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Physics — Second Secondary

Physics — Second Secondary

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Physics — Second Secondary 2026/2027

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Quiz

Chapter 5: Properties of Hydrostatics — Picture questions (exam style)

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1.
A water manometer is connected to a gas tank; atmospheric pressure 74 cmHg; level difference 30 cm (open limb higher). Which option is correct? (ρHg = 13600, g = 9.8)
A water manometer is connected to a gas tank; atmospheric pressure 74 cmHg; level difference 30 cm (open limb higher). Which option is correct? (ρHg = 13600, g = 9.8)
gas pressure = 71.79 cmHg, gas pressure ≈ 9.863e+04 Pa
gas pressure = 76.21 cmHg, gas pressure ≈ 9.863e+04 Pa
gas pressure = 482 cmHg, gas pressure ≈ 3.998e+04 Pa
gas pressure = 76.21 cmHg, gas pressure ≈ 1.016e+05 Pa
2.
A water manometer is connected to a gas tank; atmospheric pressure 75 cmHg; level difference 10 cm (open limb lower). Which option is correct? (ρHg = 13600, g = 9.8)
A water manometer is connected to a gas tank; atmospheric pressure 75 cmHg; level difference 10 cm (open limb lower). Which option is correct? (ρHg = 13600, g = 9.8)
gas pressure = -61 cmHg, gas pressure ≈ 9.898e+04 Pa
gas pressure = -10 cmHg, gas pressure ≈ 9.996e+04 Pa
gas pressure = 74.26 cmHg, gas pressure ≈ 9.898e+04 Pa
gas pressure = 74.26 cmHg, gas pressure ≈ 9.996e+04 Pa
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