P0IITU11 - Properties of Matter qns

P0IITU11 - Properties of Matter qns - Page 1 Q1. Q2. Q3....

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Page 1 QUEST TUTORIALS Head Office : E-16/289, Sector-8, Rohini, New Delhi, Ph. 65395439 Q1. Two cylindrical steel columns of same length, and mass, but one is solid while the other is hollow. The decrease in then lengths when subjected to the same load (a) will be more in the hollow column (b) will be more in the solid column (c) will be the same (d) cannot be stated definitely Q2. A nylon rope 2 cm in diameter has a breaking strength of 1500 kg. A similar rope with 1 cm diameter has a breaking strength of (a) 750 kg (b) 375 kg (c) 300 kg (d) 500 kg Q3. A cable is shortened to half its original length. The maximum load it can support without exceeding its elastic limit will (a) remain the same (b) 1/2 the original value (c) twice the original value (d) cannot be stated definitely Q4. Which one of the following solid have covalent bonds (a) sodium chloride (b) ice (c) silicon (d) iron Q5. Which one of the following type of bondings is directional (a) covalent (b) metallic (c) van der wall (d) hydrogen Q6. The ratio of lateral strain to longitudinal strain is known as (a) Hook’s law (b) modulus of rigidity (c) Poisson’s ratio (d) shear modulus Q7. The theoretical value of Poisson’s ratio lies between (a) - 1 and + 1/2 (b) - 1 and 0 (c) - 1/2 and + 1/2 (d) - 1/2 and 1 Q8. Four wires are made of same material. Which one will have the largest extension when same tension is applied (a) length = 50 cm, diameter = 0.5 mm (b) length = 100 cm, diameter = 1 mm (c) length = 200 cm, diameter = 2 mm (d) length = 300 cm, diameter = 3 mm Q9. The graph shown in obtained by taking observation of time period of a spring balance by placing different masses in the pan. The intercept on the Y axis indicates M T 2 (a) the system obeys Hook’s law (b) the system does not obey Hook’s law (c) the mass of the pan has been neglected (d) amplitude of oscillations were too large Q10. A ball made of rubber is taken 100 m deep in water. If bulk modulus is 1 × 10 9 N/m 2 , its volume will change by (a) 1% (b) 0.1% (c) 10% (d) 2% Q11. Two ropes made of the same material. They have the same length but the ratio of their diameter is 1 : 2 when they are hung from the ceiling, their increase in length would be (a) 1 : 4 (b) 4 : 1 (c) there would be no increase in length (d) the same Q12. a metal bar has length L, area of cross - section A, young’s modulus Y. It is placed between rigid walls with distance L between the walls. When it is heated through t°C it exerts a force given by ( α = co - efficient of linear expansion) (a) Y α LT (b) Y α L 2 t (c) Y A α t (d) Y α t/A Q13. A wire of length L and radius r is fired at one end and a force F is applied to the other end produces an extension
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This note was uploaded on 10/05/2011 for the course PHY 203 taught by Professor Grimaldi during the Spring '11 term at St. Mary NE.

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P0IITU11 - Properties of Matter qns - Page 1 Q1. Q2. Q3....

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