Modern Physics PYQ — Page 13

J.J. Thomson's cathode ray tube experiment demonstrated that:

Which of the following are suitable for the process?

A deuteron is bombard on ${ }_8 \mathrm{O}^{16}$ nuclei than $\alpha$-particle is emitted then the product nuclei is:

A sample of radioactive element contains $4 \times 10^{16}$ active nuclei. The half-life of the element is 10 decays, then number of decayed nuclei after 30 days is:

${ }_{92} \mathrm{U}^{235}$ nucleus absorbs a neutron and disintegrates in ${ }_{54} \mathrm{Xe}^{139},{ }_{38} \mathrm{Sr}^{94}$ and $x$. What will be the product $x$ ?

For which logic gate, the given truth table is shown? 

Which of the following is not the property of cathode rays?

The value of Planck's constant is:

For the given circuit of the $p-n$ junction diode which is correct? 

When ultraviolet rays incident on metal plate then the photoelectric effect does not occur, it occurs by incidence of:

In a $p-n$ junction:

If particles are moving with the same velocity, then the de Broglie wavelength is maximum for: