Maximum Marks: 80
Time allowed: Two and half hours
Answers to this Paper must be written on the paper provided separately.
You will not be allowed to write during first 15 minutes.
This time is to be spent in reading the question paper.
The time given at the head of this Paper is the time allowed for writing the answers.
Section-A
(Attempt all questions from this Section.)
Question 1
Choose one correct answer to the questions from the given options:
(i) A copper conductor pivoted at A is placed between pole pieces of a strong magnet as shown in diagram, and the direction of current
in it is shown by arrow head The direction in which conductor moves is
(a) out of plane of paper
(b) into the plane of paper
(c) towards north pole of the magnet
(d) towards south pole of the magnet
(ii) A radioactive nucleus ejects a charged particle and changes into another radioactive nucleus as shown by nuclear equation. The charged particle given out in the process is:
(a) a proton
(b) an electron
(c) helium nucleus
(d) a positron
(iii) The equivalent resistance of the resistor connected in the form of rectangle as shown in the adjacent diagram is
(a) 1.5 Ω
(b) 3 Ω
(c) 4 Ω
(d) 2.5 Ω
(iv) In step up transformer
(a) Ns = Np
(b) Ns < Np
(c) Ns > Np
(d) nothing can be said