a 4 cm tall object is placed a distance of 5 cm from a concave mirror having a focal length of 10cm determine the image distance and the image size
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Answer:
u=-5, f=-10, using the formula
1/v+(-1/5)=(-1/10)
1/v=(1/5)-(1/10)=1/10
v=+10
+ sign shows that image is behind the mirror and hence not real.
Image size/object size=v/u
image size/4=10/5=2
image size=4×2=8 cm
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