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How does light travel through lenses?

Lenses serve to refract light at each boundary. As a ray of light enters a lens, it is refracted; and as the same ray of light exits the lens, it is refracted again. The net effect of the refraction of light at these two boundaries is that the light ray has changed directions.

How does light travel through a convex lens?

A convex lens causes parallel light rays to meet at a focal point. A concave lens causes parallel light rays to spread out. The focal point is the point at which parallel light rays meet after being reflected or refracted.

What is a convex and concave lens?

Lenses that are thicker at their centers than at their edges are convex, while those that are thicker around their edges are concave. A light beam passing through a convex lens is focused by the lens on a point on the other side of the lens. This point is called the focal point.

What is the nature of image formed by concave mirror if the magnification is 3?

What is the nature of the image formed by a concave mirror if the magnification is 3. Since the value of magnification has a positive value the image formed will be virtual and erect. Here the value of the magnification is +3, therefore, the image that will be formed will be virtual and erect.

What is the nature of the image formed by a concave mirror if the magnification is 1?

Solution : If the magnifiction has a plus sign (+), then the image is virtual and erect. In this case, the magnification has a plus sign (it us +3), therefore , the nature of this image is virtual and erect..

What are the uses of concave mirror?

Uses Of Concave Mirror

  • Shaving mirrors.
  • Head mirrors.
  • Ophthalmoscope.
  • Astronomical telescopes.
  • Headlights.
  • Solar furnaces.

Why are torches used in concave mirrors?

A concave mirror is used in torch lights , because the light ray from the source placed on the focus of a concave mirror are reflected in such a way that the reflected ray are strong, straight,and parallel.