Question
Assertion  : The number of electrons in a P-type silicon semiconductor is less than the number of electrons in a pure silicon semiconductor at room temperature.
Reason      : It is due to law of mass action.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 

Answer

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

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 ball kept in a closed box moves in the box making collisions with the walls. The box is kept on a smooth surface. The velocity of the centre of mass:
  1. Of the box remains constant.
  2. Of the box plus the ball system remains constant.
  3. Of the ball remains constant.
  4. Of the ball relative to the box remains constant.
Which of the following waves are not electromagnetic?
Assertion :  The film which appears bright in reflected system will appear dark in the transmitted light and vice-versa.
Reason     : The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.
 
 
 
 
When a charged particle enters a uniform magnetic field its kinetic energy(a) Remains constant(b) Increases(c) Decreases(d) Becomes zero
       
The induced emf produced when a magnet is inserted into a coil does not depend upon:
In a wire of circular cross-section with radius r, free electrons travel with a drift velocity V when a current I flows through the wire. What is the current in another wire of half the radius and of the same material when the drift velocity is 2V(a) 2I(b) I(c) I/2  (d) I/4
       
For a medium, refractive indices for violet, red and yellow are 1.62, 1.52 and 1.55 respectively, then dispersive power of medium will be (a) 0.65(b) 0.22(c) 0.18(d) 0.02
       
Consider the charge configuration and spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface the electric field will be due to
You are given a resistance wire of length 50 cm and a battery of negligible resistance. In which of the following cases is largest amount of heat generated(a) When the wire is connected to the battery directly(b) When the wire is divided into two parts and both the parts connected to the battery in parallel(c) When the wire is divided into four parts and all the four connected to the battery in parallel(d) When only half the wire is connected to the battery
 
 
 
 
Assertion :   The energy (E) and momentum (p) of a photon are related by p = E/c.
Reason     :  The photon behaves like a particle.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.