A concave mirror forms an inverted image of an object placed at a distance of 12 cm from it. If the image is twice as large as object, where is it formed?
Answers
A concave mirror forms an inverted image of an object placed at a distance of 12 cm from it. The size of the image is double that of the object. Where is the image formed?
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ANSWER
Image is inverted so magnification ratio should be negative.
Since the object size is double so magnification ratio m=−2
now the object distance from mirror u=−12
So m=−
u
v
−2=−
−12
v
v=−24cm
image is formed at 24 cm from mirror in same direction of object.
Now be know
f
1
=
v
1
+
u
1
f
1
=
−24
1
+
−12
1
f=−8cm
Answer:
Explanation:
A concave mirror forms an inverted image of an object placed at a distance of 12 cm from it. The size of the image is double that of the object. Where is the image formed?
Share
Study later
ANSWER
Image is inverted so magnification ratio should be negative.
Since the object size is double so magnification ratio m=−2
now the object distance from mirror u=−12
So m=−
u
v
−2=−
−12
v
v=−24cm
image is formed at 24 cm from mirror in same direction of object.
Now be know
f
1
=
v
1
+
u
1
f
1
=
−24
1
+
−12
1
f=−8cm