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Chapter 4: Q9DQ (page 1072)

The magnetic-field amplitude of the electromagnetic wave from the laser described in Example 32.1 (Section 32.3) is about 100 times greater than the earth’s magnetic field. If you illuminate a compass with the light from this laser, would you expect the compass to deflect? Why or why not?

Short Answer

Expert verified

No deflection as the frequency and intensity of light is very low.

Step by step solution

01

Frequency of light.

The frequency of field of light is1015Hz

02

Conclusion.

Since the mass of the compass needle is high, it would require a higher current to deflect the needle.

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