The strain stress curves of three wires of different materials are shown in the figure. P, Q and R are the elastic limits of the wires. The figure shown thatA. Elasticity of wire P is maximumB. Elasticity of wire Q is maximumC. Tensile strength of R is maximumD. None of the above is true.

The strain stress curves of three wires of different materials are sh

1.	The strain stress curves of three wires of different materials are shown in the figure. P, Q and R are the elastic limits of the wires. The figure shown thatA. Elasticity of wire P is maximumB. Elasticity of wire Q is maximumC. Tensile strength of R is maximumD. None of the above is true.
Answer» Correct Answer - D As stress is shown of x-axis and strain on y-axis So we can say that `Y=cottheta=(1)/(tantheta)=(1)/(slope)` so elasticity of wire P is minimum and of wire `R` is maximum.

Discussion

No Comment Found

Related InterviewSolutions

A film of water is formed between two straight parallel wires of length 10 cm each separated by `0.5cm` If their separation is increased by `1mm` while still maintaining their parallelism, how much work will have to be done (Surface tension of water `=7.2xx10^-2(N)/(m)`)A. `7.22xx10^-6Joule`B. `1.44xx10^-5joule`C. `2.88xx10^-5joule`D. `5.76xx10^-5joule`
A ball falling in a lake of depth `200 m` shows a decrease of `0.1% ` in its volume at the bottom. The bulk modulus of elasticity of the material of the ball is (take `g = 10 ms^(-2)`)A. `10^8`B. `2xx10^8`C. `10^9`D. `2xx10^9`
If pressure at half the depth of a lake is equal to 2//3 pressure at the bottom of the lake then what is the depth of the lake ?A. `10m`B. `20m`C. `60m`D. `30m`
The work per unit volume to stretch the length by `1%` of a wire with cross sectional area of `1mm^2` will be. `[Y=9xx10^(11)(N)/(m^2)`]A. `9xx10^11J`B. `4.5xx10^7J`C. `9xx10^7J`D. `4.5xx10^11J`
The radii of the two columne is U-tube are `r_(1)` and `r_(2)(gtr_(1))`. When a liquid of density `rho` (angle of contact is `0^@))` is filled in it, the level different of liquid in two arms is h. The surface tension of liquid is `(g=` acceleration due to gravity)A. `(rho gh r_(1)r_(2))/(2(r_(2) - r_(1)))`B. `(rho gh (r_(2) - r_(1)))/(2r_(1) r_(2))`C. `(2 (r_(2) - r_(1)))/(rho gh r_(1) r_(2))`D. `(rho gh)/(2(r_(2) - r_(1)))`
A long glass capillary (radius R) is taken out of liquid (surface tension S and density `rho`) in vertical position. Angle of contact everywhere is zero. Atmospheric pressure is `P_(0)`. It is observed that the capillary retains some liquid. The length of liquid column retained in the capillary isA. `(3 S)/(rho Rg)`B. `(2S)/(rho Rg)`C. `(4S)/(rho Rg)`D. zero
A long glass capillary (radius R) is taken out of liquid (surface tension S and density `rho`) in vertical position. Angle of contact everywhere is zero. Atmospheric pressure is `P_(0)`. It is observed that the capillary retains some liquid. The radius of curvature of meniscus at the bottom of tube isA. BB. `oo`C. `R//2`D. `R//3`
A capillary tube of radius r is lowered into a liquid of surface tension T and density `rho`. Given angle of contact `=0^(@)`. What is the potential energy acquired by the liquid in the capillary?A. `(pi T^(2))/(2 rho g)`B. `T^(2)/(2 rho g)`C. `T^(2)/(rho g)`D. `(2 pi T^(2))/(rho g)`
A capillary tube of radius r is lowered into a liquid of surface tension T and density `rho`. Given angle of contact `=0^(@)`. The work done by surface tension will beA. `(pi T^(2))/(rho g)`B. `(4 pi T^(2))/(rho g)`C. `(T^(2))/(rho g)`D. `(2T^(2))/(rho g)`
A cylinder of mass m and density `rho` hanging from a string is lowered into a vessel of cross-section area s containing a liquid of density `sigma (lt rho)` unit it is fully immersed. The increase in pressure at the bottom of the vessel isA. `(m rho g)/(sigma s)`B. `(mg)/(s)`C. `(m sigma g)/(rho s)`D. zero

The strain stress curves of three wires of different materials are shown in the figure. P, Q and R are the elastic limits of the wires. The figure shown thatA. Elasticity of wire P is maximumB. Elasticity of wire Q is maximumC. Tensile strength of R is maximumD. None of the above is true.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment