Correct answer
B. Photodiode
Explanation
Photodiode is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?
Which experiment shows that wavelength of light is smaller than that of sound___________________?
The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?
Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?
Which of the following is used to control rods in nuclear fission?
If the length of the second pendulum becomes four times, then its time period will become________________?