Engineer & Medical

Exam 2010 Chemistry question bank (Chemistry)

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Q1.

$A$ charge $+Q$ is moving upwards vertically. It enters a magnetic field directed to the north. The force on the charge will be towards

(A)

North

(B)

South

(C)

East

(D)

West

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Q2.

$v_1$ is the frequency of the series limit of the Lyman series,$v_2$ is the frequency of the first line of the Lyman series,and $v_3$ is the frequency of the series limit of the Balmer series. Then:

(A)

$v_1 - v_2 = v_3$

(B)

$v_1 = v_2 - v_3$

(C)

$\frac{1}{v_2} = \frac{1}{v_1} + \frac{1}{v_3}$

(D)

$\frac{1}{v_1} = \frac{1}{v_2} + \frac{1}{v_3}$

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