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The current in a wire varies with time according to the equation I = 4 + 2t, where I is in ampere and t is in sec. The quantity of charge which has passed through a cross-section of the wire during the time t = 2 sec to t = 6 sec will be

What is the excess pressure inside a liquid jet?

A  pie chart is to be drawn for representing the following data

Item of expenditure number of families
Education 150
Food and clothing 400
house rent 40
electricity 250
miscellaneous 160

The value of the central angle for food and clothing would be

Mean of 100 observations is 45. It was later found that two observations 19 and 31 were incorrectly recorded as 91 and 13. The correct mean

For a normal curve the greatest ordinate is

If the standard deviation of 0,1,2, 3............9 in K, the standard deviation of 10,11,12,13......19 is

The variance of the data 2, 4, 6,8, 10 is.

The S.D of a variate x is S. The S.D of the variate \frac{ax+b}{c} where a,b c are constant is

The S.D of scores 1,2,3,4,5 is

The mean and SD of the marks of 200 candidates were found to be 40 and 15.Later it was discovered that a score of 40 was wrong read as 50.Th

If you drow 4 Playing card Random one by one without replacement from a well -shuffled pack of 52 cards , what is the probability that th

The equivalent conductivity of monobasic acid at infinite dilution is  348 ohm^{-1}cm^2eq^{-1}. If the resitivity of the solution containing 15g acid in 1 litre is 18.5 ohm cm , What is the degree of dissociation of acid and percentage of ionization?

Option 1)  45.9 %

Option 2)  40.2 %

Option 3)  60.4 %

Option 4)  50.7 %

The maximum KE of the photoelectron is found to be 6.63 x10-19 J, when the metal is irradiated with radiation of frequency 2 x 1015 Hz. The threshold frequency of the metal is:

The sum of five consecutive odd numbers a_{1} to a_{5} is 75. what is the sum of the five consective even number, whose end by term is sam

The sum of co-efficient in (1+x-3x^{2})^{2134} is:

A p.n. junction diode is operated in forward biasing mode at 300K temprature. The voltage at which the forward bias current equals the reverse saturation current would be

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