List of top Questions asked in BHU UET

A spring balance and a physical balance are kept in a lift. In these balances equal masses are placed. lf now the lift starts moving upwards with constant acceleration, then
A sample of radioactive element has a mass of $10\, g$ at an instant $t = 0$. The approximate mass of this element in the sample after two mean lives is
A particle is thrown vertically upwards. Its velocity at half of the height is $ 10\, ms^{ - 1} $ . Then the maximum height attained by it is (Take $g = 10\,ms^{ -2} $ )
Barrier potential of $a p-n$ junction diode does not depend on
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
When a car moves on a road with uniform speed of $30\,km /h$, then the net resultant force on the car 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
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 $m s^{-2}$)
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 $\approx4.0015 u.$
Effect of pollution is observed first on
Air is blown through a hole on a closed pipe containing liquid. Then, the pressure will
Which is the most efficient converter of solar energy
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.
Calyptra is derived from
Medicine for curing respiratory problems is obtained from
'Club moss' belongs to
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 is the largest gland in an adult man
Who is known as ''father of endocrinology''
Which of the following statements is true for an n-type semiconductor?
What is the main cause for the extinction of some species in tropical forests
The motion of a particle varies with time according to the relation $ y=a(\sin \omega t+\cos \omega t) $