MHT-CET PCB 09 MHT - CET - MHT-CET PCB 09

• A
  is equal to the thickness of the collector
  
• ✓
  is very small as compared to the thickness of emitter and collector
  
• C
  is equal to the thickness of the emitter
  
• D
  is very large as compared to the thickness of the emitter and collector
  

Answer: B.

What is the value of output voltage $V _0$ in the given circuit? 

• A
  7 V
• B
  14 V
• C
  42 V
• ✓
  6 V

Answer: D.

• A
  can be increased by heating it
  
• B
  is independent of physical parameters
  
• ✓
  Both is independent of physical parameters and cannot be increased by any method
  
• D
  cannot be increased by any method
  

Answer: C.

• ✓
  `h^2/(4pi^2m^2r^3)`
  
• B
  `h^2/(2pi^2m^2r^2)`
  
• C
  `h/(4pi^2mr^3)`
  
• D
  `h/(2pi^2m^2r^2)`
  

Answer: A.

• ✓
  $2.11 \times 10^{-34} Js$
• B
  $5.26 \times 10^{-34} Js$
• C
  $3.16 \times 10^{-34} Js$
• D
  $1.08 \times 10^{-34} Js$

Answer: A.