MCQEasyJEE Main 2025 · 4 April, Shift 1Wave Motion Basics

Physics Question from JEE Main 2025 · 4 April, Shift 1

Consider the sound wave travelling in ideal gases of He\mathrm{He}, CH4\mathrm{CH}_{4}, and CO2\mathrm{CO}_{2}. All the gases have the same ratio Pρ\frac{\mathrm{P}}{\rho}, where PP is the pressure and ρ\rho is the density. The ratio of the speed of sound through the gases vHe:vCH4:vCO2\mathrm{v}_{\mathrm{He}}: \mathrm{v}_{\mathrm{CH}_{4}}: \mathrm{v}_{\mathrm{CO}_{2}} is given by

  • A

    75:53:43\sqrt{\frac{7}{5}}: \sqrt{\frac{5}{3}}: \sqrt{\frac{4}{3}}

  • B

    53:43:75\sqrt{\frac{5}{3}}: \sqrt{\frac{4}{3}}: \sqrt{\frac{7}{5}}

  • C

    53:43:43\sqrt{\frac{5}{3}}: \sqrt{\frac{4}{3}}: \sqrt{\frac{4}{3}}

  • D

    43:53:75\sqrt{\frac{4}{3}}: \sqrt{\frac{5}{3}}: \sqrt{\frac{7}{5}}

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