1st Year Physics Guess Paper

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• Most Important Short Questions of all chapters of 1st year Physics. 
• Most Important Long Questions of all chapters of 1st year Physics.
• Most Important Numerical of all chapters of 1st year Physics. 
• Most Important Short Questions 1. What are the main frontiers of the fundamental sciences? 2. Differentiate between radian and steradian. 3. Differentiate between random and systematic error. 4. What is the difference between precision and accuracy? 5. Define dimensional analysis. Write its uses.
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• Exercise Short Questions 6. Name several repetitive phenomena occurring in nature which could serve as responsible time standards. 7. Give the draw backs to use the period of pendulum as a time standard? 8. Why do we find it useful to have two units for amount of substance, the kilogram and mole? 9. The period of a simple pendulum is measured by a stop watch. What types of error are possible? 10. Does dimensional analysis give any information about a constant of proportionality that may appear in an algebraic expression? 11. Write the dimension of (a) Pressure (b) density
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• Most Important Short Questions 1. What is head to tail rule? 2. Define null vector and equal vector. 3. Write three characteristics of scalar product and dot product. 4. Define equilibrium. Discuss its types.
• Exercise Short Questions 5. Define the terms (i) Unit vector (ii) Position Vector and (iii) Component of a Vector. 6. The vector sum of three vectors gives zero resultant. What can be the possible orientation of the vectors? 7. If one of the rectangular components of a vector is not zero. Can its magnitude be zero? Explain. 8. Can a vector have components greater than the vector’s magnitude? 9. Can a vector have components greater than the vector’s magnitude? 10. If A+B = 0, What can you say about the components of two vectors? 11. Under what circumstances would a vector have components that are equal in magnitude? 12. Is it possible to add a scalar quantity into a vector quantity? Explain 13. Can you add zero to a null vector? 14. Two vectors have unequal magnitude. Can their sum be equal to zero? Explain. 15. Suppose the sides of closed polygon represent vector arranged head to tail rule. What is the sum of these vectors? 16. If all the components of the vectors A and A 1 2 were reversed, how would this alter A A 1 × 2  17. Name the three different conditions that could make A A 1 × 2 = O  18. Can a body rotate about its centre of gravity under the action of its weight?
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• Long Questions 1. Vector addition by rectangular components 2. Dot or scalar product 3. Cross or vector product 4. Torque acting on a rigid body
• Most Important Short Questions 1. Show that the area between the velocity time graph is equal to the distance covered by the object. 2. When a bullet is fired from a riffle. Why does the riffle move backward? 3. Define ballistic missile and ballistic trajectory.
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• Exercise Short Questions 4. What is the difference between uniform and variable velocity? From the explanation of variable velocity, define acceleration. Give SI units of velocity and acceleration. 5. An object is thrown vertically upward. Discuss the sign of acceleration due to gravity, relative to velocity, while the object is in air? 6. Can the velocity of an object reverse direction when acceleration is constant? If so, given an example? 7. Explain the circumstances in which the velocity and acceleration of car are; (i) Parallel (ii) Anti-Parallel (iii) Perpendicular to one another
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• 8. Motion with constant velocity is a special case of motion with constant acceleration. Is this statement true? Discuss. 9. Find the change in momentum for an object subjected to a given force for a given time and state law of motion in terms of momentum? 10. Define impulse and show that how it is related to linear momentum? 11. Explain the difference between elastic and inelastic collision. 12. Explain what is meant by projectile motion? Derive the expression for (a) The time of flight (b) The range of projectile Show that the range of projectile is maximum when projectile is thrown at an angle of 45o with horizontal. 13. At what point or points in its path does a projectile have its minimum speed, its maximum speed? 
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