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

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

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

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