MCQ
Why the spring is made up of steel in comparison of copper
  • A
    Copper is more costly than steel
  • B
    Copper is more elastic than steel
  • Steel is more elastic than copper
  • D
    None of the above

Answer

Correct option: C.
Steel is more elastic than copper
c
(c) A spring will be better one, if a large restoring force is setup in it on being deformed, which in turm depends upon the elasticity of the material of the spring. since the Young's modulus of elastivity of steel is more than that of copper. Hence steel is prefferred in making the spring.

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

Which of the following pairs of physical quantities are not analogous to each other in case of translatory motion and rotational motion,
Two particles are projected from the same point with the same speed at different angles $\theta _1$ and $\theta _2$ to the horizontal. They have the same range. Their times of flight are $t_1$ and $t_2$ respectively.
A tank with a small hole at the bottom has been filled with water and kerosene (specific gravity $0.8$). The height of water is $3\,m$ and that of kerosene $2\,m$. When the hole is opened the velocity of fluid coming out from it is nearly ........ $ms^{-1}$ .(take $g\, = 10\, m s^{-2}$ and density of water $= 10^3\, kg\, m^{-3}$)
The curves for potential energy $(U)$ and kinetic energy $({E_k})$ of a two particle system are shown in figure. At what points the system will be bound?
The decimal equivalent of $\frac {1}{20} $ upto three significant figures is
On a solid sphere lying on a horizontal surface a force $F$ is applied at a height of $R/2$ from the centre of mass. The initial acceleration of a point at the top of the sphere is (there is no slipping at any point)
Which force can possibly act on a body moving in a straight line?
For a simple pendulum the graph between $L$ and $T$ will be.
A rectangles solid box of length $0.3\, m$ is held horizontally, with one of its sides on the edge of a platform of height $5\,m$. When released, it slips off the table in a very short time $= 0.01\, s$, remaining essentially horizontal. The angle by which it would rotate when it hits the ground will be (in radians) close to:
A vertical hanging bar of length $l$ and mass $m$ per unit length carries a load of mass $M$ at lower end, its upper end is clamped to a rigid support. The tensile stress a distance $x$ from support is $(A \rightarrow$ area of cross-section of bar)