45 degrees then the angle of reflection is

-Answer: 45 degrees

Angle of incidence is always equal to angle of

-Answer: reflection

Regular reflection is also called as:

-Answer: specular reflection

In a real image rays of light

-Answer: really intersect

In a virtual image, rays of light after reflection:

-Answer: appear to diverge

Image formed on a cinema screen is:

-Answer: real image

For candle kept at distance of 5 cm in front of mirror, distance between candle and its image is:

-Answer: 10 cm

If angle between incident ray and a plane mirror is 30 deg., the total angle between incident ray and reflected ray will be?

-Answer: 120 deg.

A ray of light is incident at an angle of 90 deg. with a mirror surface. The angle of reflection for this ray of light will be?

-Answer: 0 deg.

An object is placed at a distance of 0.25 m in front of a plane mirror. The distance between the object and image will be?

-Answer: 0.5 m

Object is placed 10 cm in front of mirror. Then mirror is moved 2 cm towards object. Now distance between object and image is?

-Answer: 16m

Distance between object and its image is 6m. If object is moved 2m towards mirror, distance between object and image will be?

-Answer: 2m

Distance between image and mirror is 6m. If object is now moved 2m towards mirror, distance between object and image will be?

-Answer: 8m

Interchange of left and right sides in the image formed in a plane mirror is called

-Answer: lateral inversion

An alphabet which appears as it is after lateral inversion is:

-Answer: M

Which is not a characteristic of image formed by plane mirror:

-Answer: it is real

In a kaleidoscope

-Answer: 3 plane mirrors are inclined at 60 deg to each other

In a periscope:

-Answer: 2 parallel mirrors are kept at 45 deg to normal

White light can break up into range of colors called:

-Answer: spectrum

Regular reflection will occur at which of these surfaces?

-Answer: plane mirror

When light reflects off a smooth surface, it is called:

-Answer: Regular reflection

A _____ is a line drawn perpendicular to the surface of the mirror.

-Answer: normal

A normal is a line drawn ________ to the surface of mirror.

-Answer: perpendicular

If a ray of light is incident normally on a plane mirror, the angle of incidence is:

-Answer: 0 degree

When a plane mirror is rotated through an angle of 5 deg. the reflected ray moves through an angle of?

-Answer: 10 deg.

The focal length of a plane mirror is:

-Answer: infinity

You cannot see an image in a rough surface because of:

-Answer: scattering

Reflected light passes through a real image but not a virtual image

-Answer: true

A real image can be seen a virtual image cannot.

-Answer: false

A virtual image can be formed on a screen a real image cannot.

-Answer: false

A virtual and real image both can be formed on a screen.

-Answer: false

Image formed in a periscope is:

-Answer: virtual and upright

The image formed by a plane mirror is :

-Answer: virtual behind the mirror and same size

The angle of incidence for a ray of light having  zero angle of reflection is?

-Answer: 0 deg.

White light is composed of ____ colours.

-Answer: 7

White light can break up into range of colours called:

-Answer: spectrum

Who proved white light consists of seven colors?

-Answer: Newton

Secondary colors are formed from primary colors.

-Answer: True

Primary colors are formed from secondary colors.

-Answer: False

Primary colors are:

-Answer: RBG

Which of these is not a primary color?

-Answer: Yellow

Which is false?

-Answer: Y+C+M=White

Additive primary colors are:

-Answer: RBG

Subtractive colors are:

-Answer: YCM

For subtractive color mixing ____ are used.

-Answer: filters

If projector is fitted with both red and green filters;

-Answer: no light is transmitted

Cyan, magenta and yellow mixed together forms ____ color.

-Answer: black

When additive primary colors are combined;

-Answer: white is formed