What Frequency of Electromagnetic Radiation Has Photons of Energy $4.7 \times 10 ^ { - 25 } \mathrm {~J}$

question 96

Multiple Choice

What frequency of electromagnetic radiation has photons of energy $4.7 \times 10 ^ { - 25 } \mathrm {~J}$ ? $( h = 6.626 \times$ 10^-34 $\mathrm { J } \cdot \mathrm { s }$ )

• A) \(710 \mathrm { MHz }\)
• B) \(4.7 \mathrm { MHz }\)
• C) \(1.4 \mathrm { GHz }\)
• D) \(710 \mathrm { kHz }\)

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To agree to take or receive something offered.

Profitability Index

A financial tool used to evaluate the desirability of an investment, calculated by dividing the present value of future cash flows by the initial investment.

Positive NPV

A scenario in which the net present value of a project's cash inflows exceeds its cash outflows, indicating profitability.

Negative NPV

A situation where the net present value (NPV) of a project or investment is less than zero, indicating that the projected cash flows are insufficient to cover the initial investment.