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Electronics Physics - Electronics

Uttarakhand Board (UBSE) - STD 12 Science - Physics (Uttarakhand - English Medium). 413 questions in this chapter.

Question types

Electronics question types

413 questions across 1 question group — pick any mix to generate a Physics paper with step-by-step answer keys.

413
Questions
1
Question groups
5
Question types
Sample Questions

Electronics questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark
Assertion : A P-N photodiode is made from a semiconductor for which $E_g=2.8 \mathrm{~eV}$. This photo diode will not detect the wavelength of 6000 nm.
Reason : A PN photodiode detect wavelength l if $\frac{h c}{\lambda}>E_e$.
  • ✓
    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.

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Q 2M.C.Q (1 Marks)1 Mark
Assertion : De-morgan's theorem $\overline{A+B}=\bar{A} \cdot \bar{B}$ may be explained by the following circuit

Reason : In the following circuit, for output inputs ABC are 101
  • 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.
  • ✓
     If assertion is true but reason is false.
  • D
     If the assertion and reason both are false.

Answer: C.

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Q 3M.C.Q (1 Marks)1 Mark
Assertion $: 29$ is the equivalent decimal number of binary number $11101.$
Reason $:(11101)_2=\left(1 \times 2^4+1 \times 2^3+1 \times 2^2+0 \times 2^1+1 \times 2^0\right)_{10}=(16+8+4+0+1)_{10}=(29)_{10}$
  • ✓
    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.

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Q 4M.C.Q (1 Marks)1 Mark
The frequency response curve of RC coupled amplifier is shown in figure. The band width of the amplifier will be
  • A
    $f_3-f_2$
  • ✓
    $f_4-f_1$
  • C
    $\frac{f_4-f_2}{2}$
  • D
    $f_3-f_1$

Answer: B.

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Q 5M.C.Q (1 Marks)1 Mark
Assertion : NOT gate is also called inverter circuit.
Reason : NOT gate inverts the input order.
  • ✓
     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.

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