MCQ
In plotting stress versus strain curves for two materials $P$ and $Q$, a student by mistake puts strain on the $y$-axis and stress on the $x$-axis as shown in the figure. Then the correct statement$(s)$ is(are)

$(A)$ $P$ has more tensile strength than $Q$

$(B)$ $P$ is more ductile than $Q$

$(C)$ $P$ is more brittle than $Q$

$(D)$ The Young's modulus of $P$ is more than that of $Q$

  • $(A,B)$
  • B
    $(A,C)$
  • C
    $(B,C)$
  • D
    $(B,D)$

Answer

Correct option: A.
$(A,B)$
a
$Y=\frac{\text { stress }}{\text { strain }}$

$\Rightarrow \frac{1}{Y}=\frac{\text { strain }}{\text { stress }} \Rightarrow \frac{1}{Y_P}>\frac{1}{Y_\theta} \Rightarrow Y_P$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A bullet of mass $5 \,g$ is shot from a gun of mass $5 \,kg$. The muzzle velocity of the bullet is $500\, m/s$. The recoil velocity of the gun is ........... $m/s$
An observer moves towards a stationary source of sound with a speed $1/5^{th}$ of the speed of sound. The wavelength and frequency of the source emitted are $\lambda $ and $f$ respectively. The apparent frequency and wavelength recorded by the observer are respectively
The process in which no heat enters or leaves the system is termed as
Microscopic domain includes:
A smooth wire of length $2\pi r$ is bent into a circle and kept in a vertical plane. A bead can slide smoothly on the wire. When the circle is rotating with angular speed $\omega$ about the vertical diameter $AB$, as shown in figure, the bead is at rest with respect to the circular ring at position $P$ as shown. Then the value of $\omega^2$ is equal to
A bus moving along a straight highway with speed of $72 \mathrm{~km} / \mathrm{h}$ is brought to halt within $4 \mathrm{~s}$ after applying the brakes. The distance travelled by the bus during this time (Assume the retardation is uniform) is__________.$\mathrm{m}$.
Dimensions of gravitational constant are:
Match List$-I$ with List$-II.$

  List$-I$   List$-II$
$(a)$ Magnetic Induction $(i)$ ${ML}^{2} {T}^{-2} {A}^{-1}$
$(b)$ Magnetic Flux $(ii)$ ${M}^{0} {L}^{-1} {A}$
$(c)$ Magnetic Permeability $(iii)$ ${MT}^{-2} {A}^{-1}$
$(d)$ Magnetization $(iv)$ ${MLT}^{-2} {A}^{-2}$

Choose the most appropriate answer from the options given below:

The international space station is maintained in a nearly circular orbit with a mean altitude of $330 \,km$ and a maximum of $410 \,km$. An astronaut is floating in the space station's cabin. The acceleration of astronaut as measured from the earth is
If the radius of a star is $R$ and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is $Q$?

($\sigma$ stands for Stefan's constant)