Physics 11th Past Paper - Time 3 Hours PDF

SUBJECT: PHYSICS TIME: 3 HOURS CLASS: 11th MAXIMUM MARKS: 70 S.No General Instructions Marks There are totalof four sectio...

SUBJECT: PHYSICS TIME: 3 HOURS CLASS: 11th MAXIMUM MARKS: 70 S.No General Instructions Marks There are totalof four sections in the question paper. All questions are compulsory 1 Section-A contains 10 Very Very Short Type Questions of 1 1x10 = 10 marks Mark each Section-B contains 9 Very Short Answer Type Question of 2 2x9 = 18 marks Marks each to answered in 20 to 30 words 3x9 = 27 marks Section-Ccontains 9 Short Answer Type Questions of 3 Marks each to be answered in 50 to 70 words. Section-D contains 3 Long Answer Type Questions of 5 Marks 5x3 = 15 marks each to be answered in 100 to 150 words. Use log table, if necessary. Use of scientific calculator is not allowed SECTION A Q1. i) The position time graph for a body in uniform motion is a) b) c) d) constant is ii) The dimensional formula for Gravitational a) MLT? b) M'L'T' c) M'L'T! d) M'L'T? area in equal circular motion about the origin sweeps out equal ii) The position vector of a particle in a time. Its a) velocity remains constant b) speedremains constant c) acceleration remains constant constant d) tangential acceleration remains a system equals the change in iv) The work done by the external force on a) total energy. b) kinetic energy. c) potential energy. d) none of these. system lies v) The centre of mass of earth - moon a) close to earth b) close to moon moon c) exactly at the centre of line joining earth & d) on the moon  vi) Value of g is maximum at a) equator b) poles c) centre of earth d) All of above vii) In the relation E 6T, '6' is called: a) Kirchhoff's constant b) Stefan's constant c) Wien's constant d) Boltznmann's constant viii) For a heat engine to have 100% efficiency, the temperature of a) sink should be 0°k b) sink should be 0°c c) source should be 100°c d) source should be 0C ix) If the volume of agas is increased by 4 times, a) temperature must be doubled. pressure must be increased four times. b) at constant temperature, the be increased four times. c) at constant pressure, temperature must d) None of the above. x) The potential energy of a simple pendulum is a maximum at mean position b) maximum at extreme position c maximum at all the points d) is always zero SECTION B accurate? Q2. Which of the following reading is the most (a) 7000 m (b) 70x 10'm (c) 7x 10 m convert one Newton into dyne. Q3. With the help of dimensional analysis, kiinetic energy of the Q4. A force of 3000 dyne acts on a mass of 300g for 10 seconds. Calculate the body after 10 seconds. rotation rotation of electron around the nucleus and the O5. Angular momentum is conserved in the of planets around the Sun. Why? Earth has total energy E. What is its O6. An artificial satellite moving in acircular orbit around the potential energy? Q7. State the second law of thermodynamics. of mass 5x 1017 kg in the Brownian 08. Find the root mean square velocity of smoke particles each motion in air at N.T.P. speed of the transverse 09. A steel wire of diameter 2 mm is kept under the tension of 2 kN. Find the wave in the wire. (Density of steel is 7.9 x 10 kg m) Q10. Derive the relationship for time period of simple pendulum SECTIONC car moving along a straight path with the speed of 126 Km/h is brought to rest within a Q11. A does it take distance of 200 m. Find the retardation of the car (assumed uniform) and how long for the car to stop? road of radius 100 m, if vehicle can safely Q12.Calculate the angle of banking of asmooth curved travel along it with a speed of 108 km/hr. Q13. State Newton's three laws of motion. volume 30 m the ground floor of a building can pump up water to fill a tank of Q14. A pump on pump is 30%, above the ground and the efficiency of in 15 minutes. Ifthe tank is 40 m pump? how much electric power is consumed by the angular momentum? Q15. What is law of conservation of laws of planetary motion. Q16. State and explain Kepler's three Bernoulli's Theorem. Q17. Discuss three limitations of second law of thermodynamics? Q18. What is the importance of kinetic theory of gases. Q19. Write the postulates of SECTION D height, time of flight Projectile motion? Derive the expression for maximum Q20. What is projectile fired at an angle with horizontal. and horizontal range of a OR find time (t) and total path in the last second of its fall from the rest, If a body travels half of its height (h) of its fall. experimentally Young's modulus of elasticity? What are its units? How is it Q21. Define measured? OR What are its applications? Explain Wein's displacement Law. Simple average kinetic energy of a particle executing Q22. Derive the expression for Harmonic Motion. OR motion. the characteristics of wave What is wave motion? Describe