a shopper standing 3.00 m from a convex security mirror sees his image with a magnification of 0.250. (a) where is his image? (b) what is the focal length of the mirror? (c) what is its radius of curvature?

Respuesta :

His image is formed at a 0.75m distance from the mirror while the focal length and the radius of curvature are 1.00m and 2.00m respectively.

  • To calculate the image distance you can use the formula for the mirror's magnification which is,

                                                    [tex]\begin{aligned}\\\\M&=\frac{V}{U}\end{aligned}[/tex]

  • Here V and U represent the image distance and the object distance measured from the mirror's centre.
  • Therefore,

                                                  [tex]\begin{aligned}\\\\0.25&=\frac{V}{3.00\,m}\\\\V&=0.75\,m\end{aligned}[/tex]

  • For the second part, you can use the lens formula as you know V and U now, as follows.

                                   [tex]\begin{aligned}\\\\\frac{1}{V}+\frac{1}{U}&=\frac{1}{f}\\\frac{1}{-0.75}+\frac{1}{3.00} &=\frac{1}{-f}\\f&=1.00\,m\end{aligned}[/tex]

  • For the final part, you should know that the radius of curvature is twice the focal length for these curvy optics. Therefore,

                                                      [tex]\begin{aligned}\\\\R&=2f\\&=2.00\,m\end{aligned}[/tex]

  • To know more about convex mirrors and their properties follow the link below.

        https://brainly.com/question/23864253?

His image forms at 0.75m. The focal length of the mirror is 1.00m and the radius if curvature is 2.00m.

a) To calculate the image distance,

m=v/u where m is magnification, v is image distance and u is object distance.

Therefore,

0.25=v/3.00

v=0.75m

b) To calculate the focal length using the lens formula,

1/v+1/u=1/f

Therefore,

1/-0.75 + 1/3.00 =1/f

f=1.00m

c) The radius of curvature is twice the focal length.

Therefore,

R=2f

R=2.00m

read more about reflection around curved mirrors from:

https://brainly.com/question/29568154

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