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- 1. Multiple Choice
When blood pressure is measured, the cuff of the sphygmomanometer is wrapped round the upper arm and must be held at the level of the heart. Why?
Blood pressure depends on the level of the blood.
Blood pressure is normal when the cuff and heart are at the same level.
Blood is able to flow easily to the wrist.
- 2. Multiple Choice
The pressure of sea water at the bottom of the sea is 1.2 × 108 N m–2.
Determine the depth of the sea.
[Density of sea water = 1020 kg m–3]
1.18×104 m
1.18×105 m
1.18×106 m
1.18×109 m
- 3. Multiple Choice
A submarine has a surface area of 300 m2.
The density of sea water is 1050 kg m–3.
At what depth under the sea, will the additionalpressure on the submarine be 5 × 105 Pa?
[Take g = 10 N kg–1]
47.62 m
67.62 m
87.62 m
57.62 m
- 4. Multiple Choice
The figure below shows a reservoir on a hill. The reservoir supplies water to a water tank on a tall building.
Calculate the water pressure at X.
(Density of water = 1000 kg m–3)
1.4×109 Nm–2
1.4×102 Nm–2
1.4×105 Nm–2
1.4×108 Nm–2
- 5. Multiple Choice
A coin sinks to a depth of 5 m in a liquid of density 800 kg m–3. At what depth, in a different liquid of density 600 kg m–3, will the coin be subjected to the same pressure?
6.67 m
8.67 m
9.67 m
5.67 m
- 6. Multiple Choice
The figure shows a pond with two fish P and Q.
What is the correct relation of the water pressures on fish P and fish Q?
Water pressure on fish Q > Water pressure on fish P.
Water pressure on fish Q < Water pressure on fish P.
Water pressure on fish Q = Water pressure on fish P.
- 7. Multiple ChoiceThe pressure of water exerted on the fishes is PX, PY and PZ respectively.
Which comparison is correct about the pressure exerted on the fishes?PZ > PY > PXPZ = PX < PYPZ = PX > PYPZ < PX < PY - 8. Multiple ChoiceCalculate the pressure exerted by the water on the fish.
[Density of water = 1 000 kg m−3]5 × 104 Pa5 × 107 Pa5 × 106 Pa5 × 10-1 Pa - 9. Multiple ChoiceWhich of the following graphs shows the correct relationship between water pressure, p and depth, h of the water?ABCD
- 10. Multiple ChoiceTwo identical containers containing liquid M and liquid N with 28 cm height and 20 cm height respectively. Both containers produce the same water spurt.
If the density of liquid M is 2.0 g cm−3, find the density of liquid N.0.70 g cm−31.40 g cm−31.43 g cm−32.80 g cm−3 - 11. Multiple ChoiceArrange the density of spheres, W, X, Y and Z, in descending order.X, Y, W, ZY, X, W, ZX, W, Y, ZW, Z, X, Y
- 12. Multiple ChoiceGiven that the pressure of sea water at the bottom of an ocean is 7.65 × 107 N m−2, calculate the depth of the ocean.
[Density of sea water = 1.02 × 103 kg m−3]7.5 × 108 m7.5 × 104 m7.5 × 103 m7.5 × 102 m - Answer choicesTagsAnswer choicesTags