List of top Questions asked in Punjab PMET

A short linear object of length $b$ lies along the axis of a concave mirror of focal length $f$ at a distance $u$ from the pole of the mirror, what is the size of image?
A count rate metre shows a count of $240/\min$ from a given radioactive source later the metre shows a count rate of $30/\min$. The half-life of the source is
A cane filled with water is revolved in a vertical circle of radius $4\, m$ and the water does not fall down. What must be the maximum period of revolution?
A copper wire of length $1\, m$ and radius $1\, mm$ is joined in series with an iron wire of length $2\, m$ and radius $3\, mm$ and a current is passed through the wires. The ratio of the current density in the copper and iron wires is
When a wire is stretched and its radius becomes $\frac {r}{2}$. then its resistance will be
A body of mass $m$ moving with velocity $v$ makes a head-on collision with another body of mass $2\, m$ which is initially at rest. The loss of kinetic energy of the colliding body (mass $m$ ) is
Menstrual flow occurs due to lack of
The type of epithelial cells which line the inner surface of fallopian tubes, nasal passage, bronchioles and small bronchi is known as
The bacteria are considered to be plants because they
Central dogma of genetic information is modified by the discovery of
Enzyme found functional in lysosome is
Which of the following is balancing organ?
$Zn, Mo, Fe, Cu$ are
Which of the following is a non-excitable, variously shaped and found between neurons?
Yellow bone marrow is found especially in the medullary cavity of
$3$-PGA is first stable product ill
$2$ mole of ideal gas at $ 27^{\circ}C$ temperature is expanded reversibly from $2\,L$ to $20\,L$ . Find entropy change $(R=2\,cal/mol\,K)$
In a closed insulated container a liquid is stirred with a paddle to increase the temperature, which of the following is true?
Unit of entropy is
van der Waals real gas, act as an ideal gas, at which condition?
In hydrogen atom, energy of first excited state is $ -3.4\,eV$ . Then $KE$ of same orbit of hydrogen atom is
Two identical induction coils each of inductance $L$ joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other, what is net inductance?
A beaker is completely filled with water at $4^{\circ} C$. It will overflow if
An ice block contains a glass ball. When the ice melts within the water containing vessel, the level of water:
Which of the following metals is most reactive towards water?