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(Download) CBSE: Class XII Physics Question Paper - 2011-SET-2

Central Board of Secondary Education

Class – XII (Year 2011)
Subject – Physics - SET- 2

General Instructions:
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.

  1. Define the term 'wattless current'.
  2. When monochromatic light travels from one medium to another its wavelength changes but frequency remains the same. Explain.