List of top Physics Questions asked in AIIMS

A thin stainless steel needle can lay floating on a still water surface. Any object floats when the buoyancy force balances the weight of the object.

In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium:

A wire mesh consisting of very small squares is viewed at a distance of $8 \,cm$ through a magnifying converging lens of focal length $10\, cm$, kept close to the eye. The magnification produced by the lens is

A lens is made of flint glass (refractive index $=1.5$ ). When the lens is immersed in a liquid of refractive index $1.25$, the focal length :

A judo fighter in order to throw his opponent on to the mat tries to initially bend his opponent and then rotate him around his hip. As the mass of opponent is brought closer to the fighter?s hip, the force required to throw the opponent is reduced.

${ }_{92}^{238} U$ has $92$ protons and $238$ nucleons. It decays by emitting an alpha particle and becomes:

An amplifier has a voltage gain $A_{v}=1000$. The voltage gain in $dB$ is :

If a street light of mass $M$ is suspended from the end of a uniform rod of length $L$ in different possible patterns as shown in figure, then :

Two spheres of same size, one of mass $2\, kg$ and another of mass $4 \,kg$, are dropped simultaneously from the top of Qutab Minar (height $=72\, m$ ). When they are $1 \,m$ above the ground, the two spheres have the same :

When a $p-n$ junction diode is reverse biased, then

A boat at anchor is rocked by waves whose crests are $100\, m$ apart and velocity is $25\, m/\sec$. The boat bounces up once in every

A leaf which contains only green pigments, is illuminated by a laser light of wavelength $0.6328\, \mu m$. It would appear to be :

In refraction, light waves are bent on passing from one medium to the second medium, because in the second medium

For a constant hydraulic stress on an object, the fractional change in the object's volume $(\Delta V / V)$ and its bulk modulus $(B)$ are related as :

A $50\, Hz$ AC source of $20$ volts is connected across $R$ and $C$ as shown in figure. The voltage across $R$ is $12$ volt. The voltage across $C$ is

Which of the following functions represents a simple harmonic oscillation?

The pressure exerted by an electromagnetic wave of intensity $I\left( W / m ^{2}\right)$ on a non-reflecting surface is: $[c$ is the velocity of light $]$

Which of the following logic gates is a universal gate?

When $a$ ball is thrown up vertically with velocity $v_0$, it reaches a maximum height of $h$. If one wishes to triple the maximum height then the ball should be thrown with velocity

Two infinitely long parallel conducting plates having surface charge densities $+\sigma$ and $-\sigma$ respectively, are separated by a small distance. The medium between the plates is vacuum. It $\varepsilon_{0}$ is the dielectric permittivity of vacuum, then the electric field in the region between the plates is:

The diamagnetic species is

The apparent depth of water in cylindrical water tank of diameter $2R\, cm$ is reducing at the rate of $x\, cm/$minute when water is being drained out at a constant rate. The amount of water drained in c.c. per minute is ($n_1$ = refractive index of air, $n_2$ = refractive index of water).

For sky wave propagation of $10\, MHz$ signal, what should be the minimum electron density in ionosphere?

Dimension of electrical resistance is

The clouds in sky generally appear to be whitish. Diffraction due to clouds is efficient in equal measure at all wavelengths.