1.

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 cellsB. Lead-acid batteriesC. Alkaline cellsD. Button cells

Answer» Correct Answer - D
Button cells are used in a pen camera.
Hence the correct option is (d)


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