Two converging lenses, one with f = 4.0 cm and the other with f = 37 cm , are made into a telescope. What is the length of this telescope?
What is the magnification of this telescope?

Respuesta :

Answer:

The length and the magnification of this telescope are 41 cm and 0.108.

Explanation:

Given that,

Focal length of first lens f= 4.0 cm

Focal length of other lens f'= 37 cm

We need to calculate the length of the telescope

Using formula of length

[tex]L=f+f'[/tex]

Put the value into the formula

[tex]L=4+37=41 cm[/tex]

We need to calculate the magnification of the telescope

Using formula of the magnification

[tex]m=\dfrac{f}{f'}[/tex]

Put the value into the formula

[tex]m=\dfrac{4}{37}[/tex]

[tex]m=0.108[/tex]

Hence, The length and the magnification of this telescope are 41 cm and 0.108.