An object is held 49.1 cm away from amirror. The mirror has a focal length of -4

Question

An object is held 49.1 cm away from amirror. The mirror has a focal length of -49.9 cm.

a.) Determine the image distance.
cm

b.) Determine the magnification.


c.) If the object is 7.6 cm long,determine the image height.
cm


d.) Which of the following are true about the image? Chooseall that apply. The image is real.
The image is inverted.The image is virtual.
The image is upright.


e.) Which of the following are true about the mirror? Chooseall that apply. The mirror is convex.
The mirror is concave.
The mirror is diverging.
The mirror is converging. An object is held 49.1 cm away from amirror. The mirror has a focal length of -49.9 cm.

a.) Determine the image distance.
cm

b.) Determine the magnification.


c.) If the object is 7.6 cm long,determine the image height.
cm


d.) Which of the following are true about the image? Chooseall that apply. The image is real.
The image is inverted.The image is virtual.
The image is upright. The image is real.
The image is inverted.The image is virtual.
The image is upright. The image is real.
The image is inverted.The image is virtual.
The image is upright.


e.) Which of the following are true about the mirror? Chooseall that apply. The mirror is convex.
The mirror is concave.
The mirror is diverging.
The mirror is converging. The mirror is convex.
The mirror is concave.
The mirror is diverging.
The mirror is converging. The mirror is convex.
The mirror is concave.
The mirror is diverging.
The mirror is converging.

Explanation / Answer

Given : Object distance ( p ) = 49.1 cm Image distance ( i ) = ? Focal length ( f ) = -49.9cm a )    As we konw that     From the foacl length formula    1/f = 1/ i + 1/p 1/ i = 1/f - 1/p       i = f p / p -f         = ------ cm     b ) Magnification ( m ) = - i / p = ---       c )    Object height ( ho ) = 7.6 cm Image height ( hi ) = ? As we know that   m = hi / ho        hi = mho    Plugin the values and solve it    Plugin the values and solve it   

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