Recent questions tagged chapter9

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A gravitational lens may be assumed to have a varying width of the form Show that an observer will see an image of a point object as aring about the center of the lens with an angular radius`W(b)=k_1` ln `k_2/b`

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The stretching of a coil spring is determined by its shear modulus.

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The spherical ball contracts in volume by 0.1% when subjected to a uniform normal pressure of 100 atmosphere calculate the bulk modulus of material of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In the following stress – strain curve, which has:-1) Greater young’s Modulus 2) More Ductility 3) More Tensile

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A cube is subject to a pressure of `5xx10^5 N|m^2`. Each side of cube is shortened by 1% find: - 1) the volumetric strain 2) the bulk modulus of elasticity of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If the potential energy is minimum at `r = r_o = 0.74A^o`, is the force attractive or repulsive at `r = 0.5A^o; 1.9A^o and

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A hollow shaft is found to be stronger than a solid shaft made of same equal material?

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Calculate the work done when a wire of length l and area of cross – section A is made of material of young’s Modulus Y is stretched by an amount

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Water is more elastic than air.

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Explain :- 1) Elastic Body 2) Plastic Body 3)

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The length of a metal is `l_1`, when the tension in it is T1 and is `l_2` when tension is `l_2`. Find the original length of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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State Hooke’s

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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What are ductile and brittle

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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An elastic wire is cut to half its original length. How would it affect the maximum load that the wire can

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Define modulus of elasticity and write its various

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two different types of rubber are found to have the stress – strain curves as shown in the figure stress 1) In what ways do these curves suffer from the stress- strain curve of a metal wire?2) Which of the two rubbers A and B would you prefer to be installed in the working of a heavy machinery3) Which of these two rubbers would you choose for a car

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Why is the force of repulsion responsible for the formation of a solid and not the forces of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A bar of cross section A is subjected to equal and opposite tensile force F at its ends. If there is a plane through the bar making an angle Q, with the plane at right angles to the bar in the figure a) Find the tensile stress at this plane in terms of F, A and Qb) What is the shearing stress at the plane in terms of F, and Q.c) For what value of Q is tensile stress a

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Which is more elastic rubber or steel?

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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The Young’s modulus of steel is `2.0xx10^(+11) w`/`m^2`. If the interatomic spacing for the metal is `2.8xx10^(-10)m`, find the increase in the interatomic spacing for a force of `10^9 N`|`m^2` and the force

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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