List of top Questions asked in VITEEE- 2011

The force on the charge at the center is:

A solenoid has 2000 turns wound over a length of 0.30 m. The area of its cross-section is \( 1.2 \times 10^{-4} \, \text{m}^2 \). Around its central section, a coil of 300 turns is wound. If an initial current of 2 A in the solenoid is reversed in 0.25 s, then the emf induced in the coil is:

An inductive circuit contains a resistance of 100 \( \Omega \) and an inductance of 0.2 H. If an AC voltage of 120 V and frequency of 60 Hz is applied to this circuit, the current in the circuit would be nearly:

In a Millikan’s oil drop experiment, the charge on an oil drop is calculated to be \( 6.35 \times 10^{-19} \, \text{C} \). The number of excess electrons on the drop is:

The values \( +\frac{1}{2} \) and \( -\frac{1}{2} \) of spin quantum number show:

The frequency of incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is:

Light of two different frequencies whose photons have energies 1 eV and 2.5 eV, respectively, successively illuminate a metal whose work function is 0.5 eV. The ratio of the maximum speed of the emitted electrons will be:

An electric bulb of 100 W is connected to a supply of electricity of 220 V. The resistance of the filament is:

Pick out the wrong statement:

The electrochemical equivalent of magnesium is 0.126 mg/C. A current of 5 A is passed in a suitable solution for 1 hour. The mass of magnesium deposited will be:

In producing chlorine through electrolysis, 100 W power at 125 V is being consumed. How much chlorine per minute is liberated? (ECE of chlorine is \( 0.367 \times 10^{-6} \, \text{kg/C} \))

A particle carrying a charge 100 times the charge on an electron is rotating per second in a circular path of radius 0.8 m. The value of the magnetic field produced at the center will be:

A rectangular loop carrying a current \( i \) is placed in a uniform magnetic field \( B \). The area enclosed by the loop is \( A \). If there are \( n \) turns in the loop, the torque acting on the loop is given by:

In a magnetic field of 0.05 T, area of a coil changes from \( 10 \, \text{cm}^2 \) to \( 100 \, \text{cm}^2 \) without changing the resistance which is 2 \( \Omega \). The amount of charge that flows during this period is:

A glass rod rubbed with silk is used to charge a gold leaf electroscope, and the leaves are observed to diverge. The electroscope is then charged with X-rays for a short period. Then the leaves will:

An infinite line charge, with coordinates \( x = 1 \) cm and charge density \( \lambda \), produces an electric field at point A at distance r from the line. If the charge on line is \( 10 \mu C \), then what is the electric field at point A?

A cube of side 5 cm is placed in a uniform field \( E \), where \( E = 5 \times 10^4 \, \text{N/C} \). The flux through the cube is:

The capacity of a capacitor is \( 4 \times 10^{-6} \, \text{F} \) and its potential is 100 V. The charge on the plates is:

Dimensions of a block are \( 1 \, \text{cm} \times 1 \, \text{cm} \times 100 \, \text{cm} \). If the specific resistance of its material is \( 3 \times 10^{-7} \, \Omega \, \text{m} \), then the resistance between the opposite rectangular faces is:

The magnitude and direction of the current in the circuit shown will be:

Which of the following will give Cannizzaro reaction?

p-toluidine and benzyl amine can be distinguished by

$CH_{3} - \overset{\underset{||}{O}}{C} - CH_{3} \ce{->[{SeO_{2}}]} X +Se +H_{2}O : X$ is

Dimensions of a block are $1\,cm � 1\,cm � 100\,cm$. If specific resistance of its material is $3\times 10^{-7} \,\Omega\, m$, then the resistance between the opposite rectangular faces is

If $\frac{x^{2}+2x+7}{2x+3} < 6, x\,\in\,R, $ then