Advertisements
Advertisements
प्रश्न
Explain optical centre of a lens with the help of proper diagram(s).
Advertisements
उत्तर
Optical centre: "It is the point in the lens on the principal axis such that a ray of light passing through this point emerges parallel to the direction of incidence (or goes undeviated)."
APPEARS IN
संबंधित प्रश्न
What is a lens?
A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray either passes through ______.
A ray of light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from ______.
State the condition of the following:
A ray passes undeviated through the lens.
What type of lenses are used in spectacles worn by an old lady for knitting?
Make the correct choices in the following items :
The image formed by a diverging lens, shown in fig, , is
Name the subjective property of light related to its wavelength.
State the nature and position of the object on the principal axis to obtain a real and magnified image.
When does a ray of light falling on a lens pass through it undeviated?
Draw a ray diagram to show the image formed by a convex lens when the object is placed between F and 2F.
