AIEEE 2006 Mock Test

If the binding energy per nucleon in ${}_3{\text{Li}}^7$ and ${}_2{\text{He}}^4$ nuclei are $5.60\text{MeV}$ and $7.06\text{MeV}$ respectively, then in the reaction ${}_1{\text{H}}^1+{}_3{\text{Li}}^7\to 2{}_2{\text{He}}^4$, the energy released is:

If the lattice constant of a semiconductor is decreased, then which of the following is correct?

In the following, which one of the diodes is reverse biased?

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?

A long solenoid has $200$ turns per cm and carries a current $i$. The magnetic field at its centre is $6.28\times 10^{-2}{\text{Wb/m}}^2$. Another long solenoid has $100$ turns per cm and it carries a current $i/3$. The value of the magnetic field at its centre is: