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UPSEE - Physics www.getmyuni.com 2008 } 1, Two wites have lengths, diameters and specific resistances all in the ratio of 1 : 2. The resistance of the first wire is 10 ohm. Resistance of the second wire in ohm will be (a) 5 (b) 10 (c) 20 (d) infinite 2. The dimensions of coefficient of self inductance are (a) (Mi?T?A~) (b) [Mi?Ta-4 (© [MLT“A~} (d) [MLTA7] Two spheres of equal masses, one of which is a thin spherical shell and the other a solid, have the same moment of inertia about their respective diameters. The ratio of their radii will be (a) 5:7 (b) 3:5 (©) ¥3:/5 (a) V3: /7 4. The acceleration of the centre of mass of a uniform solid disc rolling down an inclined plane of angle « is (a) gsina (b) 2/3 g sin a © l/2gsine (@) 1/3¢ sin a Athin wire of mass M and length L is bent to form circular ring, The moment of inertia of this ring about its axis is 3. an 1 Tyee (a) = yr? — ML? ae © 5 © _oMe (d) a MI? Te = Ig is the acceleration due to gravity on earth's Surface, the gain of the potential energy of an object of mass m raised from the surface of the “arth to a height equal to the radius R of the ®arth ig (a) 2mgR @, 5 maR (b) gh (d) a mgR 8. Oxygen and hydrogen are at the ——— 7. A wave travelling along a string is described by the equation y =A sin (wt — kx) The maximum particle velocity is (a) Aw (b) @/k (c) da/dk (d) x/I same temperature T. The ratio of the mean kinetic energy of oxygen molecules to that of the hydrogen molecules will be (a) 16:1 (b) T:1 (c) 4:1 (d) 1:4 9. The charge carriers in a p-type semiconductor are (a) electrons only (b) holes only (c) holes in larger numbers and electrons in smaller numbers (d) holes and electrons in equal numbers 10. Aball thrown by one player reaches the other in 2 s. The maximum height attained by the ball above the point of projection will be (g =10 m/s*) (a) 2.5m (b) 5m (c) 7.5m (d) 10m 11. What causes chromatic aberration? (a) Non-paraxial rays (b) Paraxial rays (c) Variation of focal length with colour (d) Difference in radii of curvature of the bounding surfaces of the lens 12. The graph between the time period and the length of a simple pendulum is (a) straight line (b) curve (c) ellipse (d) parabola, 13. The image formed by a concave mirror (a) is always real (b) is always virtual . (c) is certainly real if the object isvirtual ; (d) is certainly virtual i An evaluation version of novaPDF was used to create this PDF file. Purchase a license to generate PDF files without this notice. 
