Physics Past Questions and Answers

A radioactive isotope has a decay constant of 10<sup style='font-size: smaller;'>-5</sup>s<sup style='font-size: smaller;'>4</sup>. Calculate half life

The electrical properties of germanium can be altered drastically by the addition of impurity. This process is referred to as

If the threshold frequency for tungsten is 1.3 x 10<sup style='font-size: smaller;'>15</sup>Hz, what is its work function?<br/>[H = 6.6 x 10<sup style='font-size: smaller;'>-34</sup> Js]

Which of the following will be applied when a metal Y is used to electroplate another metal X in electrolysis?

The diagram above shows two vectors at right angles to each other. The value of the resultant vector is