Q261
Open questionWave, speed, amplitude, wavelength and frequency all are called-
Select an option to see the answer and solution.
Physics GK · all questionsSounds waves and Motion
Sounds waves and Motion
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
344
Questions
14/18
Page
Pick an option on a question to see the right answer and solution.
Q262
Open questionA particle is executing simple harmonic motion. Which one of the following statements about the acceleration of the oscillating particle is true?
Select an option to see the answer and solution.
Q263
Open questionThe wave length is usually indicated in the Greek Letter-
Select an option to see the answer and solution.
Q264
Open questionAssertion (A) The velocity of sound in air increases due to the presence of moisture in it.
Reason (R) The presence of moisture in air lowers the density of air.
Reason (R) The presence of moisture in air lowers the density of air.
Select an option to see the answer and solution.
Q265
Open questionCalculate the time period (in seconds) of a sound wave of wave length 5 metre travelling with a speed of 500 m/s.
Select an option to see the answer and solution.
Q266
Open questionIn which medium does sound travel at maximum speed?
Select an option to see the answer and solution.
Q267
Open questionWhat is the relation between frequency and time period-
Select an option to see the answer and solution.
Q268
Open questionIn which of the following mediums does the sound travel fastest at a particular temperature?
Select an option to see the answer and solution.
Q269
Open questionAssertion (A): A jet aircraft moving at mach number equal to 1 travels faster at an altitude of 15 km than while moving at mach number equal to 1 near the sea level.
Reason (R): The velocity of sound depends on the temperature of the surrounding medium.
Reason (R): The velocity of sound depends on the temperature of the surrounding medium.
Select an option to see the answer and solution.
Q270
Open questionMatch List I (Electromagnetic radiation) with List II (Approximate wavelength in metre) and select the correct answer:
| List-I | List-II |
| a. Infrared radiation | 1. 10-12 |
| b. X-rays | 2. 10-5 |
| c. Ultraviolet radiation | 3. 10-10 |
| d. Gamma rays | 4. 10-8 |
Select an option to see the answer and solution.
Q271
Open questionWhy are we able to hear short wave broadcasts better than long wave broadcasts?
Select an option to see the answer and solution.
Q272
Open questionThe depth of the trough of a wave is called its-
Select an option to see the answer and solution.
Q273
Open questionWhat are the roofs and walls of the auditorium covered to reduce echo?
Select an option to see the answer and solution.
Q274
Open questionWhat is the frequency of ultrasonic waves?
Select an option to see the answer and solution.
Q275
Open questionTo hear distinct echo the time interval between the original sound and the reflected sound must be-
Select an option to see the answer and solution.
Q276
Open questionThe maximum distance of the particle from the fixed point or mean position is called
Select an option to see the answer and solution.
Q277
Open questionTV remote control uses
Select an option to see the answer and solution.
Q278
Open questionWhen the sound passes through the air, the particles of air-
Select an option to see the answer and solution.
Q279
Open questionThrough which of the following mediums can sound not travel?
Select an option to see the answer and solution.
Q280
Open questionWhat is the lowest frequency of sound that can be heard by human beings?
Select an option to see the answer and solution.