List of top Questions asked in BCECE

Podocytes are the cells, present in

In Pinus, male cone bears a large number of

Cleavage polyembryony occurs in

Two small magnets each of magnetic moment 10 $Am^2$ are placed in end on position 0.1 m apart from their centres. The force acting between them is

For the magnetic field to be maximum due to a small element of current carrying conductor at a point, the angle between the element and the line joining the element to the given point must be

The numerical value of charge on either plate of capacitor C shown in figure

A torque of $10^{-5}$ Nm is required to hold a magnet at $90^\circ$ with the horizontal component of the earth's magnetic field. The torque required to hold it at $30^\circ$ will be

For detecting intensity of light we use

The binding energy per nucleon, for nuclei with atomic mass number $A > 100$ decreases with $A$. The nuclear forces are weak for heavier nuclei.

The state of a thermodynamic system is represented by

A particle is vibrating in a simple harmonic motion with an amplitude of $4 \,cm$. At what displacement from the equilibrium position, is its energy half potential and half kinetic?

An uncharged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential of $V_0$. lf the common potential after sharing of charges becomes V, then the dielectric constant of the dielectric must be

0.2 F capacitor is charge to 600 V by a battery, on removing the battery, it is connected with another parallel plate condenser of I F . The potential decreases to

Late blight of potato is caused by

Streptomycin is obtained from

A spring of force constant 800 N$m^{-1}$ has an extension of 5 cm. The work done in extending it from 5 cm to 15 cm is

A proton enters a magnetic field of flux density $1.5 \,Wb / m ^{2}$ with a speed of $2 \times 10^{7} m / s$ at angle of $30^{\circ}$ with the field. The force on a proton will be

If the moment of inertia of a disc about an axis tangential and parallel to its surface be $I$, then what will be the moment of inertia about the axis tangential but perpendicular to the surface?

Angular width of central maxima in the Fraunhofer's diffraction pattern is measured. Slit is illuminated by the light of wavelength 6000 $\mathring {A}$. If slit is illuminated by light of another wavelength, angular width decreases by 30%. Wavelength of light used is

As temperature of a black body is raised, wavelength corresponding to maximum energy reduces. Higher temperature would mean higher energy and hence higher wavelength.

A capacitor of suitable capacitance can be used in an circuit in place of the choke coil. A capacitor blocks DC and allows AC only.

In an AC circuit, V and i are given by V = 100 sin (100t) volt and i = 100 sin $ \bigg( 100 t + \frac{ \pi}{ 3} \bigg) $ amp .The power dissipated in the circuit is

The angle of dip at a place on the earth gives

Torques $\tau_1 $ and $\tau_2$ are required for magnetic needle to remain perpendicular to the magnetic fields $B_1 $ and $B_2$ at two different places. The ratio $B_1 / B_2$ is

A compound has four $ sp^{3}$ hybridized covalent bonds. Its shape is