Question

dentist wants to prepare a lens which lens formula he has to use?write the formula and explain the terms of it?

Answer 1

Answer:

Explanation:

A Concave mirror is a spherical mirror, in which the reflection of light takes place from the concave surface of the mirror. Depending on the position of the object relative to the mirror, it form a variety of images. The position of the image is located with the help of the mirror equation. It is given by:

1

f

=

1

d

o

+

1

d

i

where:

f is the focal length of the mirror

d

o

 

&

 

d

i

are the object and image distances respectively.

The magnification formula for the concave mirror is given by:

m

=

−

d

i

d

o

When an object is placed within the focal point of the concave mirror it forms a virtual, erect and magnified image of the object. This property of the concave mirror makes it useful for making the dentist mirrors

Answer 2

Answer:

A dentist needs to use a convex lens which is the magnifying lens . He can find the lens formula using the give equation

$\frac{1}{f} = \frac{1}{v} - \frac{1}{u} \\ where \: f \: is \: the \: focal \: length \: v \: is \: the \: image \: distance \: and \: u \: is \: the \: object \: distance$