Direction: The following item consists of two statements, one labelled as ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the code given below:

Statement (I): PIN photodiodes are preferred to PN diodes.

Statement (II): PIN photodiode is a constant voltage generator at a given light level.

PIN (p-type, intrinsic, and n-type) structure is mostly used for constructing the photodiode instead of p-n (p-type and n-type) junction structure because the PIN structure provides fast response time. 

PIN photodiodes are mostly used in high-speed applications.

(Statement I is true)

In absence of right:

The entire bias voltage drop across the photodiode and VRL = 0

When Light falls

light power = P,

Photocurrent generated = pP

Where p = Responsivity

Voltage drop across RL = pPRL

\({P_{max}} = \frac{{{V_{bias}}}}{{p{R_L}}}\)

Beyond this photodiode is saturated

The maximum voltage drop across RL can be bias voltage. (Statement II is true.​)

Hence, Both Statement I and Statement II are individually true but Statement II is not the correct explanation of Statement I