class 8- chapter:15 - Light- class test

Latha is observing her image in a plane mirror. The distance between the mirror and her image is 6 m. If she moves 2m towards the mirror then the distance between latha and her image will be

• 8 m

• 4 m

• 10 m

• 5 m

Angle between incident and reflected ray i.e. angle AOB is

• 30 degree

• 40 degree

• 120 degree

• 180 degree

Images that can't be captured on a screen are called

• Real image

• Virtual image

• Proper image

• Imaginary image

As the distance of the object from the mirror increases the distance of the image also increases

• True

• False

• Both

• None

The bending or redirection of energy waves as they pass from one substance to another.

• Reflection

• Refraction

• Lens

Smooth shiny objects will cause

• Rewind

• Reflection

• Refraction

• Reverse

This part of the eye carries the message from your eye to the part of your brain that controls vision. 

• cornea
• lens
• optic nerve
• retina

Tags

NGSS.MS-LS1-8

In dim light, your pupil will be 

• larger
• smaller

Tags

NGSS.MS-LS1-8

This defect is caused due to elongation of eye ball.

Convex lens is used to correct this defect.