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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. Initially null the force on the cart is equal to :
- 20 N
- 40 N
- 80 N
- zero
The correct answer is: 40 N
null
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Given T-P curve for three processes. If initial and final pressure are same for all processes then work done in process 1,2 and 3 is null respectively. Correct order is
Given T-P curve for three processes. If initial and final pressure are same for all processes then work done in process 1,2 and 3 is null respectively. Correct order is
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Figures shows the expansion of a 2m long metal rod with temperature. The volume expansion coefficient of the metal is :–
<img src="https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/620136/1/1122306/Picture116.png" alt="" width="173" height="128"
Figures shows the expansion of a 2m long metal rod with temperature. The volume expansion coefficient of the metal is :–
<img src="https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/620136/1/1122306/Picture116.png" alt="" width="173" height="128"
Physics-General
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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. The power supplied to the cart, when its velocity becomes 5 m/sec., is equal to :
on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – null Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :
Given cross-section area of jet null velocity of jet null, density of liquid null of cart null. The power supplied to the cart, when its velocity becomes 5 m/sec., is equal to :
Physics-General
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A long wire PQR is made by joning 2 wires PQ and QR of equal radii. PQ has a length 4.8 m and mass 0.06 kg, QR has length 2.56 m and mass 0.20kg. Wire PQR is under tension of 80 N. A sinusoidal wave pulse of amplitude 3.5 cm is sent along the wire PQ from end P. No power is dissipated during propagation of wave pulse. Find the amplitude of reflected wave pulse after the incident wave pulse crosses the joint Q :
A long wire PQR is made by joning 2 wires PQ and QR of equal radii. PQ has a length 4.8 m and mass 0.06 kg, QR has length 2.56 m and mass 0.20kg. Wire PQR is under tension of 80 N. A sinusoidal wave pulse of amplitude 3.5 cm is sent along the wire PQ from end P. No power is dissipated during propagation of wave pulse. Find the amplitude of reflected wave pulse after the incident wave pulse crosses the joint Q :
Physics-General
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The air column in a pipe closed at one end is made to vibrate in its second overtone by a tuning fork of frequency 440Hz. the speed of the sound in air is 330 m/s. end corrections may be neglected. Let P0 denote the mean pressure at any point in the pipe and DP0 the maximum aplitude of pressure variation then The maximum and minimum pressure at the open end of the pipe are respectively
The air column in a pipe closed at one end is made to vibrate in its second overtone by a tuning fork of frequency 440Hz. the speed of the sound in air is 330 m/s. end corrections may be neglected. Let P0 denote the mean pressure at any point in the pipe and DP0 the maximum aplitude of pressure variation then The maximum and minimum pressure at the open end of the pipe are respectively
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Two trains A and B are moving with speeds 20 m/ s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of trains A blows a long whistle
Assume that the sound of the whistle is composed of components varying in frequency from f1 = 800 Hz to f2 = 1120 Hz, as shown in the figure. The spread in the frequency (highest frequency – lowest frequency) is thus 320 Hz. The speed of sound in still air is 340 m/s
The spread of frequency as observed by the passengers in train B is
Two trains A and B are moving with speeds 20 m/ s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of trains A blows a long whistle
Assume that the sound of the whistle is composed of components varying in frequency from f1 = 800 Hz to f2 = 1120 Hz, as shown in the figure. The spread in the frequency (highest frequency – lowest frequency) is thus 320 Hz. The speed of sound in still air is 340 m/s
The spread of frequency as observed by the passengers in train B is
Physics-General
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Two trains A and B are moving with speeds 20 m/ s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of trains A blows a long whistle
Assume that the sound of the whistle is composed of components varying in frequency from f1 = 800 Hz to f2 = 1120 Hz, as shown in the figure. The spread in the frequency (highest frequency – lowest frequency) is thus 320 Hz. The speed of sound in still air is 340 m/s
The distribution of the sound intensity of the whistle as observed by the passengers in train A is best represented by
Two trains A and B are moving with speeds 20 m/ s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of trains A blows a long whistle
Assume that the sound of the whistle is composed of components varying in frequency from f1 = 800 Hz to f2 = 1120 Hz, as shown in the figure. The spread in the frequency (highest frequency – lowest frequency) is thus 320 Hz. The speed of sound in still air is 340 m/s
The distribution of the sound intensity of the whistle as observed by the passengers in train A is best represented by
Physics-General
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Two trains A and B are moving with speeds 20 m/ s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of trains A blows a long whistle
Assume that the sound of the whistle is composed of components varying in frequency from f1 = 800 Hz to f2 = 1120 Hz, as shown in the figure. The spread in the frequency (highest frequency – lowest frequency) is thus 320 Hz. The speed of sound in still air is 340 m/s
The speed of sound of the whistle is
Two trains A and B are moving with speeds 20 m/ s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of trains A blows a long whistle
Assume that the sound of the whistle is composed of components varying in frequency from f1 = 800 Hz to f2 = 1120 Hz, as shown in the figure. The spread in the frequency (highest frequency – lowest frequency) is thus 320 Hz. The speed of sound in still air is 340 m/s
The speed of sound of the whistle is
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In an organ pipe (may be closed or open) of 99 cm length standing wave is setup, whose equation is given by longitudinal displacement null Where y is measured from the top of the tube in centimeters and it in t second
Assume end correction approximately equals to (0.(C) x (diameter of tube), estimate teh approximate number of moles of air present inside the tube (Assume tube is at NTP, and at NTP, 22.4 litre contains 1 mole)
In an organ pipe (may be closed or open) of 99 cm length standing wave is setup, whose equation is given by longitudinal displacement null Where y is measured from the top of the tube in centimeters and it in t second
Assume end correction approximately equals to (0.(C) x (diameter of tube), estimate teh approximate number of moles of air present inside the tube (Assume tube is at NTP, and at NTP, 22.4 litre contains 1 mole)
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In an organ pipe (may be closed or open) of 99 cm length standing wave is setup, whose equation is given by longitudinal displacement null Where y is measured from the top of the tube in centimeters and it in t second
Equation of the standing wave in terms of excess pressure is ___ (Bulk modulus of air 
In an organ pipe (may be closed or open) of 99 cm length standing wave is setup, whose equation is given by longitudinal displacement null Where y is measured from the top of the tube in centimeters and it in t second
Equation of the standing wave in terms of excess pressure is ___ (Bulk modulus of air
Physics-General
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In an organ pipe (may be closed or open) of 99 cm length standing wave is setup, whose equation is given by longitudinal displacement null Where y is measured from the top of the tube in centimeters and it in t second
The upper end and the lower end of the tube are respectively
In an organ pipe (may be closed or open) of 99 cm length standing wave is setup, whose equation is given by longitudinal displacement null Where y is measured from the top of the tube in centimeters and it in t second
The upper end and the lower end of the tube are respectively
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A source of oscillations S is fixed to the riverbed of a river with stream velocity u. Two receivers null are fixed also to the riverbed. If the source generates frequency fs, the frequencies received by receivers R1 and R2 are respectively f1 and f2 then
A source of oscillations S is fixed to the riverbed of a river with stream velocity u. Two receivers null are fixed also to the riverbed. If the source generates frequency fs, the frequencies received by receivers R1 and R2 are respectively f1 and f2 then
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In the figure shown a source of sound of frequency 510Hz moves with constant velocity null in the direction shown. The wind is blowing at a constant velocity null towards an observer who is at rest at point B. Corresponding to the sound emitted by the source at initial position A, the frequency detected by the observer is equal to (speed of sound relative to air = 330 m/s)
In the figure shown a source of sound of frequency 510Hz moves with constant velocity null in the direction shown. The wind is blowing at a constant velocity null towards an observer who is at rest at point B. Corresponding to the sound emitted by the source at initial position A, the frequency detected by the observer is equal to (speed of sound relative to air = 330 m/s)
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An aluminium wire of length 60cm is joined to a steel wire of length 80 cm and stretched between two fixed supports
The tension produced is 40 N. The cross - sectional areas of the steel and aluminium Wires are null respectively. The densities of steel and aluminium are null respectively. The frequency of first overtone of this composite wire with the joint as a node is nearly
An aluminium wire of length 60cm is joined to a steel wire of length 80 cm and stretched between two fixed supports
The tension produced is 40 N. The cross - sectional areas of the steel and aluminium Wires are null respectively. The densities of steel and aluminium are null respectively. The frequency of first overtone of this composite wire with the joint as a node is nearly
Physics-General
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Four waves are described by equations as follow 
and their resultant wave is calculated as 
then………..(symbols have their usual meanings)
Four waves are described by equations as follow and their resultant wave is calculated as then………..(symbols have their usual meanings)
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