5. An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. find
the position and nature of the image.
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Answer:
An object is placed at a distance of 10cm from a convex mirror of focal length 15cm. ... Since the image is formed behind the convex mirror, therefore, the nature of image is virtual and erect.
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Physics
Ray Optics and Optical Instruments
Image Formation by Spherical Mirror
An object is placed at a di...
PHYSICS
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.
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ANSWER
It is to be remembered that a convex mirror always forms the virtual, erect and diminished image.
Given: Object distance, u=−10cm Focal length, f=15cm
To find: Image distance, v
From mirror formula :
v
1
+
u
1
=
f
1
v
1
−
10
1
=
15
1
v
1
=
15
1
+
10
1
=
150
25
v=6cm
Hence image will be formed 6 cm beyond the mirror, i.e virtual magnification
m=
u
−v
=
−10
−6
=0.6
Hence it will be erect and diminished.