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EMF and Terminal Voltage

In the follow...

Question

In the following diagram, Calculate the approximate current drawn from the cell.

A

0.3 A

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B

0.2 A

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C

0.4 A

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D

0.1 A

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E

0.5 A

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Solution

The correct option is A
0.3 A

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Q. Match List I with List II and select the correct answer using the code given below the lists:

	List I		List II
(a)	Zero order	(p)	$k = \frac{1}{2 t} [\frac{1}{(a_{0} - x)^{2}} - \frac{1}{a_{0}^{2}}]$
(b)	1st order	(q)	$k = \frac{1}{t} [\frac{1}{(a_{0} - x)} - \frac{1}{a_{0}}]$
(c)	Second order	(r)	$k = \frac{x}{t}$
(d)	Third order	(s)	$k = \frac{1}{t} l n (\frac{a_{0}}{(a_{0} - x)})$

(1 + x + x^{2})^{n} = a_{0} + a_{1} x + a_{2} x^{2} + . . . . . . + a_{2 n} x^{2 n}

a_{0}^{2} - a_{1}^{2} + a_{2}^{2} - \dots + a_{2 n}^{2} =

If Avogadro's number is A $_{0}$ , the number of sulphur atoms present in 200 mL of 1N H $_{2}$ SO $_{4}$ is

Q. In a photo-electric cell, the wavelength of incident light is changed from 4000

A^{0}

A^{0}

. The change in stopping potential will be

(1 + x + x^{2})^{20} = a_{0} + a_{1} x + a_{2} x^{2} + \dots + a_{40} x^{40},

then the value of

a_{0}^{2} - a_{1}^{2} + a_{2}^{2} - \dots - a_{19}^{2}

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