MEDIUM
7th CBSE
IMPORTANT
Earn 100

Explain principal focus of mirrors with the help of suitable diagrams.

Important Questions on Light and Associated Phenomena

MEDIUM
7th CBSE
IMPORTANT
You know that lateral inversion of alphabets can be read in plane mirrors. Now, write the following sentences in laterally-inverted alphabets, and read them using a mirror.
I STUDY IN CLASS VII
MEDIUM
7th CBSE
IMPORTANT
You know that lateral inversion of alphabets can be read in plane mirrors. Now, write the following sentences in laterally-inverted alphabets, and read them using a mirror.
RECTILINEAR PROPAGATION OF LIGHT
MEDIUM
7th CBSE
IMPORTANT
You know that lateral inversion of alphabets can be read in plane mirrors. Now,
write the following sentences in laterally-inverted alphabets, and read them using a mirror.
SAVE LIGHT TO SAVE ENERGY
MEDIUM
7th CBSE
IMPORTANT
You know that lateral inversion of alphabets can be read in plane mirrors. Now, write the following sentences in laterally-inverted alphabets, and read them using a mirror.
VIBGYOR
MEDIUM
7th CBSE
IMPORTANT
A person with a weak eyesight uses spectacles. What type of lens is used in the spectacles if a person is not able to see the nearby objects (due to image formed behind the retina) and when the person is not able to see the far-off objects (due to image formed ahead of retina)?