NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Physics MCQs (Practice_Test 30 of 35)
Doorsteptutor material for competitive exams is prepared by world's top subject experts: get questions, notes, tests, video lectures and more- for all subjects of your exam.
- The hypercharge Y of an elementary particle is equal to
- Q, the charge on the particle
- B, the Baryon number
- S, the strangeness quantum number
- B + S
- The particle W-was predicted in 1963 as member of the Baryon decoupled and discovered in 1964. Its spin J, isospin I and strangeness quantum number S are J I S
- 0 − 1
- 1 − 2
- 0 − 3
- 0 + 3
- Given that Eb1 = 250 V at Ec1 =-50V, Eb2 = 180 V at Ec2 =-30 V and plate current being kept the same, the of a triode is
- 6
- 5
- 3.5
- 5.5
- Pure silicon is simultaneously doped with boron to a concentration of 1020 atoms per cubic centimeter and with phosphorus to a concentration of 7 × 1019 atoms per cubic centimeter. The number of holes per unit volume of silicon will be approximately
- 1020
- 17 × 1019
- 7 × 1019
- 3 × 1019
- The output characteristic of a bipolar junction transistor is shown in the following diagram, in the diagram, the Active region A, cut-off region B, Saturation region C and Burnout region D are respectively the regions labeled as
- n⟋a
- N⟋A
- N⟋A
- N⟋A
- Which one of the following diagram correctly indicates the widths of the space charge regions of the given pn junction?
- n⟋a
- N⟋A
- N⟋A
- N⟋A
- An electrical property (X) of a solid varies with temperature (T, in Kelvin) as shown schematically in the given diagram. This is an illustration of the variation with temperature of the
- resistivity of pure silicon
- resistivity of pure annealed cope
- conductivity of pure silicon
- conductivity of p-type silicon
- The current (J) voltage (V) characteristic of a p-n diode is as shown in the given figure. The knee voltage is at the point labeled
- C
- A
- O
- B
- Match List-I with List-II and select the correct answer.
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Physics MCQs (Practice_Test 30 of 35) List-I List-II - Emitter-base junction current
- Base current
- Emitter-Collector current
- Base-Collector
- Driff current
- Diffusion current
- Recombination
- junction current current
- A
- B
- C
- D
- 1
- 2
- 3
- 4
- 1
- 3
- 2
- 4
- 2
- 3
- 1
- 4
- 3
- 2
- 4
- 1
- The number 6.25 in the decimal notation, when converted to the binary notation will read as
- 110.100
- 101.010
- 110.010
- 101.001