12. the ray that is directed toward F 1 the ray that is horizontal on the left s

Question

12.

the ray that is directed toward F1

the ray that is horizontal on the left side of the lens

the ray that passes through F2

the ray that passes through the center of the lens

13.

An object is placed 16 cm from a convex spherical mirror. The focal point of the mirror is located 6.0 cm from the mirror along the optical axis. What type of image forms, and at what distance from the mirror?

virtual image, 9.6 cm from the mirror

virtual image, 4.4 cm from the mirror

virtual image, 3.1 cm from the mirror

real image, 9.6 cm from the mirror

12.

An object, pointing upwards, is placed outside the focal point F2 of a thin diverging lens. A student is using the diagram shown above and the graphical method to predict the image of the arrow. He draws several rays from point Q to the lens. Which ray emerges on the right side of the lens to be horizontal, or parallel to the optical axis?

the ray that is directed toward F1

the ray that is horizontal on the left side of the lens

the ray that passes through F2

the ray that passes through the center of the lens

Explanation / Answer

part 12 )

the ray that passes through the center of the lens

this ray not diverted from lens

part 13 ) 1/u + 1/v = 1/f

f = -6 cm , focal point is negative for convex mirror

u = 16cm

1/v = 1/f-1/u

1/v = -1/6 - 1/16

v = -4.36 cm = -4.4 cm

vitrual image , 4.4 cm from the mirror

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