Namitha is jounalist. She used her pen camera to capture the photographs of a crime that took place on the way to her office. Wh

Namitha is jounalist. She used her pen camera to capture the photographs of a crime that took place on the way to her office. Which of the following is the source of the electrical energy which must be used in the said camera ?
A. Nickel-cadmium cells
B. Lead-acid batteries
C. Alkaline cells
D. Button cells

Namitha is jounalist. She used her pen camera to capture the photographs of a crime that took place on the way to her office. Which of the following i

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