AIPMT NEET 2014 Mock Test

Hydrogen atom in ground state is excited by a monochromatic radiation of $\lambda =975\text{A˚}$. Number of spectral lines in the resulting spectrum emitted will be:

The Binding energy per nucleon of ${}_3^7\text{Li}$ and ${}_2^4\text{He}$ nuclei are $5.60\text{MeV}$ and $7.06\text{MeV}$, respectively. In the nuclear reaction ${}_3^7\text{Li}{+}_1^1\text{H}\to 2_2^4\text{He}+Q$, the value of energy $Q$ released is:

A radio isotope 'X' with a half life $1.4\times 10^9\text{years}$ decays to 'Y' which is stable. A sample of the rock from a cave was found to contain 'X' and 'Y' in the ratio $1:7$. The age of the rock is:

The given graph represents V-I characteristic for a semiconductor device. Which of the following statement is correct?

The barrier potential of a p-n junction depends on: (a) type of semiconductor material (b) amount of doping (c) temperature. Which one of the following is correct?