Atomic Structure · Chemistry · IAT (IISER)
MCQ (Single Correct Answer)
1
The minimum energy needed to remove an electron from a metal corresponds to a wavelength of 500 nm . What is the total kinetic energy of all the photoelectrons ejected per second when the entire radiation from a 100 Watt bulb with a wavelength of 300 nm falls on the surface of the metal? [Planck's constant $=6.6 \times 10^{34} \mathrm{Js}$; speed of light $=3 \times 10^8 \mathrm{~ms}^{-1}$ ]
IAT (IISER) 2024
2
$$ \text { How many radial nodes does } \mathrm{Ca}^{+} \text {have in its } 4 \text { s orbital? } $$
IAT (IISER) 2023
3
The total number of nodes for a given principal quantum number $n$, and azimuthal quantum number $\ell$, are
IAT (IISER) 2020