The objective lens of a refracting telescope has a focal length of 60 cm and the eyepiece a focal length of 8.0 cm. what is the angular magnification of the telescope?

The solution would be like this for this specific problem:

Given:

Focal length of the objective lens (fo) = 60 cm

Focal length of the eyepiece (fe) = 8.0 cm

Find:

angular magnification of the telescope = ?

So, the formula for angular magnification is:

a = f0 / fe

Where fo = objective lens, and fe = eye lens

So, we divide the total length of the objective lens by the total length of the eyepiece:

a = fo / fe

a = 60 cm / 8.0 cm

a = 7.5 cm

Therefore, the angular magnification of the telescope is 7.5 cm.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop