JEE Mains · Physics · STD 11- 8. mechanical properties of solids
Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\) Assertion \(A\): Steel is used in the construction of buildings and bridges. Reason \(R:\) Steel is more elastic and its elastic limit is high. In the light of above statements, choose the most appropriate answer from the options given below
- A Both \(A\) and \(R\) are correct but \(R\) is NOT the correct explanation of \(A\)
- B \(A\) is not correct but \(R\) is correct
- C Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
- D \(A\) is correct but \(R\) is not correct
Answer & Solution
Correct Answer
(C) Both \(A\) and \(R\) are correct and \(R\) is the correct explanation of \(A\)
Step-by-step Solution
Detailed explanation
Assertion A states that steel is used in the construction of buildings and bridges, which is true. Steel is a widely used material for construction due to its high strength, durability, and resistance to corrosion. Reason R states that steel is more elastic and has a higher…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A cyclist starts from the point \(P\) of a circular ground of radius \(2 \mathrm{~km}\) and travels along its circumference to the point \(\mathrm{S}\). The displacement of a cyclist is _______.
JEE Mains 2024 Hard - Given below are two statements: One is labelled as Assertion \((A)\) and the other is labelled as Reason \((R).\) Assertion \((A)\) : In an uniform magnetic field, speed and energy remains the same for a moving charged particle. Reason \((R)\) : Moving charged particle experiences magnetic force perpendicular to its direction of motion.JEE Mains 2022 Medium
- An electron moves through a uniform magnetic field \(\vec{B}=B_0 \hat{i}+2 B_0 \hat{j} T\). At a particular instant of time, the velocity of electron is \(\overrightarrow{\mathrm{u}}=3 \hat{i}+5 \hat{j} \mathrm{~m} / \mathrm{s}\). If the magnetic force acting on electron is \(\vec{F}=5 e\hat kN\), where \(e\) is the charge of electron, then the value of \(\mathrm{B}_0\) is _______\(\mathrm{T}\).JEE Mains 2024 Hard
- A bead \(P\) sliding on a frictionless semi-circular string \((A C B)\) and it is at point \(S\) at \(t =0\) and at this instant the horizontal component of its velocity is \(v\). Another bead \(Q\) of the same mass as \(P\) is ejected from point \(A\) at \(t =0\) along the horizontal string \(A B\), with the speed \(v\), friction between the beads and the respective strings may be neglected in both cases. Let \(t_p\) and \(t_Q\) be the respective times taken by beads \(P\) and \(Q\) to reach the point \(B\), then the relation between \(t_p\) and \(t_Q\) is
JEE Mains 2026 Hard - A transformer consisting of \(300\) turns in the primary and \(150\) turns in the secondary gives output power of \(2.2\, kW\). If the current in the secondary coils is \(10\, A\), then the input voltage and current in the primary coil areJEE Mains 2019 Medium
- A square Lamina OABC of length 10 cm is pivoted at 'O'. Forces act at Lamina as shown in figure. If Lamina remains stationary, then the magnitude of F is :
JEE Mains 2025 Medium
More PYQs from JEE Mains
- The electrostatic potential in a charged spherical region of radius \(r\) varies as \(V=a r^3+b\), where \(a\) and b are constants. The total charge in the sphere of unit radius is \(\alpha \times \pi a \in_0\). The value of \(\alpha\) is _________ .JEE Mains 2026 Medium
- The value of \(\lim\limits _{n \rightarrow \infty} 6 \tan \left\{\sum\limits_{r=1}^{n} \tan ^{-1}\left(\frac{1}{r^{2}+3 r+3}\right)\right\}\) is equal toJEE Mains 2022 Hard
- A charged particle going around in a circle can be considered to be a current loop. A particle of mass \(m\) carrying charge \(q\) is moving in a plane with speed \(v\) under the influence of magnetic field \(\overrightarrow{ B }\). The magnetic moment of this moving particleJEE Mains 2020 Hard
- A cell of internal resistance \(r\) drives current through an external resistance \(R\) . The power delivered by the cell to the external resistance will be maximum when:JEE Mains 2019 Medium
- A line passing through the point \(A(9,0)\) makes an angle of \(30^{\circ}\) with the positive direction of \(\mathrm{x}\)-axis. If this line is rotated about \(A\) through an angle of \(15^{\circ}\) in the clockwise direction, then its equation in the new position isJEE Mains 2024 Medium
- A circle in inscribed in an equilateral triangle of side of length \(12\). If the area and perimeter of any square inscribed in this circle are \(\mathrm{m}\) and \(\mathrm{n}\), respectively, then \(m+n^2\) is equal toJEE Mains 2024 Hard