List of top Questions asked in AIIMS

A lead shot of $1\, mm$ diameter falls through a long column of glycerine. The variation of its velocity $v$ with distance covered is represented by
A black body, at a temperature of $227^{\circ} C$, radiates heat at a rate of $20 \,cal\, m ^{-2} s ^{-1} .$ When its temperature is raised to $727^{\circ} C$, the heat radiated by it in $cal \,m ^{-2} s ^{-1}$ will be closest to
A double slit experiment is performed with light of wavelength $500\, nm$. A thin film of thickness $2\, \mu m$ and refractive index $1.5$ is introduced in the path of the upper beam. The location of the central maximum will
A beam of charged particles is employed in the treatment of cancer. Charged particles on passing through a material medium lose their energy by causing ionization of the atoms along their path.
The motion of planets in the solar system is an example of conservation of
The resistivity of a semiconductor increases with temperature. The atoms of a semiconductor vibrate with large amplitude at higher temperatures there by increasing its resistivity.
A rectangular loop carrying a current $i_{1}$, is situated near a long straight wire carrying a steady current $i_{2}$. The wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the figure. Then the current loop will
The difference in the lengths of a mean solar day and a sidereal day is about
In short wave communication, waves of which of the following frequencies will be reflected back by the ionospheric layer having electron density $10^{11}$ per $m ^{3}$ ?
In an experiment to find the focal length of a concave mirror a graph is drawn between the magnitudcs of $u$ and $v$. The graph looks like
In an ideal parallel $LC$ circuit, the capacitor is charged by connecting it to a $DC$ source which is then disconnected. The current in the circuit
Biological Oxygen Demand (BOD) is a measure of
What is the path difference for destructive interference?
Wobble hypothesis was given by
The heat of neutralization of a strong base and a strong acid is $57 kJ .$ The heat released when $0.5$ mole of $HNO _{3}$ solution is added to $0.20 moles$ of $NaOH$ solution, is
The Cauchy's dispersion formula is
Which of the following has the highest dipole moment?
Teflon is a polymer of
For the reaction : $ {H2 + Cl2 ->[{\text{sunlight}}] 2HCl}$ the order of reaction is
Algae are useful because they
Megasporophyll of Cycas has the same nature as
Atoms can neither be created nor destroyed. Under similar condition of temperature and pressure, equal volume of gases does not contain equal number of atoms.
An electron having charge $e$ and mass $m$ is moving in a uniform electric field $E .$ Its acceleration will be
The $pH$ of solution containing $0.10\, M$ sodium acetate and $0.03\, M$ acetic acid is $ \left( pK _{a} \text { for } CH _{3} COOH =4.57\right) $
Brilliance of diamond is due to