TS EAMCET · Physics · Dual Nature of Matter
A photodiode sensor is used to measure the output of a lamp kept away The sensor has an opening of in diameter. How many photons enter the sensor if the wavelength of the light is and the exposure time is . (Assume that all the energy of the lamp is given off as light and )
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Energy of photon is E=hcλ=6.6×10-34×3×108660×10-9=3×10-9 The number of photons emitted is given by, n=Eenergy of lampPhoton energy×Area of sensorExposure area of lamp…
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