Recent questions without answers

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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

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

0 votes

0 answers

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

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

0 votes

0 answers

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

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

0 votes

0 answers

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)

0 votes

0 answers

Obtain the dimensional formula for universal gas

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

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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)

0 votes

0 answers

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`

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

0 votes

0 answers

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)

0 votes

0 answers

If speed V, area A and force F are chosen as fundamental units, then the dimensional formula of Young’s modulus will

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

0 votes

0 answers

If dimensions of critical velocity `v_c` of a liquid flowing through a tube are expressed as `[eta^x rho^y r^z]`, where `eta, rho and r` are the coefficient of viscosity of liquid, density of liquid and radius of the tube respectively, then the values of `x, y and z` are given

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

0 votes

0 answers

The density of a material in CGS system is `10 g cm^(-3)`. If unit of length becomes 10 cm and unit of mass becomes 100 g, the new value of density will

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

0 votes

0 answers

When 1 m, 1 kg and 1 min are taken as the fundamental units, the magnitude of the force is 36 units. What will be the value of this force in CGS

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

Recent questions without answers

Categories