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  • The sides of a rectangular block are 2 cm, 3 cm and 4cm. The ratio of maximum to minimum resistance between its parallel faces is:Option: 1 4</p

The sides of a rectangular block are 2 cm, 3 cm and 4cm. The ratio of maximum to minimum resistance between its parallel faces is:

Option: 1

4


Option: 2

3


Option: 3

2


Option: 4

1


Answers (1)

best_answer

\begin{aligned} & \therefore R_{\max }=\frac{\rho \times 4}{2 \times 3} \times 100 \\ &R_{\min } =\frac{\rho \times 200}{3 \times 4} \end{aligned}
For maximum resistance, \ell_1=4 \mathrm{~cm}

 For minimum resistance, \ell_2=2 \mathrm{~cm}

\therefore \quad \frac{R_1}{R_2}=\frac{16}{4}=4

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Gaurav

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