Physics - Sample
question paper
Written Test for Admissions,
2002-2003
(1 hour)
Total Marks:
100
Q1. In the given co-ordinate system, which of the following objects, lie in y-z plane. Discuss if these objects will be invariant under a) translation b) rotation around the three axis. Also discuss the angles of rotational symmetry if any. [6 mks]
i) Infinite line lying along y-z direction
ii) An ellipse with major axis along y-axis and minor axis along z-axis
iii) A triangle (equilateral) in y-z plane
Q2. A wave is 10 Cos(5x + 25t) and another is 20 Cos(5x + 25t + π/3) interfere. Deduce amplitude and phase of resultant wave. [5 mks]
Q3. A box contains 10 red, 7 blue and 3 white balls. Find the probability that [5 mks]
i) Two balls drawn at random with out replacement are not red
ii) Three balls drawn without replacement have at least one blue ball
Q4. What is gravity? Give arguments to support your choice. [12 mks]
a) A property of the massive bodies
b) A property of the space
c) A property of massive bodies due to the presence of space
d) A property of space due to the presence of massive bodies
Q5. There are three quantum quandaries namely:
1. Collapse of atoms
2. Ultraviolet catastrophe
3. Photoelectric effect.
Why are they called as quantum quandaries? Explain them briefly. [4x2=8 mks]
