# AP Board Junior Inter Physics Model Paper

Here we are giving Junior Intermediate Model Paper useful for the students of Andhra Pradesh. The paper is for Physics (Paper 1). Duration of the exam is 3 hours and maximum marks are 60. Following is the question paper.

Intermediate Public Examinations - March 2013
Physics Paper - 1 Model Paper (Section - A)

Note: a) All questions are of very short answer type.
c) Each question carries 2 marks. 10 x 2 = 20
1. Find the value of 2.2+4.08+3.125+6.3755 with due regard to
significant figures.
2. Which physical quantities remain constant in (i) an elastic collision and (ii) an inelastic collision?
3. A boy stands at one end of a boat that is stationary relative to
the shore. He starts to walk towards the opposite end of the
boat away from the shore. Does the boat move? If it moves in
what direction does it move?
4. A pendulum clock shows correct time at the equator. Does it
gain or lose time if it is taken to the poles? why?
5. What is 'Neutron Star'? What are its limitations?
6. What are the directions of dynamic and static frictions between two bodies?
7. What is the work done in blowing a soap bubble of radius 2
cm if the surface tension of soap solution is 7 x 10-2 Nm-1?
8. If the gas in an open vessel is heated what will be the relation
between its temperature and mass of the gas in the container?
9. What is a reversible process? Is it necessary that the
process is to be quasi-static if it is to be reversible?
10. Equal masses of ice at 0oC and steam at 100oC are mixed up. Does all the ice melt? Does all the steam condense?

Section - B

Note: a) All questions are of short answer type.
c) Each question carries 4 Marks. 6 x 4 = 24
11. Find the unit vector perpendicular to A → = 2iΛ+3j Λ+kΛ and
B → = iΛ-j Λ+kΛ
12. Derive the equation S = ut+1/2at2 using graphical method
where the symbols have their usual meaning.
13. Obtain an expression for the acceleration of a body down a
rough inclined plane.
14. Show that the projection of a particle performing uniform circular motion on any diameter of reference circle is simple
harmonic.
15. What is orbital velocity? Obtain an expression for it.
16. What is strain energy? Derive an expression for the strain
energy of a stretched wire.
17. Derive the equation of continuity? when a hose pipe is held
with its open end vertically upward how does the area of cross section of the water stream flowing out of the pipe change?
18. Show that Cp-Cv = R in the case of one mole of an ideal gas.

Section - C

Note: a) All questions are of long answer type.