Recent questions tagged #mcq

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The period of oscillation of a simple pendulum is `T= 2pisqrt(L'/'g)`. Measured value of L is 20 cm known to 1 mm accuracy and time for 100 oscillations of the pendulum is found to be `90 s` using a wrist watch of Is resolution.What is the percentage error in the determination of g

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Calculate the mean percentage error in five observations, `80.0, 80.5, 81.0, 81.5 and

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Calculate the relative errors in measurement of two masses `1.02 g ± 0.01g and 9.89g +- 0.01g

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 1%, the maximum error in determining the density

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Percentage errors in the measurement of mass and speed are 2% and 3%, respectively. The error in the estimation of kinetic energy obtained by measuring mass and speed will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If the length of a pendulum is increased by 2%, then in a day, the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In an experiment, four quantities `a, b, c and d` are measured with percentage error `1%, 2%, 3% and 4%,` respectively. (Quantity P is calculated as follows `P =(a^3b^2)/(cd)`, percentage error in P

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A physical quantity `z` depends on four observables `a , b, c and d` , as `z=(a^2b^(2'/'3))/(sqrtc d^3)` The percentages of error in the measurement of `a, b, c and d` are `2%, 1.5%, 4% and 2.5%` respectively. The percentage of error in `z`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The respective number of significant figures for the numbers `23.023, 0.0003 and 2.1 xx 10^(-3)`

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If 3.8 x 10-6 is added to 42x 10'6 giving due regard to significant figures, then the result will

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The numbers `5.355 and 5.345` on rounding off to 3 significant figures will

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If mass M, distance L and time T are fundamental quantities, then find the dimensions of

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Let `l, r, c and v` represent inductance, resistance, capacitance and voltage, respectively. The dimension of `l/(rcv)` in SI rev units will

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Obtain the dimensional formula for universal gas

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Which two of the following five physical parameters have the same dimensions? I. Energy density II. Refractive index III. Dielectric constant IV. Young’s modulus V. Magnetic

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If `P ,Q, R` are physical quantities, having different dimensions, which of the following combinations can never be a meaningful

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The potential energy of a particle varies with distance x from a fixed origin as `U=(Asqrtx)/(x+B)`, where A and B are constants. The dimensions of AB

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In the formula, `X = 3YZ^2, X and Z` have dimensions of capacitance and magnetic induction. The dimensions of Y in MKSQ system

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If the velocity `v` (in `cms^(-1)`) of a particle is given in terms of `t` (in second) by the relation `v= at+b/(t + c)` then the dimensions of `a, b and c`

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A book with many printing errors contains four different formulae for the displacement y of a particle under going a certain periodic motion, where, a = maximum displacement of the particle, v = speed of the particle, T = time period of motion. Which are the correct formulae on dimensional

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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