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Chapter 6: Problem 13

What are the basic SI units for (a) the wavelength of light, (b) the frequency of light, (c) the speed of light?

Short Answer

Expert verified
The basic SI units for (a) the wavelength of light is meters \((m)\), (b) the frequency of light is Hertz \((Hz)\), and (c) the speed of light is meters per second \((m/s)\).

Step by step solution

01

(a) Wavelength of light

The wavelength of light refers to the distance between two consecutive points on a wave of light (for example, two successive peaks). It is a property of light that can be measured in units of length. The basic SI unit for length is the meter \( (m) \). Therefore, the basic SI unit for the wavelength of light is meters \( (m) \).
02

(b) Frequency of light

The frequency of light refers to the number of complete wave cycles that pass a given point in one second. It is a property of light that can be measured in units of cycles per second (also called Hertz). The basic SI unit for frequency is Hertz \( (Hz) \), which is equivalent to cycles per second. Therefore, the basic SI unit for the frequency of light is Hertz \( (Hz) \).
03

(c) Speed of light

The speed of light is the speed at which light travels through a vacuum. It is a constant value and refers to the product of wavelength and frequency. The speed of light is a property that can be measured in units of distance (meters) divided by time (seconds). The basic SI unit for speed is meters per second \((m/s)\). Therefore, the basic SI unit for the speed of light is meters per second \((m/s)\).

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Most popular questions from this chapter

(a) For \(n=4,\) what are the possible values of \(l ?(\mathbf{b})\) For \(l=2\) what are the possible values of \(m_{l} ?(\mathbf{c})\) If \(m_{l}\) is \(2,\) what are the possible values for \(l\) ?

Consider a transition in which the electron of a hydrogen atom is excited from \(n=1\) to \(n=\infty\) . (a) What is the end result of this transition? (b) What is the wavelength of light that must be absorbed to accomplish this process? (c) What will occur if light with a shorter wavelength that in part (b) is used to excite the hydrogen atom? (d) How are the results of parts (b) and (c) related to the plot shown in Exercise 6.88\(?\)

Using the periodic table as a guide, write the condensed electron configuration and determine the number of unpaired electrons for the ground state of (a) Br, (b) Ga, (c) Hf, (d) Sb, (e) Bi, (f) Sg.

(a) What are "valence electrons"? (b) What are "core electrons"? (c) What does each box in an orbital diagram represent? (d) What object is represented by the half arrows in an orbital diagram? What does the direction of the arrow signify?

The series of emission lines of the hydrogen atom for which \(n_{1}=3\) is called the Paschen series. (a) Determine the region of the electromagnetic spectrum in which the lines of the Paschen series are observed. (b) Calculate the wavelengths of the first three lines in the Paschen series - those for which \(n_{1}=4,5,\) and \(6 .\)
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