List of top Questions asked in Rajasthan PMT

If on applying the potential of 20 V on a conductor its conductance becomes $ 8\,{{(\Omega )}^{-1}}, $ then the current flowing through it will be
The value of current J in the circuit will be
The equivalent capacitance of the circuit will be
The unit of magnetic moment is
In a step up transformer the turn ratio is 1 : 10. A resistance of $ 200\,\Omega $ connected across the secondary is drawing a current of 0.5 A. What is the primary voltage and current?
If the equivalent capacitance between A and B is $ \text{1}\text{F,} $ then the value of C will be
If the input is given between A and C, then the output at the ends of R will be
The charge on a particle Y is double the charge on particle X. These two particles X and Y after being accelerated through the same potential difference enter a region of uniform magnetic field and describe circular paths of radii R1 and R2 respectively. The ratio of the mass of X to that of Y is
An electric dipole is placed along the x-axis at the origin 0. A point P is at a distance of 20 cm from this origin such that OP makes an angle $ \text{/3} $ with the x-axis. If the electric field at P makes an angle $ \theta $ with the x-axis, the value of $ \theta $ would be
Two plane mirrors are inclined to each other at angle $ 60{}^\circ $ . Ray incident on first mirror parallel to the second mirror becomes parallel to first mirror after reflection. Angle of deviation is
The unit of magnetic moment is
In a biprism experiment by using light of wavelength $ 5000\overset{\text{o}}{\mathop{\text{A}}}\,, $ 5 mm wide fringes are obtained on a screen 1.0 m away from the coherent sources. The separation between the two coherent sources is
Electron volt is a unit of
In gamma ray emission from a nucleus
The heat of formation of $ CO(g) $ and $ C{{O}_{2}}(g) $ are $ \Delta H=-110 $ and $ \Delta H=-393\,\,kJ\,\,mo{{l}^{-1}} $ respectively. What is the heat of reaction $ (\Delta H) $ (in $ kJ\,\,mo{{l}^{-1}}) $ for the following reaction? $ CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g) $
Adipic acid on heating form
A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes SHM of time period T. If the mass is increased by m, the time period becomes $ \text{5T/3,} $ then the ratio of $ \frac{m}{M} $ is
A body executes simple harmonic motion. The potential energy (PE), the kinetic energy (KE) and total energy (TE) are measured as function of displacement x. Which of the following statements is true?
In the respect of the equation $ k=A{{e}^{-{{E}_{a}}/RT}} $ in chemical kinetics, which one of the following statements is correct?
Three point charges $ +q,-2q $ and $ +q $ are placed at points $ (x=0,y=a,x=0), $ $ (x=0,y=0,z=0) $ and $ (x=a,y=0,z=0), $ respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
Work done in placing a charge of $ 8\times 10^{-18}C $ on a condenser of capacity $100 \, \mu \, F$ is
Two spherical conductors B and C having equal radii and carrying equal charges in them repel each other with a force F when kept apart at some distance. A third spherical conductor having same radius as that of B but uncharged, is brought in contact with B, then brought in contact with C and finally removed away from both. The new force of repulsion between B and C is
The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the
Which of the following can give a Grignard reagent when reacted with magnesium in dry ether?
The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be