Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the…

Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the mirror]
  Column 1   Column 2
(A) m=-2 (a) Convex mirror
(B) m=-12 (b) Concave mirror
(C) m=+2 (c) Real image
(D) m=+12 (d) Virtual image
  1. A → b and c; B → b and c; C → b and d; D → a and d
  2. A → a and c; B → a and d; C → a and b; D → c and d
  3. A → a and d; B → b and c; C → b and d; D → b and c
  4. A → c and d; B → b and d; C → b and c; D → a and d

Solution

m=-Vu=ff-u
m=-2 then "V" and "u" same given
-2=ff-u=-2f+2u=f
=3f=2u
+3f2=u
For the concave mirror, f negative, u negative use same for all.

Asked in: NEET 2016 (Phase 1)

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