4-rt^tg RDF.-cFr xem il]Be, *W;-f, ilo&rg do(ro - zal' sa q3 mrsrRICT LEVEL MrD-TERM EXAMINATI0N - 2014 Tirne:3.f5 l-lours SCaf &.o*o.,x. / PHYSICS I P.U.C. (33) Max. Marks : 70 GeneraX l. ii. iii, fnstructions: All parts are compulsory ' Answer without relevant diagram/figure/circuit where ever necessary will not carry any marks. Direct answers to the numerical probles without detailed solutions will not carry any marks. PART:.A I. Answer the following questions. 10X1=10 l. Which is the strongest force in nature? 2. What is measurement? 3. Define average speed. 4. Give an example for cross product of two vectors? 5. What is impulse of a force? 6. what does the area under force-dispracement curve represent? 7. Define radius of gyration? 8. Mention the SI unit of gravitational constant ? 9' How does modulus of elasticity very with increase of temperature of the body? 10. Define angle of contact? PARI:B Answer any five of the following questions. 11. Mention any two applications of physics to technology? 12. write the dimensional formula for (i) Force (ii) pressure? 1 3 ' Give the expression for the maximum height of a projectile and explain the terms? 14. Mention the different fypes of friction? l5' Give two difference between conservative and non conseryative forces? 16. Mention the two factors on which torque of a rotating body depends? 17. State and explain Hooke,s law? I8. Write stoke,s formula and explain the terms? PART.C Answer any five of the following questions. l9' Using the principle of homogenity check the correctness of the equation. m'v' | : JJ_ where the symbols have their usual meaning; 20. Derive V' : %, .t 2axby graphical method. 21' Derive the expression for time of flight of a projectile. 22. State the laws of friction. 23. show that the power is equar to the dot product of force and verocity. tr. m. 5X2=10 5X3=15 I I I (P.r.o) For More Question Papers Visit - www.pediawikiblog.com For More Question Papers Visit - www.pediawikiblog.com www.pediawikiblog.com
Answer without relevant diagram/figure/circuit where ever necessary will not carry any marks.Direct answers to the numerical probles without detailed solutions will not carry any marks.
PART:.AI. Answer the following questions. 10X1=10l. Which is the strongest force in nature?
2. What is measurement?
3. Define average speed.
4. Give an example for cross product of two vectors?5. What is impulse of a force?
6. what does the area under force-dispracement curve represent?7. Define radius of gyration?
8. Mention the SI unit of gravitational constant ?
9' How does modulus of elasticity very with increase of temperature of the body?10. Define angle of contact?
PARI:BAnswer any five of the following questions.11. Mention any two applications of physics to technology?12. write the dimensional formula for (i) Force (ii) pressure?
1 3 ' Give the expression for the maximum height of a projectile and explain the terms?14. Mention the different fypes of friction?l5' Give two difference between conservative and non conseryative forces?16. Mention the two factors on which torque of a rotating body depends?17. State and explain Hooke,s law?I8. Write stoke,s formula and explain the terms?
PART.CAnswer any five of the following questions.l9' Using the principle of homogenity check the correctness of the equation.
m'v'| : JJ_ where the symbols have their usual meaning;
20. Derive V' : %, .t 2axby graphical method.
21' Derive the expression for time of flight of a projectile.22. State the laws of friction.23. show that the power is equar to the dot product of force and verocity.
tr.
m.
5X2=10
5X3=15
I
II
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24. state and explain parallel axes theorem with neat diagram.25. State kepler's laws of planetary motion.26. Define the terms (i) elastic limit (ii) permanent set (iii) fracture point.
lV. Answer any two of the following questions.
-T:
5X2=102:7. Derive the expression for centripetal acceleration.
28. state and prove the law of conservation of linear momentum.29 - Obtain the expression for final velocities of two bodies in one dimensional elastic collision.
V Answer any two of the following questions. S X 2 : l030. State the principle of conservation of angular momentum for the system of particles
(rigid body)Explain with two illustration.
31. Derive the expression for gravitational potential energy in bringing a particle from infinity.32. Arrive the relation between co-efficient of linear and volume expansion.
VL Answer any three of the following questions. 5X3=1533. A player throws a ball upwards with an initial speed of 29.4ms-1
(a) What is the direction of acceleration duringthe upward motion of the ball.(b) What are the velocity and acceleration of the bali at the highest point of its motion.(c) To which height does the ball rise and how long does the batt return to the player,s hands?
(take g=9.8ms-2 and neglect air resistance)
34.
35.
36.
37.
The ceiling of a long hall is 25m high. What is the maximum horizontal distance that a ballthrown with a speed of 40ms't can go without hitting the ceiling of the hall.A monkey of mass 40 Kg climbs on a rope which can stand a maximum tension of 600N. Inwhich of the following cases will the rope break: the monkey(a) climbs up with an acceleration of 6ms-2(b) climbs down with an acceleration of 4ms-2(c) olimbs up with a uniform speed of 5ms-r(d) falls down the rope nearly freely under gravity.A solid cylinder of mass 20 Kg rotates about its axis with angular speed 100 rads-r. The radiusof the cylinder is 0.25m. what is the Kinetic energy asociatei with the rotation of the cylinder?what is the magnitude of angular momentum of t[L cylinder about its axis.A body weighs 63N on the surface of the earth. What is the gravitational force on it due to theearth at a height equal to half radius of the earth.
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