A device called an insolation meter is used to measure the intensity of sunlight. It has an area of 100 cm2 and registers 6.50 W. What is th

Question

A device called an insolation meter is used to measure the intensity of sunlight. It has an area of 100 cm2 and registers 6.50 W. What is the intensity in W/m2

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Lệ Thu 5 years 2021-08-14T22:43:14+00:00 1 Answers 131 views 0

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  1. Philomena
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    2021-08-14T22:44:16+00:00
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    Answer:

    650W/m²

    Explanation:

    Intensity of the sunlight is expressed as I  = Power/cross sectional area. It is measured in W/m²

    Given parameters

    Power rating = 6.50Watts

    Cross sectional area = 100cm²

    Before we calculate the intensity, we need to convert the area to m² first.

    100cm² = 10cm * 10cm

    SInce 100cm = 1m

    10cm = (10/100)m

    10cm = 0.1m

    100cm² = 0.1m * 0.1m = 0.01m²

    Area (in m²) = 0.01m²

    Required

    Intensity of the sunlight I

    I = P/A

    I = 6.5/0.01

    I = 650W/m²

    Hence, the intensity of the sunlight in W/m² is 650W/m²

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