List of top Physics Questions asked in BHU UET

A man weighs $80\, kg$. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of $5 \,ms^{-2}$ What would be the reading on the scale? ($g = 10\, ms^{-2})$

An observer moves towards a stationary source of sound with a speed $1 / 5\, th$ of the speed of sound. The wavelength and frequency of the source emitted are $\lambda$ and $f$ respectively. The apparent frequency and wavelength recorded by the observer are respectively

The kinetic energy of $1 \,g$ molecule of a gas, at normal temperature and pressure is $( R = 8.31 \,J \, mol^{-1} \, K^{-1} )$

Consider a compound slab consisting of two different materials having equal thickness and thermal conductivities $K$ and $2K$ respectively. The equivalent thermal conductivity of the slab is

A ball rolls without slipping. The radius of gyration of the ball about an axis passing through its center of mass is $K$. If radius of the ball be $R,$ then the fraction of total energy associated with its rotational energy will be

When a car moves on a road with uniform speed of $30\,km /h$, then the net resultant force on the car is

The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = atomic mass unit). The binding energy of $^{4}_{2}He$ is Given, mass of helium nucleus $\approx4.0015 u.$

A ball is projected horizontally with a velocity of $4\,m s^{-1}$ from the top of a tower. The velocity of the ball after 0.7 s is (Take g = 10 $m s^{-2}$)

Air is blown through a hole on a closed pipe containing liquid. Then, the pressure will

What is the potential drop between points $A$ and $C$ in the following circuit? Resistances $ 1 \omega $ and $ 2 \omega $ are represent the internal resistance of the respective cells.

A bar magnet has a coercively $ 4\times {{10}^{3}}A{{m}^{-1}} $ . It is desired to demagnetize it by inserting it inside a solenoid $12\, cm$ long and having $60$ turns. The current carried by the solenoid should be:

Which of the following statements is true for an n-type semiconductor?

The motion of a particle varies with time according to the relation $ y=a(\sin \omega t+\cos \omega t) $

The image of a small electric bulb fixed on the wall of a room is to be obtained on the opposite wall $4\, m$ away by means of a large convex lens. The maximum possible focal length of the lens required for this purpose will be:

If boiling point of water is $ 95{}^\circ F, $ what will be reduction at celsius scale?

Carbon, silicon and germanium have four valence electrons each. These are characterized valence and conduction bands separated by energy band gap respectively equal to $ {{(Eg)}_{C}},{{(Eg)}_{Si}} $ and $ {{(Eg)}_{Ge}} $ . Which of the following statements is true?

A body moves along a circular path of radius $10\, m$ and the coefficient of friction is $0.5$. What should be its angular speed in rad/s if it is not to slip from the surface? ( $ g=9.8\text{ }m{{s}^{-2}} $ )

A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it at time $t$ is proportional to

lf the focal length of the lens is $20\, cm$. what is the distance of the image from the lens in the following figure?

The total energy of a satellite moving with an orbital velocity $v$ around the earth is

The speed of a wave on a string is $150\, ms^{-1}$ when the tension is $120\, N$. The percentage increase in the tension in order to raise the wave speed by $20\%$ is

A 0.5 kg ball moving with a speed of 12 $ms^{-1}$ strikes a hard wall at an angle of 30$^{\circ}$ with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact with the wall for 0.25 s, the average force acting on the wall is :-

There are $26$ tuning forks arranged in the decreasing order of their frequencies. Each tuning fork gives $3$ beats with the next. The first one is octave of the last. What is the frequency of $18th$ tuning fork?

Two rods of same material have same length and area. The heat $ \Delta Q $ flows through them for $12\, min$ when they are joint side by side. If now both the rods are joined in parallel, then the same amount of heat $ \Delta Q $ will flow in:

A machine which is 75% efficient, uses 12 J of energy in lifting 1 kg mass through a certain distance. The mass is then allowed to fall through the same distance. The velocity at the end of its fall is