List of top Physics Questions asked in AFMC

If the electric flux entering and leaving an enclosed surface respectively are $\phi_1 $ and $ \phi_2$ , the electric charge inside the surface will be
A capillary tube is attached horizontally to a constant head arrangement. If the radius of the capillary tube is increased by $10\%$, then the rate of flow of liquid will change nearly by
Total internal reflection takes place
The limiting friction is
The intensity of sound increases at night due to
The driver of a car travelling at velocity $v$ suddenly sees a broad wall in front of him at a distance $d$. He should
The degrees of freedom of a molecule of a triatomic gas are
Diameter of human eye lens is $2 \,mm$. What will be the minimum distance between two points to resolve them, which are situated at a distance of $50 \,m$ from eye? The wavelength of light is $5000\,??.
A child is swinging a swing. Minimum and maximum heights of swing from earth's surface are $0.75\, m$ and $2 \,m$ respectively. The maximum velocity of this swing is
Two friends $A$ and $B$ are waiting for another friend for tea. A took the tea in a cup and mixed the cold milk and then waits. B took the tea in the cup and then mixed the cold milk when the friend comes. Then the tea will be hotter in the cup of
Two equal drops of water are falling through air with a steady velocity $v$. If the drops coalesced what will be the new velocity?
Use of eddy currents is done in the following except
A magnetic needle is placed on a cork floating in a still lake in the northern hemisphere. Does the needle together with the cork move towards the north of the lake?
A good lubricant should have
The path of an electron in a uniform magnetic field may be
A $60 \,kg$ man stands on a spring scale in the lift. At some instant he finds, scale reading has changed from $60 \,kg$ to $50 \,kg$ for a while and then comes back to the original mark. What should we conclude?
The time of reverberation of a room $A$ is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double of those of room $A$ ?
The de-Broglie wavelength of an electron, $\alpha$-patiicle and a proton all having the same kinetic energy is respectively given as $ \lambda_e, \, \lambda_\alpha $ and $ \lambda_p $. Then which of the following is not true?
Light enters at an angle of incidence in a transparent rod of refractive index of the material of the rod the light once entered into it will not leave it through its lateral face whatsoever be the value of angle of incidence?
Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show:
$300\, J$ of work is done in sliding a $2 kg$ block up an inclined plane of height $10 \,m$. Taking $g=10\, m / s ^{2}$, work done against friction is :
$27$ small drops each having charge $q$ and radius $r$ coalesce to from big drop. How many times charge and capacitance will become?
The magnetic moment has dimensions of:
Aerofils are so designed that the speed of air:
According to Bernoulli's equation $\frac{P}{\rho g}+h+\frac{1}{2} \frac{v^{2}}{g}=$ constant The terms $A, B$ and $C$ are generally called respectively :