Physics II March Exam
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سؤال 1 of 29
1. سؤال
The mass of body equal the numerical value of density when its ………..equal one.
(a) volume
(b) mass
(c) densityصحيحغير صحيح -
سؤال 2 of 29
2. سؤال
Two cylinders are made of the same metal. Both cylinders have the same cross-sectional area but one is longer than the other. Which quantity is the same for both cylinders?
(a) Density
(b) Mass
(c) Resistance
(d) Volume
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سؤال 3 of 29
3. سؤال
The ratio of the density of the electrolytic solution inside a car battery after discharging the battery to its density when the battery was charged is …………
(a) greater than 1
(b) equal to 1
(c) less than 1
(d) indeterminable
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سؤال 4 of 29
4. سؤال
The graph that represents the relation between the masses of solid iron pieces and their densities at constant temperature is ……
(a)
(b)
(c)
(d)
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سؤال 5 of 29
5. سؤال
Two balls are made of metals, the first has radius r and density p and the second has radius 2 r and density 2 p , so the ratio between their masses
(a) ½
(b) ¼
(c) 1/8
(d) 1/16
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سؤال 6 of 29
6. سؤال
If the pressure which affects the ground due to the standing of a girl on her both feet equals 2.5 x 105 N/m². so the pressure on the ground due to the standing of the same girl on one foot equals ……….. .
(a) 7.5 X 104 N/m²
(b) 2.5 X 105 N/m²
(c) 5 X 105 N/m²
(d) 106 N/m²
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سؤال 7 of 29
7. سؤال
The ratio between the normal systolic and diastolic pressures is ………………….. .
(a) 1
(b) 1/2
(c) 2/3
(d) 3/2
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سؤال 8 of 29
8. سؤال
In the opposite figure, if one of the cubes is put above the other, the pressure due to the cubes on the surface under them will ……………… .
(a) increase to the double
(b) decreuse to the half
(c) remain constant
(d) be indeterminable
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سؤال 9 of 29
9. سؤال
Two vessels S and T are filled to the same level with the same liquid as shown in the opposite figure. If the area of the base of S is less than that of T, which statement is correct ? ………. .
(a) The force on the base of S is greater than the force on the base of T
(b) The force on the base of S is the same as the force on the base of T
(c) The pressure on the base of S is greater than the pressure on the base of T
(d) The pressure on the base of S is the same as the pressure on the base of T
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سؤال 10 of 29
10. سؤال
Pressure at a point inside a homogeneous static liquid has all the following properties except that ………..
(a) it acts in all directions
(b) it doesn’t depend on the shape of the container
(c) it always works perpendicularly on the inner surface of its container
(d) it depends on the area which surrounds this point
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سؤال 11 of 29
11. سؤال
The opposite graph shows the relation between the pressure (P) at a point inside a liquid in a closed container and the vertical distance (h) between this point and the surface of the liquid for three liquids A, B, C, so ……… .
(a) ρc <ρB <ρA
(b) ρc>ρB >ρA
(c) ρc<ρA<ρB
(d) ρA = ρB = ρc
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سؤال 12 of 29
12. سؤال
Two immiscible liquids are put above each other in a container. The graph which may possibly represent the change of pressure at a point with respect to its depth in the liquids is …………………….
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سؤال 13 of 29
13. سؤال
The opposite figure shows a number of connected vessels that contain a liquid of density ρ. If the pressure of the liquid at point y is p, the pressure of the liquid at point x equals ……………… .
(a) 2/3 ρ
(b) 1/3 ρ
(c) 3/5 ρ
(d) 2/5 ρ
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سؤال 14 of 29
14. سؤال
The opposite figure represents a U-shaped tube of uniform cross-section filled with two immiscible liquids of densities P, and p. If the liquid interface lies 2 cm above the base, the relation between p2 and p1 is …………. .
(a) ρ2 = ρ1
(b) ρ2 = 1/2 ρ1
(c) ρ2 = 1.2ρ1
(d) none of the above
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سؤال 15 of 29
15. سؤال
The opposite figure shows two liquids x, y which are at an equilibrium state in a U-shaped tube, so the ratio between the densities of the two liquids are ( ρx/ρy ) is …..
(a) 1/2
(b) 5/2
(c) 2/5
(d) 2
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سؤال 16 of 29
16. سؤال
The equilibrium state of two nonmixing liquids in an open U-shaped tube is shown in the figure. At which level must the pressure be the same in both sides of this tube?
(a) h1
(b) h₂
(c) h3
(d) The pressure at h1 must equal the pressure at h2
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سؤال 17 of 29
17. سؤال
The opposite figure shows a mercury barometer, which of the following heights expresses the value of the atmospheric pressure?
(a) A
(b) B
(c) C
(d) D
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سؤال 18 of 29
18. سؤال
In the opposite figure, ………………. causes decrease in the mercury height inside the mercury barometer.
(a) increasing the amount of mercury
(b) increasing the cross-sectional area of the tube
(c) using a taller tube
(d) transferring the barometer to the top of a high mountain
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سؤال 19 of 29
19. سؤال
When using mercury barometer to measure the atmospheric pressure at the base of a mountain then at the peak, the ratio between the length of Torricellian vacuums at the base to that at the peak will be ………. .
(a) greater than 1
(b) less than 1
(c) equal to 1
(d) indeterminable
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سؤال 20 of 29
20. سؤال
The opposite figure shows a mercury barometer whose tube is connected to a gas container. If the pressure difference between the enclosed gas and the atmosphere is 40 cm Hg, the height (h) of mercury in the tube equals ………. (where : P = 76 cm Hg)
(a) 36 cm
(b) 40 cm
(c) 116 cm
(d) 156 cm
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سؤال 21 of 29
21. سؤال
The atmospheric pressure reaches 76 cm Hg at sea level. If the atmospheric pressure decreases approximately 10 mm Hg as we rise up 120 m above sea level, the height of a hill which the reading of mercury barometer at its top was 70 cm Hg is ………
(a) 520 m
(b) 680 m
(c) 720 m
(d) 800 m
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سؤال 22 of 29
22. سؤال
In the following figures which of the gases X, Y, Z has the highest pressure?
(a) X
(b) Y
(c) Z
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سؤال 23 of 29
23. سؤال
In the opposite figure, if the atmospheric pressure equals 0.75 m Hg. the pressure of the enclosed gas in the container is …….. .
(a) 70 torr
(b) 80 torr
(c) 800 torr
(d) 700 torr
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سؤال 24 of 29
24. سؤال
In the opposite figure, if the pressure of the gas in container (x) is 76 cm Hg, the pressure of the gas in container (y) is ……………….. .
(a) 66 cm Hg
(b) 76 cm Hg
(c) 96 cm Hg
(d) 86 cm Hg
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سؤال 25 of 29
25. سؤال
The opposite figure shows a glass vessel containing air and connected to a U-shaped tube which contains a liquid of density p. When the enclosed air in the vessel heated, the level of the liquid in the open arm of the tube rises by a value h, so the increase of the pressure of air after heating equals ……………… .
(a) hρ
(b) hρg
(c) 1/2 hρg
(d) 2hρg
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سؤال 26 of 29
26. سؤال
The opposite figure shows two manometers connected to a gas container, if the two manometers have different radii and contain different liquids, which of the following is the reason for the difference in height of the liquids in the two manometers? ………. .
(a) Radius of manometer tube (1) is less than radius of manometer tube (2)
(b) Liquid density in manometer (1) is greater than liquid density in manometer (2)
(c) Liquid density in manometer (1) is less than liquid density in manometer (2)
(d) Valve (1) higher than valve (2)
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سؤال 27 of 29
27. سؤال
Within a tornado the air pressure is about 80 Kilo Pascal ( Kpa) the normal value of atmospheric pressure 100 Kpa . Suppose that such a tornado suddenly envelopes a house is normal with respect to the abnormally low pressure outside it .the net force acting on area (12 m x 3 m ) from the wall of this house ?
(a) 3600000
(b) 2880000
(c) 720000
(d) 0
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سؤال 28 of 29
28. سؤال
An engineer has designed a dam wall for a reservoir. as shown in the opposite figure. Which factor determines the pressure at X?
(a) The surface area the reservoir
(b) The length of the reservoir
(c) The thickness of the dam wall
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سؤال 29 of 29
29. سؤال
The opposite figure shows a vessel containing a liquid which is exposed to atmospheric pressure. If the total pressure which affects point x is 1.5 atm, so the ratio of the total pressure at points y and z
a. b. c. d.(a)2/3
(b)2/5
(c)4/5
(d)3/2
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