List of top Questions asked in Punjab PMET

A wheel is rotating at $ 900\,\,rpm $ about its axis. When the power is cut off it comes to rest in $ 1\min $ . The angular retardation in $ rad/{{s}^{2}} $ is
Galileo writes that for angles of projection of a projectile at angles $\left(45^{\circ}+\theta\right)$ and $\left(45^{\circ}-\theta\right)$, the horizontal ranges described by the projectile are in the ratio
The potential energy of a weightless spring compressed by a distance a is proportional to
The plane of a dip circle is set in the geographic meridian and the apparent dip is $\delta_1$. It is then set in a vertical plane perpendicular to the geographic meridian. The apparent dip angle is $\delta_2$. The diclination $\theta$ at the plane is
The wavelength of the first line of Balmer series is $6563\,??. The Rydberg constant for hydrogen is about
Two masses $ M $ and $ m $ are attached to a vertical axis by weightless thread of combined length $ l. $ They are set in rotational motion in a horizontal plane about this axis with constant angular velocity $ \omega $ . If the tensions in the thread are same during motion, the distance of M from the axis is,
A uniform rope of length $L$, resting on a frictionless horizontal surface, is pulled at one end by a force $F$. The tension in the rope at a distance $I$ from this end is
A body starts to fall freely under gravity. The distances covered by it in first, second and third seconds are in ratio
Bulk modulus of water is $ 2\times 10^{9}N/m^{2}$ . The change in pressure required to increase the density of water by $0.1\%$ is
A body of mass $5\, kg $ is moving with a momentum of $10\,kg\,m/s $ . A force of $ 0.2\,N $ acts on it in the direction of motion of the body for $10\, s$. The increase in its kinetic energy is
A thin circular ring of mass $ M $ and radius $ r $ is rotating about its axis with constant angular velocity $ \omega $ . Two objects each of mass $ m $ , are placed gently at the opposite ends of diameter of the ring. The ring now rotates with an angular velocity
The unit of specific conductivity is
Radius of gyration of disc of mass 50 g and radius 2.5 cm about an axis passing through its center of gravity and perpendicular to the plane is
If $ 70\,cal $ of heat is required to raise the temperature of $2$ mole of an ideal gas at constant pressure from $ 30^{\circ}C $ to $ 35^{\circ}C $ , then the amount of heat required to raise the temperature of same gas through same range at constant volume is
Power supplied to a particle of mass $ 2\,kg $ varies with time as $ P=3{{t}^{2}}/2 $ watt, where t is in second. If velocity of particle at $ t=0 $ is $ v=0, $ the velocity of particle at $ t=2s $ will be
A stone is dropped from a certain height which can reach the ground in $5\,s$. If the stone is stopped after $3\, s$ of its fall and then allowed to fall again, then the time taken by the stone to reach the ground for die remaining distance is
The unit of specific conductivity is
A voltmeter of resistance $ 1000\,\Omega $ gives full scale deflection when a current of $ 100\,mA $ flows through it. The shunt resistance required across it to enable it to be used as an ammeter reading $ 1\,A $ at full scale deflection is
Two point-charges $ \pm 10\mu C $ are placed $ 5.00\,mm $ apart, forming an electric dipole. Compute electric field at a point on the axis of the dipole $ 15\,cm $ away from the centre on a line passing through the centre dipole.
A bar magnet of length $3\, cm$ has points $A$ and $B$ along its axis at distances of $24 \,cm$ and $48\, cm$ on the opposite sides. Ratio of magnetic fields at these points will be
A short bar magnet placed with its axis at $ 30^{\circ} $ with a uniform external magnetic field of $ 0.16\,T $ experiences a torque of magnitude $ 0.032\,J $ . The magnetic moment of the bar magnet will be
Which one is the correct representation of $ NH_{4}^{+} $ ion?
The fertilizer named Nitrolim is prepared by the use of
The $ P-P-P $ bond angle in white phosphorus is
Carborundum is the name of