180 -(nons) 6. An object is located 7.5 cm in front of the mirror and its image

Question

180 -(nons) 6. An object is located 7.5 cm in front of the mirror and its image however appears located 34.0 cm behind the mirror. (a) Is the mirror concave or convex? (b) What is the focal length of the mirror? (e) what is the magnification of the mirror? [You must show clearly your work for (b) and (01 7. A mirror and an object are arranged as in the figure. (a) Is the mirror concave or convex? (b) Where is the focal point F? (Mark it in the figure) (c) Use the 3 reasoning strategies (one of them was already provided), to draw the image in the figure (d) Is the image real or virtual? (e) What is the magnification? (Circle the correct one) Iml 1 and m is positive, 8. 110 pts] How can the image appear like this?

Explanation / Answer

6)

(a) concave

(b) Using mirror eqn:

1/f = 1/u + 1/v = (1/7.5) + (1/34)

=> f = 6.14 cm

(c) Magnification

M = -(v/u) = -(34/7.5) = -4.53

[-ive means the image is inverted]

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