Monochromatic light of wavelength 3000overset -circ-A- is incident on a surface area 4 cm-2- If intensity of light is 150 mW-m-2- then rate which photons strike the target is9times 10-13-s3times 10-10-s7times 10-15-s6times 10-19-s

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Toppr Admin · Accepted Answer

Nt-lA-x3BB-hc-150-xD7-10-x2212-3-xD7-4-xD7-10-x2212-3-xD7-3-xD7-10-x2212-76-6-xD7-10-x2212-34-xD7-3-xD7-108-9-xD7-1013-s-

Monochromatic light of wavelength $3000 \circ A$ is incident on a surface area $4 c m^{2}$ . If intensity of light is $150 m W / m^{2}$ , then rate at which photons strike the target is
$9 \times 10^{13} / s$
$3 \times 10^{10} / s$
$7 \times 10^{15} / s$
$6 \times 10^{19} / s$

$\frac{n}{t} = \frac{l A λ}{h c}$
$= \frac{150 \times 10^{- 3} \times 4 \times 10^{- 3} \times 3 \times 10^{- 7}}{6.6 \times 10^{- 34} \times 3 \times 10^{8}}$
$= 9 \times 10^{13} / s$ .

Monochromatic light of wavelength 3000∘A is incident on a surface area 4 cm2. If intensity of light is 150 mW/m2, then rate at which photons strike the target is9×1013/s3×1010/s7×1015/s6×1019/s

nt=lAλhc=150×10−3×4×10−3×3×10−76.6×10−34×3×108=9×1013/s.

Monochromatic light of wavelength $3000 \circ A$ is incident on a surface area $4 c m^{2}$ . If intensity of light is $150 m W / m^{2}$ , then rate at which photons strike the target is
$9 \times 10^{13} / s$
$3 \times 10^{10} / s$
$7 \times 10^{15} / s$
$6 \times 10^{19} / s$

$\frac{n}{t} = \frac{l A λ}{h c}$
$= \frac{150 \times 10^{- 3} \times 4 \times 10^{- 3} \times 3 \times 10^{- 7}}{6.6 \times 10^{- 34} \times 3 \times 10^{8}}$
$= 9 \times 10^{13} / s$ .