m=in physics and the options are ent specialist and rear view mirror and hi /ho
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Explanation:
Given,
Focal length, f=20cm
Object distance, u=6m=600cm
Image distance, v=?
from mirror formula
f
1
=
v
1
+
u
1
20
1
=
v
1
−
600
1
⇒
v
1
=
20
1
+
600
1
=
2×600
620
v
1
=
600
31
v=
31
600
=19.35cm
Hence, the position of second car as seen in the mirror of first car is 19.35cm back of the mirror
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