/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 44 A bimetallic strip is made of al... [FREE SOLUTION] | 91影视

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Chapter 10: Problem 44

A bimetallic strip is made of aluminium and steel \(\left(\alpha_{A l}>\alpha_{\text {steel }}\right)\). On heating, the strip will (A) remain straight. (B) get twisted. (C) bend with aluminium on concave side. (D) bend with steel on concave side.

Short Answer

Expert verified
The bimetallic strip made of aluminum and steel will bend when heated, with the steel forming the concave side. This is because the aluminum has a higher coefficient of linear expansion and will expand more than the steel, causing the strip to bend. Therefore, the correct option is (D) bend with steel on the concave side.

Step by step solution

01

Observe the expansion of each metal when heated

When the bimetallic strip is heated, both metals (aluminum and steel) will expand. However, due to the different coefficients of linear expansion, the aluminum will expand more than the steel.
02

Analyze the bending of the bimetallic strip

As the aluminum expands more than the steel, the bimetallic strip cannot remain straight and will bend to accommodate the difference in expansion.
03

Determine which side will be concave

Since the aluminum expands more than the steel, the strip will bend in such a way that the aluminum forms the convex side, and the steel forms the concave side. This is because the larger expansion of the aluminum will "push" the steel to form the concave side.
04

Choose the correct option

From our analysis, we can conclude that the bimetallic strip will bend with the steel forming the concave side. The correct option is (D) bend with steel on the concave side.

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Most popular questions from this chapter

An aluminium sphere of \(20 \mathrm{~cm}\) diameter is heated from \(0^{\circ} \mathrm{C}\) to \(100^{\circ} \mathrm{C}\). Its volume changes by (given that the coefficient of linear expansion for aluminium \(\left.\alpha_{A l}=23 \times 10^{-6} /{ }^{\circ} \mathrm{C}\right)\) (A) \(28.9 \mathrm{cc}\) (B) \(2.89 \mathrm{cc}\) (C) \(9.28 \mathrm{cc}\) (D) \(49.8 \mathrm{cc}\)

Cooking gas containers are loaded on to a truck moving with uniform speed. The temperature of the gas molecules inside the containers will (A) increase. (B) decrease. (C) remain same. (D) decrease for some, whereas increase for others.

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