List of top Questions asked in Punjab PMET- 2010

An electron tube was sealed-off during manufacture at a pressure of $ 1.2\times 10^{-7}mm $ of mercury at $ 27^{\circ}C $ . Its volume is $ 100\,cm^{3} $ . The number of molecules that remain in the tube 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
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 $ P-P-P $ bond angle in white phosphorus is
The fertilizer named Nitrolim is prepared by the use of
Which of the following is present in tenon?
Carborundum is the name of
The chemical which is known as the king of chemicals is
Soda ash is
Binding energy of nucleus is defined as
A thin convergent glass lens $ \mu =1.5 $ has a power of $ +5.0\,D $ . When this lens is immersed in a liquid of refractive index $ \mu _{1} $ it acts as a diverging lens of focal length $ 100\,cm $ . The value of $ \mu _{l} $ should be
Which one of the following types of drugs reduces fever?
Which one of the following types of drugs reduces fever ?
An inductor $ L,\,\,a $ capacitor of $ 20\mu F $ and a resistor of $ 10\Omega $ are connected in series with an $AC$ source of frequency $ 50\,Hz $ . If the current is in phase with the voltage, then the inductance of the inductor is
A rifle shoots a bullet with a muzzle velocity of $ 500\,m{{s}^{-1}} $ at a small target $ 50\,m $ away. To hit the target the rifle must be aimed (take$ g=10\,m{{s}^{-2}}) $
In an $ AC $ circuit the potential difference V and current i are given respectively by $ V=100\sin (100t) $volt and $ i=100\sin \left( 100t+\frac{\pi }{3} \right)mA $ The power dissipated in the circuit will be