For the following questions answer them individually
With which of the following, the intrinsic semi conductor Silicon be doped in order to obtain p-type semi-conductor
The length of two trains arc 140 m and 160 m respectively. If they run at the speed of 60 km/h and 40 km/h respectively in opposite directions on parallel tracks, then find the time in which they will cross each other.
Which device changes the alternating e.m.f. generated by the D.C. Generator in its armature coil to D.C. ?
The angle of elevation of a ladder leaning against a wall is 60" i.e. ladder makes an angle of 60° with the ground. The foot of the ladder is 4.6 metres away from the wall. What is the length of this ladder ?
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