26. A student who is standing 0.5 meters from a plane mirror moves at a velocity of 0.75 meters per second for 3 seconds away from the mirror. How much further is the student from her image than when she first started moving?

Select one:

a.4 meters

b.2 meters

c.5 meters

d.3 meters

27. Which of the following would be an example of using a convex mirror effectively? Select one:

a.Otoscopic mirror for concentrating light

b.Satellite dishes for collecting radio waves

c.Security mirror in store to increase range of view

d.Dental mirror for closer examination

28. A concave mirror with a focal length of 17.7 cm creates a real image 97 cm away on its principal axis. What is the corresponding object distance ?

a.21.65 cm

b.59.90 cm

c.7.48 cm

d.32.48 cm

e.52.39 cm

29. A mirror has an object located on its principal axis 14.2 cm from the mirror's surface. A virtual image is formed 46.7 cm behind the mirror. What is the mirror's focal length?

a.38.11 cm

b.-30.61 cm

c.5.44 cm

d.23.16 cm

e.20.40 cm

30. In an experiment with a convex mirror, Kofi observes that a virtual image forms2.7cmIn an experiment with a convex mirror, Kofi observes that a virtual image forms2.7cm behind the mirrorwhen the object is placed14.2cmin front of it.behind the mirrorwhen the object is placed14.2cmin front of it.

What is the magnification,m?

32. A man with a near point of 58.5 cm is using a magnifying glass of focal length 13.9 cm sees an image at 94.4 cm from the vertical axis of the lens. Determine the angular magnification of the magnifying glass.

33. The distance an object is from a diverging lens is changed by a factor of 21.6, by what factor does the angular size of the object change?

a.7.2000

b.-0.0046

c.-21.6000

d.0.0463

e.0.0231

f.7.2000

g.466.5600

h.-43.2000

36. A concave lens with a focal length of 39.4 cm has an object at 93.9 cm away on its principal axis. What is the corresponding image distance ? a.97.14 cm

b.13.88 cm

c.-101.83 cm

d.-114.52 cm

e.-27.75 cm

f.67.88 cm

37. A concave lens of focal length 6.8 cm has an object located on its principal axis, 45.7 cm from the vertical axis of the lens. What is the height of the object (in cm) if the height of the image produced is 14.2 cm?

.

38.A concave lens of focal length 28.3 cm has an object located of height 16.7 cm on its principal axis, 46.9 cm from the vertical axis of the lens. What is the height of the image produced (in cm)?