Intensity of light can be measured by

Luxmeter

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Wilmott's bubbler

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Ganong's potometer

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Farmer's potometer

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Solution

The correct option is A Luxmeter
Light is an important regulating factor in the process of photosynthesis. The lux is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square meter. In photometry, this is used as a measure of the intensity.
So, the correct answer is option A.

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Similar questions

Consider the arrangement shown in figure (17-E7). By some mechanism, the separation between the slits $S_{3}$ and $S_{4}$ can be changed . the intensity is measured at the point P which is at the common perpendicular bisector

of $S_{1} S_{2}$ and $S_{3} S_{4}$ When z = $\frac{d λ}{2 d},$ the intensity measured at P is I. Find this intensity when z is equal to
(a) $\frac{D λ}{d}$ , (b) $\frac{3 D λ}{2 d}$ and (c) $\frac{2 D λ}{d} .$