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Questions

Physics

Multiple Choice Question with Only One Choice Correct
For a particle executing simple harmoinc motion, the displacement x is given by x = A cos

t. Identify the graph which represents the variation of potential energy (PE) as a function of time t and displacement x.

(a)	I, III	(b)	II, IV
(c)	II, III	(d)	I, IV

Chemistry

Multiple-Choice Question
Which of the following elements has zero electron affinity?

(a)

Fluorine

(b)

Nitrogen

(c)

Neon

(d)

Oxygen

Mathematics

The value of the expression

is equal to

(a)

(b)

(c)

(d)

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