Physics

An object is placed 30mm in front of a lens. An image of the object is located 90mm behind the lens.

a) Is the lens converging or diverging? explain.

b) What is the focal length of the lens?

c) Draw a diagram with lens at x=0, locate the image.

d) Is the image real or virtual?
Is it smaller, larger, or same size as the object?
Is it inverted or upright in comparison to the object?

e)the lens is replaced by a concave mirror with focal lenght 20 mm. Draw the mirror at position x=0 so that a real image is formed. Draw at least two rays and locate the image to show this situation.

f) If the object height is 15 mm, calculate the height of the image and the magnification of the mirror.

  1. 👍 0
  2. 👎 0
  3. 👁 140
asked by Harly
  1. I don't know

    1. 👍 0
    2. 👎 0
    posted by Gore

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    An object is placed to the left of a lens, and a real image is formed to the right of the lens. The image is inverted relative to the object and is one-half the size of the object. The distance between the object and the image is

    asked by Anonymous on October 12, 2015
  2. Physics

    An object is placed in front of a converging lens in such a position that the lens (f = 13.2 cm) produces a real image located 23.5 cm from the lens. Then, with the object remaining in place, the lens is replaced with another

    asked by Elle on December 1, 2014
  3. Physics

    An object is placed to the left of a lens, and a real image is formed to the right of the lens. The image is inverted relative to the object and is one-half the size of the object. The distance between the object and the image is

    asked by Elle on December 1, 2014
  4. Physics

    An object, that is 3.25 mm high is placed 16 cm in front of a lens. The image produced by this lens appears 6.0 cm behind the object, as the figure shows. (a) What is the focal length of this lens and what type of lens is it? (b)

    asked by Chloe on July 27, 2011
  5. Physics

    An object is placed in front of a converging lens in such a position that the lens (f = 14.0 cm) creates a real image located 27.0 cm from the lens. Then, with the object remaining in place, the lens is replaced with another

    asked by DCM on March 6, 2012
  6. physics 2

    1) A mirror creates an image that has a height of 1.30 cm that is behind the mirror and 189 cm from the object.The image was created from a 2.60 cm tall object. What is the focal length of the mirror? 2) A lens placed 12.0 cm in

    asked by Anonymous on April 6, 2019
  7. Physical Science

    Need help please. the once with the ( ) is my answer but i am not sure if it right. Thanks for your help. 15. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be A.

    asked by molly on September 21, 2010
  8. Physics

    An object is 14 cm in front of a diverging lens that has a focal length of -7.9 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.9?

    asked by Neil on April 14, 2014
  9. AP Physics B

    An object is 21 cm in front of a diverging lens that has a focal length of -10 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.5?

    asked by Alexis on March 15, 2013
  10. calculus problem

    the thin lens equation in physics is 1/s+1/S=1/f where s is the object distance from the lens,S is the image distance from the lens,and f is the focal length of the lens.Suppose that a certain lens has a focal length of 6cm and

    asked by roslin on October 27, 2010

More Similar Questions