Solids, liquid and thermal properties of matter.
1. The maximum load a wire can withstand without breaking, when its length is reduced to half of its length, will (i) be doubled (ii) be half (iii) be four times (iv) remain same . 2. If length of a wire is doubled and area is halved then its young modulus will be (i) same (ii) halved (iii) four times (iv) ¼ times. 3.The two ends of the wire maintained at temp. 100 and 1100c the rate of flow of heat is 4j/s . if the temp. of the ends are 200 and 2100c then the rate of flow of heat will be (i) 16.8 (ii)8.0 (iii)4.0 (iv) 44.8 j/s. 4. An ideal liquid flows through a tube having diameters 2.5 and 3.75 cm then the ratio of velocity of liquid through these cross-section is (i)9:4 (ii)3:2 (iii) (3/2)1/2.(iv) (2/3)1/2 5. If volume of a system is doubled without changing its temp then volume will be (i) doubled (ii) same (iv) four times (iv) halved. 6. Two moles of helium gas undergo a cyclic process as shown in fig. assuming the gas to be ideal calculate the following quantities in the prosses (a) the net work done (b) the net change in internal energy (c) the net change heat energy. (R=8.32j/mole)
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