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How many times a gas (gamma = 1.5) must expand adiabatically to cut the rms speed by a factor

The same question, asked 7 times: May 2021 S1*, 9 May 2023 S2*, 11 May 2024 S2, 26 Apr 2025 S1*, 13 Apr 2026 S1*, 15 Apr 2026 S2*, 19 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    May 2021 S1

    9
    An ideal gas (γ=1.5)(\gamma = 1.5) is expanded adiabatically. How many times has the gas to be expanded to reduce the root mean square velocity of molecules two times?

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  2. Question 2

    9 May 2023 S2

    32
    An ideal gas (γ=1.5\gamma = 1.5) is expanded adiabatically. To reduce root mean square velocity of molecules two times, the gas should be expanded

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  3. Question 3

    11 May 2024 S2

    8
    An ideal gas expands adiabatically (γ=1.5)(\gamma = 1.5). To reduce the r.m.s velocity of the molecules 3 times, the gas has to be expanded

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  4. Question 4

    26 Apr 2025 S1

    16
    An ideal gas expands adiabatically, (γ=1.5)(\gamma= 1.5). To reduce the r.m.s. velocity of the molecules 4 times, the gas has to be expanded

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  5. Question 5

    13 Apr 2026 S1

    117
    An ideal gas expands adiabatically (γ=1.5)(\gamma = 1.5). To reduce the r.m.s. velocity of the molecules 3 times the gas has to be expanded

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  6. Question 6

    15 Apr 2026 S2

    117
    An ideal gas is expanded adiabatically. How many times has the gas to be expanded to reduce the r.m.s. speed of molecules 3 times ? (γ=1.5)(\gamma = 1.5)

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  7. Question 7

    19 Apr 2026 S2

    117
    An ideal gas (γ=1.5)(\gamma = 1.5) is expanded adiabatically. To reduce the root mean square velocity of molecules two times, the gas should be expanded

    Tap an option to check your answer.