Board Paper of Class 12-Science 2015 Physics (SET 2) - Solutions
General Instructions:
(i) There are 26 questions in all. All questions are compulsory.
(ii) This question paper has five sections : Section A, Section B, Section C, Section D and Section E.
(iii) Section A contains five questions of one mark each, Section B contains five questions of two marks each, Section C contains twelve questions of three marks each, Section D contains one value based question of four marks and Section E contains three questions of five marks each.
(iv) There is no overall choice. However, an internal choice has been provided in one question of two marks, one question of three marks and all the three questions of five marks weightage. You have to attempt only one of the choices in such questions.
- Question 1
What is the electric flux through a cube of side 1 cm which encloses an electric dipole? VIEW SOLUTION
- Question 2
A concave lens of refractive index 1.5 is immersed in a medium of refractive index 1.65. What is the nature of the lens? VIEW SOLUTION
- Question 3
How are side bands produced? VIEW SOLUTION
- Question 4
Graph showing the variation of current versus voltage for a material Ga As is shown in the figure. Identify the region of
(i) negative resistance
(ii) where Ohm's law is obeyed.
VIEW SOLUTION
- Question 5
Define capacitive reactance. Write its S.I units. VIEW SOLUTION