11th class (Fsc) Physics unit 6 MCQs
25. The pressure will be low where the speed of fluid is:
a. zero
b. High
c. Constant
d. Low
26. Bunsen burner works on the principle of:
a. Bernoulli’s effect
b. Venturi effect
c. None of these
d. Torricelli’s effect
27. The ratio of the velocities of water in a pipe lying horizontally at two ends is 1:4 the ratio of diameters of pipe at these two ends is:
a. 1:4
b. 1:2
c. 4:1
d. 2:1
28. The device used for measurement of liquid flows is:
a. Hydrometer
b. Manometer
c. Venturimeter
d. Barometer
29. The lower reading of a blood pressure is called:
a. Normal pressure
b. Systolic pressure
c. Non-normal pressure
d. Diastolic pressure
30. The mathematical relation V2 = √2g(h1-h2) is known as:
a. Torricelli’s theorem
b. Equation of continuity
c. Ventri relation
d. Bernoulli’s equation
31. Blood pressure is measured by:
a. Galvanometer
b. Hydrometer
c. Sphygmomanometer
d. Barometer
32. The density of blood is nearly equal to:
a. Milk
b. air
c. Honey
d. Water
33. Vanturimeter is used to measure:
a. Volume of fluid
b. Speed of fluid
c. Mass of fluid
d. Pressure of fluid
34. On the average for normal healthy person diastolic pressure is:
a. 100torr
b. 120torr
c. 75-80torr
d. 110torr
35. Blood has density equal to that of:
a. Honey
b. Mercury
c. Water
d. Sodium
36. A 2 meter high tank is full of water. If a hole appears at its middle, then the speed of efflux is:
a. 6.2 ms-1
b. 4.4 ms-1
c. 20 ms-1
d. 10 ms-1
37. Opted unit to measure blood pressure is:
a. mm of Hg
b. N/m2
c. N.m2
d. Pascal
38. Venturi relation is given as:
a. P1-P2 = 1/2 Sv12
b. P= 1/2 P2V2
c. P= √2g(h1-h2)
d. P1-P2 = 1/2 P22
39. Where the blood pressure is large:
a. In the foot
b. In the neck
c. In the leg
d. In the hand
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