Light - Class 8

Name a device which works on the reflection of reflected light.

• Kaleidoscope

• Periscope

Tags

NGSS.MS-PS4-2

Which option is not the law of reflection?

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

• The angle of incidence and the angle of reflection are always equal

• Angle of reflection = normal

Tags

NGSS.MS-PS4-2

Which part of the eye helps to focus the image?

• Retina

• Iris

• Ciliary Muscle

• Eye Lens

The English Braille System uses           dots.

• 2

• 5

• 7

• 6

How is hypermetropia corrected?

(a)  

Which is NOT a color seen in the Color Spectrum?

• Black

• Indigo

• Orange

• Red

How many images can be formed when two mirrors are kept parallel to each other.

• 2

• Infinite

• 4

Tags

NGSS.MS-PS4-2

What is the persistence of vision.

• 1/16 of a second

• 1/14 of a second

• 1/15 of a second

• 1/19 of a second

Tags

NGSS.MS-LS1-8

Which part of the eye protects the interior from accidents? 

• Pupil

• Cornea

• Rods

• Retina

Image formed in a plane mirror undergoes ___________ Inversion.

• Lateral Inversion

• Upright

• Erect