/*! 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 132 A strip of copper and another of... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 19: Problem 132

A strip of copper and another of germanium are cooled from room temperature to \(80 \mathrm{~K}\). The resistance of (A) each of these decreases. (B) copper strip increases and that of germanium decreases. (C) copper strip decreases and that of germanium increases. (D) each of these increases.

Short Answer

Expert verified
(C) Copper strip's resistance decreases and Germanium strip's resistance increases.

Step by step solution

01

Analyzing Copper

As the temperature decreases, the resistance in copper (a metal) decreases. This is because the impurities and lattice vibrations, which are responsible for electrical resistance in metals, become less prominent as temperature decreases.
02

Analyzing Germanium

As temperature decreases, the resistance in germanium (a semiconductor) increases. This is due to reduced thermal excitations of carriers from the valence band to the conduction band.
03

Select the Correct Option

Comparing the behavior of copper and germanium as per the given options, the correct option that fits the behavior of both materials is option (C) - the resistance of copper strip decreases and that of germanium increases when cooled from room temperature to \(80 \mathrm{~K}\).

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

When a certain metallic surface is illuminated with monochromatic light of wavelength \(\lambda\), the stopping potential for photoelectric current is \(3 V_{0}\). When the same surface is illuminated with the light of wavelength \(2 \lambda\), the stopping potential is \(V_{0}\). The threshold wavelength for the surface for photoelectric effect is (A) \(\frac{4 \lambda}{3}\) (B) \(4 \lambda\) (C) \(6 \lambda\) (D) \(8 \lambda\)

A nucleus with \(Z=92\) emits the following in a sequence: \(\alpha, \beta^{-}, \beta^{-} \alpha, \alpha, \alpha, \alpha, \alpha, \beta^{-}, \beta^{-}, \alpha, \beta^{+}, \beta^{+}, \alpha\) Then \(z\) of the resulting nucleus is (A) 76 (B) 78 (C) 82 (D) 74

The radiation corresponding to \(3 \rightarrow 2\) transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of \(3 \times 10^{-4} \mathrm{~T}\). If the radius of the largest circular path followed by these electrons is \(10.0 \mathrm{~mm}\), the work function of the metal is close to (A) \(1.8 \mathrm{eV}\) (B) \(1.1 \mathrm{eV}\) (C) \(0.8 \mathrm{eV}\) (D) \(1.6 \mathrm{eV}\)

The 'rad' is the correct unit used to report the measurement of (A) the rate of decay of radioactive source. (B) the ability of a beam of gamma ray photons to produce ions in a target. (C) the energy delivered by radiation to a target. (D) the biological effect of radiation.

A diatomic molecule is made of two masses \(m_{1}\) and \(m_{2}\) which are separated by a distance \(r\). If we calculate its rotational energy by applying Bohr's rule of angular momentum quantization, its energy will be given by: ( \(n\) is integer) (A) \(\frac{\left(m_{1}+m_{2}\right)^{2} n^{2} h^{2}}{2 m_{1}^{2} m_{2}^{2} r^{2}}\) (B) \(\frac{n^{2} h^{2}}{2\left(m_{1}+m_{2}\right) r^{2}}\) (C) \(\frac{2 n^{2} h^{2}}{\left(m_{1}+m_{2}\right) r^{2}}\) (D) \(\frac{\left(m_{1}+m_{2}\right) n^{2} h^{2}}{2 m_{1} m_{2} r^{2}}\)
See all solutions

Recommended explanations on Physics Textbooks

Translational Dynamics

Read Explanation

Measurements

Read Explanation

Linear Momentum

Read Explanation

Electricity

Read Explanation

Radiation

Read Explanation

Medical Physics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.