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General
Easy
Question
A fine steel wire of length 4m is fixed rigidly in a heavy brass frame as shown in figure. It is just taut at null. The tensile stress developed in steel wire if whole system is heated to null is :–
The correct answer is:
Stress = Y (strain) =null
Related Questions to study
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Figures shows the expansion of a 2m long metal rod with temperature. The volume expansion coefficient of the metal is :–
Figures shows the expansion of a 2m long metal rod with temperature. The volume expansion coefficient of the metal is :–
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The figure shows two thin rods, one made of aluminum null and the other of steel null. Each rod has the same length and the same initial temperature. They are attached at one end to two separate immovable walls. Temperature of both the rods is increased by the same amount, until the gap between the rods vanishes. Where do the rods meet when the gap vanishes?
The figure shows two thin rods, one made of aluminum null and the other of steel null. Each rod has the same length and the same initial temperature. They are attached at one end to two separate immovable walls. Temperature of both the rods is increased by the same amount, until the gap between the rods vanishes. Where do the rods meet when the gap vanishes?
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 – 
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 
velocity of jet 
, density of liquid 
of cart 
. 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 – 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 velocity of jet , density of liquid of cart . The power supplied to the cart, when its velocity becomes 5 m/sec., is equal to :
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 time at which velocity of cart becomes 2 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 time at which velocity of cart becomes 2 m/sec, is equal to
Physics-General
Physics-
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. In the above problem, what is the acceleration of cart at this instant –
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. In the above problem, what is the acceleration of cart at this instant –
Physics-General
Physics-
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. Velocity of cart at t = 10 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. Velocity of cart at t = 10 sec. is equal to :
Physics-General
Physics-
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 :
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 :
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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
Physics-General
Physics-
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
Physics-
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 :
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Physics-
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 :
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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
Physics-
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
Physics-
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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