16.Coefficient of isothermal elasticity Eθ and coefficient of adiabatic elasticity E∅ are related by (λ = CP/CV) (a)Eθ = λE∅ (b) E∅ =λEθ (c) Eθ = …
(a) 1 mm of Hg (b) 13.6 mm of Hg (c) 1.013×105 N/m2 (d) 2.026×105 N/m2 Answer-c (11)
(a) 19.6×108 N/m2 (b) 19.6×10-10 N/m2 (c) 19.6×1010 N/m2 (d) 19.6×10–8 N/m2 Answer-a (9)
(a) 0.01 (b) 0.06 (c) 0.02 …
(a) Young (b) Bulk (c) Maxwell (d) None of the above Answer-c (7)
10. When a pressure of 100 atmosphere is applied on a spherical ball, then its volume reduces to 0.01%. The bulk modulus of the material of the rubber in dyne/cm2 is (a) 10×1012 …
9. The compressibility of a material is (a) Product of volume and its pressure (b) The change in pressure per unit change in volume strain (c) The fractional change in volume per unit change in pressure (d) None of the …
If the density of the water is 1× 103 Kg/m3 and g=10 m/s 2, then the volume elasticity in (N/m2) will be (a) 108 …
7. The compressibility of water is 4×10-5 per unit atmospheric pressure. The decrease in volume of 100 cubic centimeter of water under a pressure of 100 atmosphere will be (a) 0.4 cc (b) 4×10-5 cc (c) 0.025 cc …
The tube is always completely filled with water. In case I tube is horizontal and in case II it is vertical with end A upwards and in case III it is vertical with end B We have v1 = v2 …
(a) It will remain unchanged (b) It will rise (c) It will fall (d) First it will first rise and then fall Answer-c (5)
(a) 3.0 m/s (b) 1.5 m/s (c) 1.0 m/s (d) 2.25 m/s Answer-c (6)
(a) 4 times that in the other pipe (b) 1/4 times that in the other pipe (c) 2 times that in the other pipe (d) 1/2 times that in the other pipe Answer-a (4)
(a) Liquid of high viscosity and high density flowing through a pipe of small radius (b) Liquid of high viscosity and low density flowing through a pipe of small radius (c) Liquid of low viscosity and low density flowing through …
(a) Remain at the same height (b) Fall at the rate of 1 cm/hour (c) Fall at the rate of 2 cm/hour (d) Go up the rate of 1cm/hour Answer-b (5)
(a) Archimedes’ principle (b) Bernoulli’s theorem (c) Pascal’s law (d) Newton’s laws Answer-a (11)
(a) Viscosity (b) Surface tension (c) Density (d) None of these Answer-d (9)
(a) Rises (b) Falls (c) Unchanged (d) First rises and then falls Answer-b (13)
(a) Equal of that of water (b) Half the density of water (c) Double the density of water (d) The question is incomplete Answer-b (6)
(a) Both pieces must have equal weights (b) Both pieces must have equal densities (c) Both pieces must have equal volumes (d) Both are floating to the same depth Answer-c (5)
2. Two bodies are in equilibrium when suspended in water from the arms of a balance. The mass of one body is 36 g and its density is 9 g / cm3. If the mass of the other is 48 …
(a) 0.7 (b) 0.2 (c) 0.1 (d) 0.5 Answer-a (9)
(a) 4 times (b) 1/4 times (c) 3 times (d) 1/3 times Answer-d (6)
(a) 3/4 (b) 4/3 (c) 1 (d) 5/3 Answer-b (4)
(a) Young’s modulus (b) Shear modulus (c) Modulus of rigidity (d) Bulk modulus Answer-d (12)
The specific heat at constant pressure and at constant volume for an ideal gas are Cp and Cv and its adiabatic and isothermal elasticities are EΦ and Eθ respectively. The ratio of EΦ to Eθ is (a) Cv/ Cp (b) Cp …
(a) γ×density (b) γ×volume (c) γ×pressure (d) γ×specific heat Answer-c (22)
(a) Density (b) Volume (c) Pressure (d) Specific heat Answer-c (7)
(a) L=10cm ,D=1mm (b) L=100cm ,D=2mm (c) L=200cm ,D=3mm (d) L=300cm ,D=4mm Answer-b (5)
(a) + 0.50 (b) – 0.50 (c) 0.25 (d) – 0.25 Answer-b (11)
(a) –1 to 1/2 (b) -3/4 to -1/2 (c) -1/2 to 1 …
A rubber cord 10 m long is suspended vertically. How much does it stretch under its own weight (Density of rubber is 1500 kg/m3, Y = 5×108 N/m2, g = 10 m/s2) (a) 15×10–4 m (b) 7.5×10–4 m …
A substance breaks down by a stress of 106 N/m2. If the density of the material of the wire is 3×103 kg/m3, then the length of the wire of the substance which will break under its own weight when suspended …
A wire of cross section 4 mm2 is stretched by 0.1 mm by a certain weight. How far (length) will be wire of same material and length but of area 8 mm2 stretch under the action of same force (a) …
A wire of length 2 m is made from 10 cm3 of copper. A force F is applied so that its length increases by 2 mm. Another wire of length 8 m is made from the same volume of copper. …
In the Young’s experiment, If length of wire and radius both are doubled then the value of Y will become (a) 2 times (b) 4 times (c) Remains same (d) Half Answer-c (17)
(a) Zero (b) Infinity (c) 1×1010 N/m2 (d) 10×1010 N/m2 Answer-b (13)
(a) 500 N (b) 1000 N (c) 10000 N (d) 4000 N Answer-d (11)
(a) -∞ to +∞ (b) 0 to 1 (c) -∞ to 1 (d) 0 to 0.5 Answer-d (8)