An electric bulb illuminates a plane surface. The intensity of illumination on the surface at a point 2 m away from the bulb is 5 xx 10^(-4) phot ("lumen"//cm^(2)). The line joining the bulb to the point makes an angle of 60^(@)with the normal to the surface. The intensity of the bulb in candela is

An electric bulb illuminates a plane surface. The intensity of illumin

1.	An electric bulb illuminates a plane surface. The intensity of illumination on the surface at a point 2 m away from the bulb is 5 xx 10^(-4) phot ("lumen"//cm^(2)). The line joining the bulb to the point makes an angle of 60^(@)with the normal to the surface. The intensity of the bulb in candela is
Answer» `40 SQRT(3)` 40 20 `40 xx 10^(-4)` Answer :B

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An electric bulb illuminates a plane surface. The intensity of illumination on the surface at a point 2 m away from the bulb is 5 xx 10^(-4) phot ("lumen"//cm^(2)). The line joining the bulb to the point makes an angle of 60^(@)with the normal to the surface. The intensity of the bulb in candela is

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