Recent questions tagged ch3

The cell constant of a conductivity cell is defined as

asked Jul 18, 2014 by sreemathi.v

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The unit of resistivity is

asked Jul 18, 2014 by sreemathi.v

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According to Ohm's law,(where the various symbols have their usual meanings)

asked Jul 18, 2014 by sreemathi.v

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Telegraphic poles along a straight railway track are spaced at regular intervals of $90\;m$. A passenger in the train observes the successive pole pass at time intervals of 3 and 2 seconds respectively , find the acceleration of the train assuming it to be uniform .

asked Jul 18, 2014 by meena.p

1 answer

The unit of molar conductivity is

asked Jul 18, 2014 by sreemathi.v

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Which of the following is correct?

asked Jul 18, 2014 by sreemathi.v

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A train travels first one third of the distance on a straight track with velocity$10km h^{-1}$ next one third with velocity $20 kmh^{-1}$ and the last portion with velocity $60 kmh^{-1}$. What is the average velocity of the train for the whole journey ?

asked Jul 18, 2014 by meena.p

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If one molecule of an electrolyte dissociates to produce $v_+$ number of cations $A^{z+}$ and $v_-$ number of anions $B^{z-}$,then the relation between molar conductivity $(\Lambda_m)$ and equivalent conductivity $(\Lambda_{eq})$ is

asked Jul 18, 2014 by sreemathi.v

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If a ball is thrown vertically upwards with speed u, the distance covered during the last t second of its ascent is

asked Jul 18, 2014 by meena.p

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Which of the following is not correct?

asked Jul 18, 2014 by sreemathi.v

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A particle is dropped vertically from rest from a certain height. Time taken by it to fall through successive distance of one metre each will be :

asked Jul 18, 2014 by meena.p

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A stone is thrown vertically up from the top of a tower with some initial velocity and it arrives on the ground after $t_1$ seconds. Now if the same the stone is thrown vertically down from the top of the same tower with the same initial velocity, it arrives on ground after $t_2$ seconds. In how much time will the stone take to reach the ground if it is dropped from the same tower?

asked Jul 17, 2014 by meena.p

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A particle is projected vertically upwards . It attains a height h after 2 seconds and again after 10 seconds . The speed of the particle at the height h is numerically equal to

asked Jul 17, 2014 by meena.p

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A body is projected vertically upwards. If $ t_1$ and $t_2$ be the times at which it is at height h above the point of projection while ascending and descending respectively. then h is,

asked Jul 17, 2014 by meena.p

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If the speed of a truck is reduced to one third of its original value, the minimum distance required to stop will be

asked Jul 17, 2014 by meena.p

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A particle starts from the position of rest under a constant acceleration. If travels a distance x in the first 10 seconds and distance y in the next 20 seconds . Then

asked Jul 10, 2014 by meena.p

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The greatest acceleration or deceleration that a train may have is $\alpha$ .The minimum time in which the train can get from one station to the next at a distance S is

asked Jul 10, 2014 by meena.p

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The front point of a train moving with constant acceleration crosses a signal post with velocity u and the end point of the train crosses the signal post with velocity v. With what velocity the middle point of the train crosses the signal post ?

asked Jul 10, 2014 by meena.p

1 answer