An electron is accelerated from rest through a potential difference of V volts. If the de Broglie wavelength of the electron is 1.227 × 10-2 nm, then the potential difference V is:

Which of the following territories was annexed by Lord Dalhousie under the pretext of misgovernance, and not directly through the Doctrine of Lapse?

What was the primary stated reason for the Partition of Bengal in 1905 by Lord Curzon?