Question

RTM Nagpur University Exam Summer 2020 'Sem-III' Physics -I
* Required
Physics - Paper- I (Sound waves, Applied acoustic, Ultrasonic and Power supply)
All questions are compulsory
What will be the mass of the string in kg, for the length ‘y’ meters, if the mass per unit length of that string is ‘m/x’ kg/m.
mx/y
my/x
xy/m
m/xy
As per the limits of human audibility the limit of sensitivity and threshold of pain or hearing are the terms related with the …………………….. parameter of the sound waves
If the change in the loudness level of a sound is 1000 times the initial value then the loudness is said to be of …………………
Find out the speed of transverse wave in the metal wire of steel of density 8 X 1000 kg/m^3 of a meter long length produce the frequency of 500 Hz
250 m/s
1km/s
500 m/s
1000 cm/s
The progressive wave which is represented by the equation, y = a sin (ωt - kx) is travelling along
Positive x-direction
Upward direction
Longitudinal direction
Transverse direction
Find out the amount of tension required to increase than its previous value so that the fundamental frequency of the vibration in the stretched string of length 100 cm increases from 200Hz to 500Hz by reducing its length to 80cm.
do not change keep as it is
thrice to initial
Four times to initial
twice to initial
If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating
Only from East to west
along both north and south
Both from East and west
Only from north to south
If the tension in the string is increased by 0.02 times, then find out the variation in the frequency
0.025
0.02
0.01
0.03
The waves which require material medium for the transfer of energy are ……………………. And the waves which do not require any medium for the transfer of energy from one place to other are……… *
Heat energy ; Radio wave
Mechanical ; Classical
Thermodynamical ; Electromagnetic
Mechanical ; Electromagnetic
Out of the following musical instrument identify the wind instrument
Santoor
Harmonium
Piano
Violin
Out of the following which statement is correct, i) the velocity of the longitudinal wave depends on the elasticity and density of the medium, ii) the frequency of the particle oscillating in the medium depends on the speed or amplitude of the wave
Both ‘i’ and ‘ii’ are correct
Only ‘i’ is correct
Both ‘i’ and ‘ii’ are wrong
Only ‘ii’ is correct
i) Microphone is a passive transducer and ii) Microphone is the transducer which converts sound energy into electrical energy *
Both ‘i’ and ‘ii’ are correct
Both ‘i’ and ‘ii’ are wrong
Only ‘ii’ is correct
Only ‘i’ is correct
According to modes of vibration in the bonded system if the fundamental frequency is 50 Hz and the length of the string is ‘l’ then what will be the frequency of first harmonic.
100/2 cycles/sec
50 meter/sec
100 cycles/sec
150 cycles/sec
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Indian contribution to medical science

Although Atreya and Agnivesa dealt with the principles of Ayurveda in 800 BC, Charaka Samhita is credited with the first Ayurvedic compilation. He was the first physician to posit the concepts of digestion, metabolism and immunity. He studied the human body and offered various remedies for numerous diseases.

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