Question

Co-relation
Focal length ogled
Focal Length of
a convex Meinor : Positive:
Length of concave mirror:​

Answer 1

Answer:

Any distances measured on that side are positive. Distances measured on the other side are negative. f, the focal length, is positive for a concave mirror, and negative for a convex mirror. When the image distance is positive, the image is on the same side of the mirror as the object, and it is real and inverted

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Answer 2

Answer:

uniform rod of length 60 cm and mass 6kg is acted upon by two forces as shown in the diagram

The force exerted by 45 cm part of the rod on 15 cm part of the rod is

1) 9 N

2) 18 N

3) 27 N

4)30