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Quiz 54
Mdcat-past-papers Quiz
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1061. The intensity level (sound level) of faintest audible intensity is:
160 decibel
Zero decibel
140 decibel
120 decibel
1062. If the wavelength of a light is 3 × 10⁻⁷ m, then what is its frequency?
1 × 10¹⁴ Hz
1 × 10¹⁵ Hz
1 × 10¹³ Hz
1 × 10¹⁶ Hz
1063. The energy of light is determined by its:
Frequency
Intensity
Amplitude
Speed
1064. The product of frequency and wavelength of a wave equals to:
Displacement of the wave
Amplitude of the wave
Speed of the wave
Time period of the wave
1065. Wavelength of a wave is defined as:
Distance between two consecutive crests
Distance between two alternate crests
Distance between two alternate troughs
Distance between crest and trough
1066. Maximum displacement of particles from its mean position is called:
Wavelength
Amplitude
Trough
Crest
1067. The ultrasonic waves have frequency higher than:
20 Hz
20 kHz
200 Hz
2000 kHz
1068. Continuous, regular and rhythmic disturbance of a source causes ___ in the medium.
Complex waves
Stationary waves
Electromagnetic waves
Periodic waves
1069. A wave generator produces 500 pulses in 50 s. Its frequency will be:
10 s⁻¹
0.1 s⁻¹
500 s⁻¹
50 s⁻¹
1070. Amplitude in the following figure is given as:
2 m
½ m
¼ m
1 m
1071. The product of "T" and "f" of a wave is equal to:
Zero
1
2
3
1072. Wavelength λ can be found:
λ = v/f
λ = 1/d
λ = 1/T
λ = v/f
1073. Circular periodic waves can be generated:
In a ripple tank using spherical dippers
Using electromagnetic vibrator
By giving sudden up and down movement to a rope with one fixed end
All of the above
1074. The distance covered by a sound wave per unit time is:
Speed of sound wave
Velocity of sound wave
Wavelength of sound wave
Amplitude of sound wave
1075. Accelerating electromagnetic charges radiate electromagnetic waves which propagate at the:
Speed of electromagnetic waves
Frequency of electromagnetic waves
Frequency of light
Speed of light
1076. The waves in which the particles of the medium vibrate about their mean position along the direction of propagation of the waves are called:
Longitudinal waves
Transverse waves
Mechanical waves
Electromagnetic waves
1077. The number of waves passing through a certain point in unit time is called:
Wave speed
Wavelength
Time period of wave
Frequency of waves
1078. A wave is characterized by three physical parameters:
Amplitude, Wavelength, Acceleration
Frequency, Wavelength, Acceleration
Wavelength, Frequency, Speed
Displacement, Wavelength, Speed
1079. Which type of waves can be polarized?
Longitudinal waves
Mechanical waves
Transverse waves
Sound waves
1080. For longitudinal waves:
The particles oscillate perpendicular to propagation
Particles remain stationary
The particles oscillate along direction of propagation
Velocity is enhanced in vacuum
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