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Physics

Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Quiz

Lesson 1 Quiz: Hydrogen Atomic Emission Spectrum and Production of X-Rays

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1.
If the frequency of an AC circuit containing a capacitor is doubled, its capacitive reactance (\(X_C\)) will:
B) Quadruple
C) Decrease to half its initial value
D) Remain unchanged
A) Double
2.
If both inductance \(L\) and capacitance \(C\) in a resonant circuit are doubled, the resonance frequency will:
A) Double
C) Decrease to half its original value
D) Remain unchanged
B) Quadruple
3.
In the photoelectric effect, doubling the intensity of incident monochromatic light with frequency \(\nu > \nu_c\) causes:
B) Doubling of the stopping potential \(V_s\)
D) A 50% decrease in the threshold frequency
C) Doubling of the number of emitted photoelectrons per second
A) Doubling of the maximum kinetic energy of emitted electrons
4.
The slope of the straight line obtained by plotting maximum kinetic energy of photoelectrons against the frequency of incident light represents:
A) Work function of the metal
D) Charge of the electron (\(e\))
C) Planck's constant (\(h\))
B) Speed of light in vacuum
5.
Light of frequency \(3 \times 10^{14}\) Hz shines on a metal whose threshold frequency is \(4.5 \times 10^{14}\) Hz. If the intensity is increased 100 times, the photoelectric current will be:
A) 100 times initial current
B) 10 times initial current
C) Zero
D) Infinite
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