Curriculum
Login

Curriculum

Physics

Chapter 1 - Electric Current, Ohms Law and Kirchhoffs Laws

0/20

Chapter 2 - Magnetic Effects of Electric Current and Measuring Instruments

0/22

Chapter 3 - Electromagnetic Induction and AC Dynamo and Transformer

0/24

Chapter 4 - Alternating Current AC Circuits

0/30

Chapter 5 - Dual Nature of Wave and Particle

0/33

Chapter 6 - Atomic Spectra and X-Rays

0/28

Chapter 7 - Lasers and Principles

0/31

Chapter 8 - Modern Electronics and Semiconductors

0/31

More lessons

0/83
Quiz

Lesson 2 Quiz: Combined RLC Circuits, Impedance and Electrical Resonance

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 9
Start Quiz
1.
What happens to the resonance frequency of an RLC circuit if both the inductance of the coil (L) and the capacitance of the capacitor (C) are halved?
It is halved
It quadruples
It remains unchanged
It doubles (increases by 2 times)
2.
The hydrostatic pressure exerted by a static homogeneous liquid of density rho at depth h beneath its free surface is expressed by:
P = rho * h / g
P = rho * g * h
P = rho * g / h
P = 1/2 rho * g * h2
3.
In a U-tube manometer containing two immiscible liquids in equilibrium, the heights of the liquid columns measured above the separating surface are:
Directly proportional to their densities
Equal regardless of the liquids used
Proportional to the square of the cross-sectional area of the tube
Inversely proportional to their respective densities (h1 / h2 = rho2 / rho1)
4.
A U-tube contains water (ρ = 1000 kg/m3) and oil (ρ = 800 kg/m3). If the oil column height above the interface is 10 cm, the balancing water column height is:
12.5 cm
10 cm
8 cm
6.4 cm
5.
The universal gas constant R in SI units has the numerical value and dimensions of:
6.022 x 1023 J / K
1.38 x 10−23 Pa . m3
8.314 J / (mol . K)
0.0821 J / mol
6.
An air bubble released from the bottom of a deep lake expands in volume as it rises towards the surface because:
The bubble absorbs water molecules into its gas phase
The water temperature at the surface is near absolute zero
The hydrostatic pressure decreases as depth decreases, allowing the trapped air to expand according to Boyle's law
Atmospheric pressure increases at the surface
7.
In the photoelectric effect, doubling the intensity of incident monochromatic light with frequency \(\nu > \nu_c\) causes:
B) Doubling of the stopping potential \(V_s\)
A) Doubling of the maximum kinetic energy of emitted electrons
D) A 50% decrease in the threshold frequency
C) Doubling of the number of emitted photoelectrons per second
8.
The primary function of Helium gas in the Helium-Neon laser tube is to:
C) Cool the quartz tube by rapid convection
B) Excite Neon atoms to their metastable state via resonant collision
A) Directly emit the red laser beam at 632.8 nm
D) Act as a partially reflecting output mirror
9.
According to the Egyptian Physics syllabus, what is the valid physical deduction for: Einstein's Photoelectric Equation and Work Function?
Photoelectron emission occurs at any frequency if intensity is high enough
Increasing light intensity increases the maximum kinetic energy of emitted electrons
Photoelectrons are emitted only if the incident photon frequency exceeds the threshold frequency (ν ≥ ν_c), and maximum kinetic energy is KE_max = hν - E_w, independent of light intensity
Work function E_w is universal and identical for all metals
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9