Central Board of Secondary Education
Class – XII (Year 2010)
Subject – Physics
(i) All questions are compulsory.
(ii) Marks for each question are indicated against it.
(iii) Use of Calculators is not permitted.
- Which part of electromagnetic spectrum has largest penetrating power ?
- What is the ration of radii of the orbits corresponding to first excited
state and ground state in a hydrogen atom ?
- State the conditions for the phenomenon of total internal reflection to