Physics question and answers for March 13, 2024
- Q 14 Two corks are 10 m apart in a lake Each goes up and down with period 0 5s It is observed that when one is at its highest point...
- Q Three one dimensional mechanical waves in an elastic medium are given as y 2A sin wt kx y 2A sin wt kx y3 2A sin wt kx 1 For any...
- Q The speed of a transverse wave in an elastic string is vo If the tension in the string is reduced to half then the speed of the wave is given...
- Q A siren generates a sound with a frequency of 250Hz but when you hear the siren traveling down the road you measure a frequency of 280Hz Which answer best explains...
- Q b 6 c 9 d Zero a 3 66 A stationary sound source of frequency 334 Hz and a stationary observer O are placed reflecting surface shown in figure Velocity...
- Q Plane harmonic waves of frequency 500 Hz500 Hz are produced in air with displacement amplitude of 10 m Given that density of air is and speed of sound in air...
- Q 24 A dog is barking at a power of 40 mW Its intensity level of sound emitted at a distance 1 m from the dog is 1 90 dB 2...
- Q 90 71 6 18 4 3 A string 2 0 m long and fixed at its ends is driven by a 240 Hz vibrator The string vibrates in i third...
- Q F 74 A person P is 600 m away from the station when train is approaching station with 72 km h it blows a whistle of frequency 800 Hz when...
- Q Two students are participating in a lab where they make waves on a long spring One student starts by making 2 waves appear on the spring then gradually moves her...
- Q 33 34 35 1 2 A person B accidentally slips from a large building and screams with a sound of constant frequency n as he falls as shown in the...
- Q 23 A string of length L is stretched by L 20 and speed of transverse wave along it is v The speed of wave when it is stretched by L...
- Q A bus is moving towards a huge wall with a velocity of 5 m s The driver sounds a horn of frequency 200 Hz The frequency of the beats heard...
- Q 24 An organ pipe closed at one end has fundamental frequency of 1500 Hz The maximum number of overtones generated by this pipe which a normal person can hear is...
- Q n n n v gt w n 2v4gi n n n n n 2v 2v gt2 A person B accidentally slips from a large building and screams with a sound...
- Q Question No 45 Single Correct A n n A gt A person B accidentally slips from a large building and screams with a sound of constant frequency n as he...
- Q 0 A stationary source emits sound waves of frequency 500 Hz Two observers moving along a line passing through the source detect sound to be of frequencies 480 Hz and...
- Q In a long cylindrical tube an air column is constructed by fitting a movable piston A tuning fork of frequency 416Hz sends longitudinal sound waves Consider the speed of sound...
- Q A certain radar operates at a wavelength of 50 cm If the beat frequency between the transmitted signal and the signal reflected from aircraft Af 1kH then what will be...
- Q a Find the length of an organ pipe closed at one end that produces a fundamental frequency of 256 Hz when air temperature is 18 0 C b What is...
- Q A vibrating tuning fork of frequency n is placed near the open end of a long cylindrical tube The tube has a side opening and is also fitted with a...
- Q A submarine A travelling at 18 km h is being chased along the line of its velocity by another submarine B travelling at 27 km h B sends a sonar...
- Q 6 5 10 W O 3 3x10 W O 9 9x10 W O 3 1 10 W 4 9 10 2 W 2 0 10 W Question 8 You are...
- Q 12 The fundamental frequency of an open organ pipe is 300 Hz then which of the following is wrong 1 First overtone is 600 Hz 2 Fourth overtone is 1500...
- Q 14 A and B are two hills at a distance 480 m apart A person standing between the hills claps his hands and hears two echoes at the end of...
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