8-Light

SI Unit of Light

• Candela

• Dyne

• Newton

• None of these

Angle between incident ray to normal is called

The perpendicular drawn to the reflecting surface is called

• normal

• incident ray

• reflected ray

• none of these

Which of the following results in diffused reflection?

• Plane mirror

• Shiny surface

• Silver

• Wood

If you hold a pen in your right hand and stand in front of the mirror, the pen will be in the left hand in the image. This phenomenon is called
(a) lateral inversion
(b) diffraction
(c) reflection
(d) inversion

• lateral inversion

• diffraction

• reflection

• inversion

If two plane mirrors are inclined at an angle of 40°, number of images formed will be

• 4

• 5

• 6

• 8

Band of seven colours is called
(a) VIBGYOR
(b) dispersion
(c) spectrum
(d) reflection

• VIBGYOR

• dispersion

• spectrum
  

• 
  reflection

Visually impaired people can read and write using _____

Match the followingThe size of image formed by the plane mirror is __________ as size of object.

Kaleidoscope works on the principle of ________

• Multiple reflections

• Magnetic induction

• Multiple echo

• none