Ask Question
26 April, 11:20

When two lenses of focal length 10 centimetre and - 5 CM placed in contact then find the net power

+4
Answers (1)
  1. 26 April, 13:54
    0
    The net power is - 0.1.

    Explanation:

    Power of lenses is defined as the ability of lenses to converge or diverge the incident light. Mathematically, the power of any lens can be determined by the reciprocal of the focal length of the lens.

    Power = 1/f

    As here two lenses are given, so the power for first lens with focal length 10 cm is P1 = 1/10=0.1.

    Similalrly, for the second lens have the focal length of - 5cm, so the power of this lens will be P2 = - 1/5=-0.2.

    Then the net power = P1+P2=0.1-0.2=-0.1.

    Thus, the negative net power of the connecting lens indicate that the incident light will be diverged. So the net power is - 0.1.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “When two lenses of focal length 10 centimetre and - 5 CM placed in contact then find the net power ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers