Multiwall Carbon Nanotubes (MWCN)can Be Synthesized by Heating an SiC

question 62

Multiple Choice

Multiwall Carbon Nanotubes (MWCN) can be synthesized by heating an SiC wafer by a high power laser such as a CO₂ laser.If the diameter of a laser beam of 3-kW power and 10-µm wavelength is 3 mm,what force does the laser beam exert on the SiC wafer?

• A)9.8 * 10^-4 N
• B)3.12 * 10^-5 N
• C)1.00 * 10^-5 N.
• D)7.50 * 10^-6 N

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