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Course: Bridge Course Class 12th Physics > Unit 1

Lesson 1: Reflection
Science
Bridge Course Class 12th Physics
Ray optics
Reflection
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Mix questions on mirror formula and magnification

Google Classroom

Problem

A convex mirror of focal length 20 cm forms a virtual image of height 1.0 cm at a distance of 16 cm behind the mirror.
What is the height of the object, hO?
Note: Let's write the answer with the correct sign.
hO=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
cm