BPSC – Combined Competitive Examination · প্রশ্ন 16
A photoelectric cell is a device which:
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (A) converts light energy into electrical energy
ব্যাখ্যা
Photoelectric cells convert incident light into electric current (used in sensors, automatic doors, solar cells).
- (A) সঠিক
Correct: it uses the photoelectric effect to produce current from light.
- (B) ভুল
Wrong: that is a bulb/LED.
- (C) ভুল
Wrong: it does not store energy.
- (D) ভুল
Wrong: option A is correct.