PHYSICS59. Out of the following the correct relation is:(A) Joule= coulomb x volt(B) Joule= coulomb / volt(C) C) Joule= volt + coulomb (D) D)Joule= volt/coulomb60. A hypothetical experiment conduct to determine Youngs modulus , Y=Ypungs modulus, T= time , = torque and l=length, then the value of x is (A) 0 (B) 1 (C) 2 (D) 361. The speed () of ripples on the surface of water depends on surface tension (), density (), and wavelength ().The square of speed () is proportional to(A)(B)(C)(D)62. In the relation V=, where the symbols have their usual meanings the dimension of V area. A) [M0 L3 T0] (B) [M0 L3 T-1]b. (C) [M0 L-3 T] (D) [M L3 T0] 63. According to the Bernoullis theorem + + gh =K. The dimension of K area. A) [M0 L3 T0] (B) [M0 L T0]b. (C) [M0 L-0 T-2] (D) [M L2 T-2] 64. The dimension of coefficient of viscosity area. A) [M L-1 T-1] (B) [M L T-2]b. [M L0 T-2] (D) [M L T-1] 65. In a new system of units, 1 unit of time is equal to 100 s, 1 unit of mass is 10 kg and 1 unit of length is 50 m. In this new system of units, 1 unit of force is equal to a. 40 N (B) 20 N (C) (D) None of the above66. The sides of a rectangle are (10.5 0.2) cm and (5.20.1) cm. The perimeter with error limits, isa. A) (31.4 0.6) cm (B) (31.4 0.8) cmb. (C) (31.8 0.4) cm (D) (31.5 0.6) cm67. The initial and final temperatures of water as recorded by an observer are (40.6) and (78.3).a. (A) () (B) (48.6)b. (C) (37.7) (D) (40.2)68. A body travels uniformly a distance of (13.8) m in a time (4.0) s. The velocity with error limits ina. (A) (3.5) (B) (3.5)b. (C) (4.9) (D) (3.6)69. The percentage error in the volume of a sphere, when error in measuring its radius is 2%, isa. (A) (B) (C) 70. The error in the density of a cube when its mass is uncertain by and the length of its edge is uncertain by isa. (A) (B) (C) (D) 71. The percentage in R if V= () V and l= () A, is a. (A) (B) (C) (D) 72. A capacity of capacitance C = () is charged to a voltage V= () V. The charge Q with error limits isa. (A) () (B) () b. (C) () (D) () 73. A physical quantity x is calculated from formula x=. The percentage in error x , when percentage error is measuring a, b, c are 4, 2, 3 respectively isA) (B) (C) (D) 74. A wire has a mass ()g. radius () mm. and length is () cm. The maximum percentage error in the measurement of density is(A) 1 (B) 2 (C) 3 (D) 475. A physical quantity is determined by measuring a, b, c and separately with percentage error of 2%, 3&, 2% and 1% respectively. Minimum percentage of error is contributed by the measurement ofa. a (B) b (C) c (D) d76. The value of two resistors are R1= () k and R2= () k. The percentage error in the equivalent resistance when they are connected in parallel, isa. 10.29% (B) 10.5% (C) 10.125% (D) 10.8%77. A thin copper wire of length l meter increases in length by 2% when heated through 10. What is the percentage increase in area when a square copper sheet of length l meter is heated through 10a. 4% (B) 8% (C) 16% (D) 12%78. If the physical quantity x is represented by x=Ma Lb T-c and the maximum percentage errors in M, L and T are % % and % respectively, then the total maximum percentage error in x is(A) (a+b-c) % (B) (a+b+c) % (C) (a-b-c) % (D) (a-b-c) %79. While measuring the acceleration due to gravity by simple pendulum, a student makes a positive error of 1% in the length of the pendulum and the negative error of 3% in the value of time period. The percentage error of the measurement of g using the relation g=(l/T2) will be(A) 2% (B) 4% (C) 7% (D) 10%80. The relative density of material of a body is found by weighing it first in air and then in water. If the weight in air is () N and weight in water is () N, then the relative density along with the maximum percentage error is

(C).0 (D) 1.25