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Physics Exercises: Waves, Optics, and Modern Physics, Exercises of Trigonometry

Nueva Vizcaya State University (NVSU)Trigonometry
Prof. Mario Farro

A series of multiple-choice questions covering fundamental concepts in physics, including wave mechanics, optics, and modern physics. The questions are designed to test understanding of topics such as wave types, doppler effect, refractive index, and wave-particle duality. Suitable for students studying introductory physics at the university or high school level.

Typology: Exercises

2022/2023

Available from 03/02/2025

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1
LECTURE NO. 1 ESAS
PHYSICS
1. Waves that travel through some material medium as it displaced from an equilibrium state is?
A. Elastic Wave C. Mechanical Wave
B. Periodic Wave D. Longitudinal Wave
2. If a disturbance is parallel to the direction of travel of wave, the wave is classified as
A. Longitudinal C. transverse
B. electromagnetic D. torsional
3. When the two waves of the same frequency, speed and amplitude traveling in opposite direction are
superimposed,
A. The phase difference is always zero C. Standing waves are produced
B. Distractive waves are produced D. Constructive interference always results to
zero
4. A stationary observer hears a siren approaching. The siren has a sound frequency of 700 Hz and is
approaching the observer at 80 km/h. What is the frequency heard by the observer? Assume the velocity
of sound in air is 332 m/s.
A. 600 Hz C. 700 Hz
B. 650 Hz D. 750 Hz
5. A steel wire 2 meters long has a mass of 2 grams and is stretched with a tension of 100 newtons. What is
the velocity of propagation of a transverse wave in the wire?
A. 422 m/sec C. 316 m/sec
B. 329 m/sec D. 300 m/sec
6. One end of a horizontal string is attached to a prong of an electrically driven tuning fork whose
frequency of vibration is 250 vib/sec. The other end passes over a pulley and supports a weight of 6 lb.
The linear weight density of the spring is 0.0133 lb/ft. What is the speed of a transverse wave in the
spring?
A. 132 ft/sec C. 130 ft/sec
B. 120 ft/sec D. 115 ft/sec
7. When a source of sound or a listener or both are in motion relative to the air, the pitch of the sound
heard by the listener is not the same as when source and listener are at rest. This phenomenon refers to?
A. Carrier wave C. Delay effect
B. Reverberation effect D. Doppler effect
8. A railroad train is traveling at 100 ft/sec in still air. The frequency of the note emitted by the locomotive
whistle is 500 Hz. What is the wavelength of the sound waves in front of the locomotive?
A. 3.0 ft C. 2.5 ft
B. 2.0 ft D. 3.4 ft
9. A railroad train is traveling at 100 ft/sec in still air. The frequency of the note emitted by the locomotive
whistle is 500 Hz. What is the wavelength of the sound waves behind of the locomotive?
A. 3.5 ft C. 2.4 ft
B. 2.8 ft D. 3.6 ft
SOURCE: DREAMFORCE REVIEW AND TRAINING CENTER
COLLEGE OF ENGINEERING,
NUEVA VIZCAYA STATE UNIVERSITY
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Download Physics Exercises: Waves, Optics, and Modern Physics and more Exercises Trigonometry in PDF only on Docsity!

LECTURE NO. 1 ESAS

PHYSICS

  1. Waves that travel through some material medium as it displaced from an equilibrium state is? A. Elastic Wave C. Mechanical Wave B. Periodic Wave D. Longitudinal Wave
  2. If a disturbance is parallel to the direction of travel of wave, the wave is classified as A. Longitudinal C. transverse B. electromagnetic D. torsional
  3. When the two waves of the same frequency, speed and amplitude traveling in opposite direction are superimposed, A. The phase difference is always zero C. Standing waves are produced B. Distractive waves are produced D. Constructive interference always results to zero
  4. A stationary observer hears a siren approaching. The siren has a sound frequency of 700 Hz and is approaching the observer at 80 km/h. What is the frequency heard by the observer? Assume the velocity of sound in air is 332 m/s. A. 600 Hz C. 700 Hz B. 650 Hz D. 750 Hz
  5. A steel wire 2 meters long has a mass of 2 grams and is stretched with a tension of 100 newtons. What is the velocity of propagation of a transverse wave in the wire? A. 422 m/sec C. 316 m/sec B. 329 m/sec D. 300 m/sec
  6. One end of a horizontal string is attached to a prong of an electrically driven tuning fork whose frequency of vibration is 250 vib/sec. The other end passes over a pulley and supports a weight of 6 lb. The linear weight density of the spring is 0.0133 lb/ft. What is the speed of a transverse wave in the spring? A. 132 ft/sec C. 130 ft/sec B. 120 ft/sec D. 115 ft/sec
  7. When a source of sound or a listener or both are in motion relative to the air, the pitch of the sound heard by the listener is not the same as when source and listener are at rest. This phenomenon refers to? A. Carrier wave C. Delay effect B. Reverberation effect D. Doppler effect
  8. A railroad train is traveling at 100 ft/sec in still air. The frequency of the note emitted by the locomotive whistle is 500 Hz. What is the wavelength of the sound waves in front of the locomotive? A. 3.0 ft C. 2.5 ft B. 2.0 ft D. 3.4 ft
  9. A railroad train is traveling at 100 ft/sec in still air. The frequency of the note emitted by the locomotive whistle is 500 Hz. What is the wavelength of the sound waves behind of the locomotive? A. 3.5 ft C. 2.4 ft B. 2.8 ft D. 3.6 ft

COLLEGE OF ENGINEERING,

  1. The techniques of finding the intensity and phase of light at any point, only when a portion of wave front is exposed. A. Quantum theory C. Huygen’s principle B. Brewster’s Law D. Polarization theory
  2. The ratio of the velocity of light in vacuum to its velocity of another material is A. Specific Index C. Refractive Index B. Poisson’s Ration D. Modulus ratio of elasticity
  3. What is the index of refraction of a material if the speed of light through material is 2.37 x 10^8 A. 1.34 C. 1. B. 1.19 D. 1.
  4. A ray of light is incident through glass, with refractive index of 1.52 on an interface separating glass and water with refractive index 1.3. What is the angle of refraction if the angle of incidence of the ray in glass is 25 °. A. 29 ° C. 26 ° B. 30 °^ D. 25 °
  5. A beam of light is incident on a liquid of 1.40 refractive index. The reflective rays are completely polarized. What is the angle of refraction of the beam? A. 40 deg C. 31 deg B. 35 deg D. 39 deg
  6. What is the critical angle, in degree, of incidence for a ray of light passing from glass into water? Assume index of refraction for glass = 1.50 and index of refraction for water = 1.33. A. 60.07 C. 65. B. 52.14 D. 62.
  7. How much should a 70 W lamp be lowered to double the illumination on an object which is 70 cm directly under it? A. 22.45 cm C. 20.50 cm B. 21.55 cm D. 26.11 cm
  8. For an object placed 25 cm from a diverging lens with a focal length of 15 cm, most nearly where is the image? What type of image is? A. 13 cm behind the lens; real image C. 18 cm behind the lens; real image B. 15 cm behind the lens; virtual image D. 9.4 cm behind the lens; virtual image
  9. The dimensions of a lantern are 3 in x 4 in. It is desired to project an image of the slide, enlarged to 6 ft x 8 ft, on a screen 30 ft from the projection lens. What should be the focal length of the projection lens? A. 20.1 in C. 24.5 in B. 14.4 in D. 19.2 in
  10. A concave mirror is to form an image of the filament of headlight lamp on a screen 4 m from the mirror. The filament is 5 mm high, and the image is to be 40 cm high. What should be the radius of the curvature of the mirror? A. 7.76 cm C. 10.03 cm B. 5.99 cm D. 9.88 cm
  11. Calculate the energy required by an electron to reach 90% of the speed of light starting from rest. A. 0.562 MeV C. 0.636 MeV B. 0.721 MeV D. 0.663 MeV

COLLEGE OF ENGINEERING,