MCQ
Resistance of semiconductor at 0 K is
  • A
    Zero
  • Infinite
  • C
    Large
  • D
    Small

Answer

Correct option: B.
Infinite
 Infinite

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A conducting square loop of side l and resistance R moves in its plane with a uniform velocity u perpendicular to one of its sides. A uniform and constant magnetic field B exists along the perpendicular to the plane of the loop as shown in figure. The current induced in the loop is:
Core of elctromagnets are made of ferromagnetic materials which have:
Only paraxial rays are used in image formation by spherical mirror; because this:
An $\alpha-$particle is bombarded on ${ }^{14} \mathrm{~N}$. As a result, a ${ }^{17} \mathrm{O}$ nucleus is formed and a particle is emitted. This particle is a:
The north and south poles of two identical magnets approach a coil, containing a condenser, with equal speeds from opposite sides. Then
The drift velocity of free electrons in a conductor is ‘v’ when a current ‘i’ is flowing in it. If both the radius and current are doubled, then drift velocity will be
Electrostatic field lines $........$
Two concentric coils $X$ and $Y$ of radii $16 \,\,cm$ and $10 \,\,cm$ lie in the same vertical plane containing $N-S$ direction. $X$ has $20$ $turns$ and carries $16 \,\,A.$ $Y$ has $25$ $turns$ $\&$ carries $18\,A$. $X$ has current in anticlockwise direction and $Y$ has current in clockwise direction for an observer, looking at the coils facing the west. The magnitude of net magnetic field at their common centre is
Semiconductor is damaged by the strong current due to
A ray of light of intensity I is incident on a parallel glass-slab at a point A as shown in fig. It undergoes partial reflection and refraction. At each reflection 25% of incident energy is reflected. The rays AB and A'B' undergo interference. The ratio $\mathrm{I}_{\max } / \mathrm{I}_{\min }$ is