An iron sphere having diameter {D} and mass {M} is immersed in hot water so that the temperature of the sphere increases by \delta {T}. If \alpha is the coefficient of linear expansion of the iron then the change in the surface area of the sphere is

Correct Answer is : πD2⋅α.δT(α.δT+2)

{ }^{\pi} {D}^{2} \cdot \alpha . \delta {T}(\alpha . \delta {T}-4)

\pi {D}^{2} . \alpha . \delta {T}(\alpha . \delta {T}+4)

\pi {D}^{2} \cdot \alpha . \delta {T}(\alpha . \delta {T}-2)

\pi {D}^{2} \cdot \alpha . \delta {T}(\alpha . \delta {T}+2)

AP EAPCET 05-Jul-2022 Shift 1 Paper

Section: Physics

Question : 97 of 160

Marks: +1, -0

An iron sphere having diameter D and mass M is immersed in hot water so that the temperature of the sphere increases by δT. If α is the coefficient of linear expansion of the iron then the change in the surface area of the sphere is

‌πD2⋅α.δT(α.δT−4)
πD2.α.δT(α.δT+4)
πD2⋅α.δT(α.δT−2)
πD2⋅α.δT(α.δT+2)

Validate

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