Recent questions tagged t7

Is $R_s$ is the equivalent resistance of n resistances in series and $R_p$ is the equivalent resistance of n resistances in parallel then $\frac{R_s}{R_p}$ is

asked Oct 10, 2017 by priyanka.c

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Read the following passage and answer the question given below A parallel circuit divides the current in various components (appliances) and each component can draw current as per its appropriate operation. Separate on/off switch can be put with each component in parallel circuit. Moreover, total resistance in parallel circuit arrangement decreases and hence a stronger current can be drawn from a voltage source. In parallel combination, the equivalent resistance is lesser than the least of all the resistance. Connecting a number of resistors in parallel is like providing an equal number of paths, for the electron flow which results in a decrease in resistance. Question : Two resistors of different resistances are to be connected to a battery so as to obtain a minimum current, then the mode of connecting the resistances is

asked Oct 10, 2017 by priyanka.c

0 answers

Read the following passage and answer the question below A parallel circuit divides the current in various components (appliances) and each component can draw current as per it appropriate operation. Separate on/off switch can be put with each component in parallel circuit. Moreover, total resistance in parallel circuit arrangement decreases and hence a stronger current can be drawn from a voltage source. In parallel combination, the equivalent resistance is lesser than than the least of all the resistance. Connecting a number of resistors in parallel is like providing an equal number of paths, for the electron flow which results in a decrease in resistance. Question : A domestic circuit is always connected in ___________ so that the current supply is not disrupted even if one of the circuit goes off

asked Oct 6, 2017 by priyanka.c

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During sunset the sun appears reddish in colour because of

asked Oct 6, 2017 by priyanka.c

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A convex mirror used for rear view an automobile has radius of curvature of 3m. If a bus is located at 6m from the mirror, then the nature of this image is

asked Oct 6, 2017 by priyanka.c

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A dentist uses this mirror

asked Oct 6, 2017 by priyanka.c

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A mirror which can give real as well as virtual image is

asked Oct 5, 2017 by priyanka.c

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Which type of lens have negative power?

asked Oct 5, 2017 by priyanka.c

1 answer

For the same angle of incidence of $45 {\circ}$ the refraction angle in three transparent media A, B and C are $25^{\circ}, 30^{\circ} $ and $35^{\circ}$ respectively. In which medium is the speed of light minimum and in which medium maximum?

asked Oct 5, 2017 by priyanka.c

1 answer

Vitreous humor is the liquid which fills the space between

asked Oct 5, 2017 by priyanka.c

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Rare gases are

asked Sep 14, 2017 by meena.p

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All of the following are trends in the periodic table, except:

asked Sep 14, 2017 by meena.p

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Which of the following is not a balanced equation?

asked Sep 14, 2017 by meena.p

1 answer

Monosaccharides (simple sugars) have

asked Sep 14, 2017 by meena.p

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Out of total amount of water available for human use is

asked Sep 14, 2017 by meena.p

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All of the following are diatomic molecules, except:

asked Sep 14, 2017 by meena.p

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A solution reacts with crushed egg-shells to give a gas that turns lime-water milky.The solution contains:

asked Sep 14, 2017 by meena.p

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Equilibrium constant can be used to

asked Sep 14, 2017 by meena.p

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An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be :

asked Sep 14, 2017 by meena.p

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Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

asked Sep 14, 2017 by meena.p

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The electrolytic decomposition of water gives $H_2$ and $O_2$ in the ratio of

asked Sep 14, 2017 by meena.p

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Which of the following hydroxides is most basic?

asked Sep 14, 2017 by meena.p

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Sodium is most likely to form a compound with which one of these elements?

asked Sep 14, 2017 by meena.p

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Which of the following is an example of a colloid?

asked Sep 14, 2017 by meena.p

1 answer