XI-STD PHYSICS QUESTION BANK
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1 XI-STD PHYSICS QUESTION BANK VOLUME-1 1. NATURE OF THE PHYSICAL WORLD AND MEASUREMENT 1. Distinguish between fundamental units and derived units. 2. Give the SI standard for (i) length (ii) mass and (iii) time. 3. Why SI system is considered superior to other systems? 4. Name four units to measure extremely small distances. 5. What are random errors? How can we minimise these errors? 6. Show that gt 2 has the same dimensions of distance. 7. What are the limitations of dimensional analysis? 8. What are the uses of dimensional analysis? 9. What is one astronomical unit? Give its value. 10. What is light year? Give its value. 11. What are constant errors? 12. What is principle of homogeneity of dimensions? 13. What is Significant figures? 14. State Newton s law of gravitation. 15. Define ampere. 1. Write a note on the basic forces in nature. 2. Give the rules and conventions followed while writing SI units. 3. To convert a physical quantity from one system of units to another. 4. To establish a relationship between the physical quantities in an equation. 7. What are the limitations and the uses of dimensional analysis? 8. Explain the error in the measurement. 9. What are the rules to find the significant figures? 2. KINEMATICS 1. Differentiate between speed and velocity of a body. 2. What is meant by retardation? 3. What is the significance of velocity-time graph? 4. What are scalar and vector quantities? 5. How will you represent a vector quantity? 6. State parallelogram law of vectors. 7. State triangle law of vectors. 1
2 8. What are the equations of motion. 9. State Newton s laws of motion. 10. Define impulse of a force 11. What is centrifugal reaction? 12. What is meant by banking of tracks? 13. What are the two types of collision? 14. State Lami s theorem. 15. Define impulsive force 16. What is projectile? 17. What is projectile motion? 18. What is angle of projection? 19. What are the types of inertia? 20. State law of conservation of momentum. 21. State parallelogram law of forces. 22. State triangle law of forces. 23. What is centripetal or radial or normal acceleration? 24. What is conservative forces? Write an examples. 25. What is non-conservative force? Write an examples. 1. Derive the equations of motion for an uniformly accelerated body. 2. Obtain the expression for magnitude and direction of the resultant of two vectors when they are inclined at an angle θ with each other. 3. Explain the different types of inertia with examples. 4. State and prove law of conservation of linear momentum. 5. State Newton s laws of motion. 6. Obtain an expression for centripetal acceleration. 7. Obtain an expression for the critical velocity of a body revolving in a vertical circle. 8. Obtain an expression for the angle of lean when a cyclist takes a curved path. 9. Obtain the expressions for the velocities of the two bodies after collision in the case of one dimensional motion. 10. State and prove principle of work and energy. 11. Obtain an expression for the potential energy. 12. Obtain an expression for kinetic energy. 13. Establish the relation between linear velocity and angular velocity. 14. Obtain an expression for resultant of concurrent forces. 3. DYNAMICS OF ROTATIONAL MOTION 1. What is centre of mass? 2. What is centre of gravity? 3. What is axis of rotation? 4. Define rigid body. 2
3 5. What are the different types of equilibrium? 6. Define radius of gyration. 7. State parallel axes theorem. 8. State perpendicular axes theorem. 9. What is moment of the couple or torque? 10. Compare linear motion with rotational motion. 11. Explain the physical significance of moment of inertia. 12. Define moment of a force. 13. Define angular momentum of a particle. 14. Define angular momentum of a rigid body. 15. State the law of conservation of angular momentum. 16. A cat is able to land on its feet after a fall. Which principle of physics is being used? 17. What are the examples of couple? 1. Obtain an expression for position of centre of mass of two particle system. 2. Explain the motion of centre of mass of a system with an example. 3. Derive the equations of rotational motion. 4. What are the different types of equilibrium? 5. Show that the moment of inertia of a rigid body is twice the kinetic energy of rotation. 6. State and prove parallel axes theorem. 7. State and prove perpendicular axes theorem. 8. Obtain an expression for relation between torque and angular accelaration. 9. Obtain an expression for relation between torque and angular momentum GRAVITATION AND SPACE SCIENCE 1. State the universal law of gravitation. 2. What are the special features of the law of gravitation. 3. Define gravitational constant. 4. Write the gravitational constant value, unit and dimensional formula. 5. The acceleration due to gravity is minimum at equator and maximumat poles. Give the reason. 6. What are the factors affecting the g value? 7. Why a man can jump higher on the moon than on the Earth? 8. Define gravitational field intensity. 9. Define gravitational potential. 10. Define gravitational potential energy. 11. Define gravitational potential difference. 12. Differentiate between inertial mass and gravitational mass. 13. The moon has no atmosphere. Why? 14. What is escape speed? 15. What is orbital velocity? 16. What will happen to the orbiting satellite, if its velocity varies?
4 17. What are the called geo-stationary satellites? 18. Show that the orbital radius of a geo-stationary satellite is36000 km. 19. Why do the astronauts feel weightlessness inside the orbiting spacecraft? 20. What are the conditions for life on any planet. 21. State Helio-Centric theory. 22. State Geo-centric theory. 23. What is solar system? 24. State kepler s laws of planetary motion. 25. What is albedo? 26. What are asteroids? 27. What are constellations? 1. The acceleration due to gravity varies with (i) altitude and (ii) depth.prove. 2. Discuss the variation of g with latitude due to the rotation of theearth. 3. Obtain an expression for the gravitational potential at a point. 4. Obtain an expressionfor gravitational potential energy for a mass in the gravitational field of the Earth. 5. What is escape speed? Obtain an expression for it. 6. What is orbital velocity? Obtain an expression for it. 7. State and prove the law of areas based on conservation of angular momentum. 8. Deduce the law of periods from the law of gravitation. 9. Write a note on Milky Way galaxy. 10. Explain the orgin of the universe. 5. MECHANICS OF SOLIDS AND FLUIDS 1. Define elasticity. 2. Define elastic body. 3. Define plastic body. 4. Define stress. 5. Define strain. 6. Define elastic limit. 7. Define elastic limit. 8. Define restoring force. 9. State Hooke s law. 10. What are the three moduli of elasticity. 11. Which is more elastic, rubber or steel? Support your answer. 12. State Pascal s law. 13. What is Reynold s number? 14. What is viscosity of a liquid? 15. What is streamline flow? 16. What is co-efficient of viscosity of a liquid? 4
5 17. What is critical velocity of a liquid? 18. Why aeroplanes and cars have streamline shape? 19. What is terminal velocity? 20. State Stoke s law. 21. Define cohesive force. Give examples. 22. Define adhesive force. Give examples. 23. Define molecular range. 24. Define sphere of influence. 25. Define surface tension. 26. Give four examples of practical application of surface tension. 27. What is angle of condact? 28. How do insects run on the surface of water? 29. Why hot water is preferred to cold water for washing clothes? 30. State Bernoulli s theorem. 31. Why the blood pressure in humans is greater at the feet than at thebrain? 32. Why two holes are made to empty an oil tin? 33. A person standing near a speeding train has a danger of falling towards the train.why? 34. Why a small bubble rises slowly through a liquid whereas the bigger bubble rises rapidly? 1. State and verify Hooke s law. 2. Explain the three moduli of elasticity. 3. Describe Searle s Experiment. 4. State and prove Pascal s law without considering the effect of gravity. 5. Taking gravity into account, explain Pascal s law. 6. Explain the principle, construction and working of hydraulic brakes. 7. Describe an experiment to determine viscosity of a liquid. 8. Explain Stoke s law. 9. Derive an expression for terminal velocity of a small sphere falling through a viscous liquid. 10. Describe an experiment to determine co-efficient of viscosity of water by poseuille s flow method. 11. Explain surface tension on the basis of molecular theory. 12. Establish the relation between surface tension and surface energy. 13. Derive an expression for the total energy per unit mass of a flowing liquid. 14. State and prove Bernoulli s theorem. BEST WISHES & PRESENTED BY A.JAGADEESHKUMAR M.SC,B.Ed. P.G TEACHER IN PHYSICS SRI MUTHAIAH MATRIC HR SEC SCHOOL, VAITHEESWARANKOIL 5 "Anyone who has never made a mistake has never tried anything new." ALBERT EINSTEIN
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