Answer True or False for all statements. A virtual image formed by a concave mir

Question

Answer True or False for all statements. A virtual image formed by a concave mirror is always enlarged. The image produced by a convex mirror is always closer to the mirror than it would be in a plane mirror for the same object distance. A convex mirror never forms a real image of a real object. A concave mirror always forms an enlarged real image of a real object. A concave mirror always forms a virtual image of a real object. When an object is placed between a concave mirror and its focal point, the image is virtual. The virtual image formed by a convex mirror is always enlarged.

Explanation / Answer

(1)

True

(2)

True

(3)

true because A convex mirror has negative f, by the mirror equation, since

1/di = 1/f- 1/ do

do is positive for real object so di always has to be negative number

(4)

False

for example let the object distane be

do = 3f/2

then

1/di = 1/f - 2/3f

so magnification is enlarged

(5)

false

(6)

True

(7)

false, because convex mirrors always form virtual images. also f is negative and do is positive, tfrom the mirro expression 1/di is more negative then eithe -1/do or 1/f. which mens thet mod di is smaller than dc . the is turn implies from M = - di/do , that the image is reduced compared to the object.

Concave mirror can produce both real and virtual image depends upon the object position. As the object distance approaches one focal length, the image distance and image size approaches infinity.

When the object distance is equal to exactly the focal length, there is no image.

Then altering the object distance to values less than one focal length produces images that are upright, virtual and located on the opposite side of the mirror.

Convex mirror always produce a virtual upright and dimnished image.

For a convex mirror, as the object distance is decreased from the mirror,

the image distance is decreased and the image size is increased.

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