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Calculate the Intensity of light if the ...

Calculate the Intensity of light if the beam's power is 286 W and the area covered by light is `2 m^2`?

A

143 W`m^(-2)`

B

44 W`m^(-2)`

C

6.5 W`m^(-2)`

D

56 W`m^(-2)`

Text Solution

AI Generated Solution

The correct Answer is:
To calculate the intensity of light, we can use the formula: \[ \text{Intensity} (I) = \frac{\text{Power} (P)}{\text{Area} (A)} \] ### Step-by-Step Solution: 1. **Identify the given values:** - Power (P) = 286 W - Area (A) = 2 m² 2. **Substitute the values into the formula:** \[ I = \frac{P}{A} = \frac{286 \, \text{W}}{2 \, \text{m}^2} \] 3. **Perform the calculation:** \[ I = \frac{286}{2} = 143 \, \text{W/m}^2 \] 4. **Conclusion:** The intensity of the light beam is 143 W/m². ### Final Answer: The intensity of light is **143 W/m²**. ---
To calculate the intensity of light, we can use the formula: \[ \text{Intensity} (I) = \frac{\text{Power} (P)}{\text{Area} (A)} \] ### Step-by-Step Solution: ...
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