Physics

For $z=a^2{x}^3{y}^{\frac{1}{2}},$  where 'a' is a constant. If percentage error in measurement of 'x' and 'y' are 4% and 12% respectively, then the percentage error for 'z' will be…………%

If n represents the actual number of deflections in a converted galvanometer of resistance G and shunt resistance S. Then the total current I when its figure of merit is K will be:

The root mean square speed of smoke particles of mass 5 * 10^-17kg in their Brownian motion in air at NTP is approximately. [Given k = 1.38 * 10^-23 JK^-1]

The vertical component of the earth's magnetic field is 6 * 10^-5 T at any place where the angle of dip is 37°. The earth's resultant magnetic field at that place will be (Given tan37° = $\frac{3}{4}$ )

Identify the logic operation performed by the given circuit:

A thermodynamic system is taken from an original state D to an intermediate sate E by the linear pressure shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be

Which of the following figure represents the variation of $I_n\left(\frac{R}{R_0}\right)$ with I_nA (if R = radius of a nucleus and A = its mass number)

A proton, a neutron, an electron and an a-particle have same energy. If ${\lambda }_p,{\lambda }_n,{\lambda }_{e}and{\lambda }_{\alpha }$ and the de Broglie's wavelengths of proton, neutron, electron and a particle respectively, then choose the correct relation form the following:

What is a ring magnet made of?