JEE Mains · Physics · STD 11 - 10.1, thermonetry,thermal expansion and calorimetry
Water falls from a height of 200 m into a pool. Calculate the rise in temperature of the water assuming no heat dissipation from the water in the pool.
\(\left(\right.\)Take \(g=10 \mathrm{~m} / \mathrm{s}^2\), specific heat of water \(\left.=4200 \mathrm{~J} /(\mathrm{kg} \mathrm{K})\right)\)
- A 0.23 K
- B 0.36 K
- C 0.14 K
- D 0.48 K
Answer & Solution
Correct Answer
(D) 0.48 K
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{mgh}=\mathrm{ms} \Delta \mathrm{T} \\ & \Delta \mathrm{T}=\frac{\mathrm{gh}}{\mathrm{s}}=\frac{10 \times 200}{4200} \mathrm{~K}=\frac{10}{21} \mathrm{~K}\end{aligned}\)
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
- Three masses \(m_1 = 4\) kg, \(m_2 = 4\) kg and \(m_3 = 6\) kg are suspended from a fixed smooth frictionless pulley as shown in the figure below. The value of \(T_1/T_2\) is _____.
(take \(g = 10\) m/s\(^2\))
JEE Mains 2026 Hard - Which one is the correct option for the two different thermodynamic processes ?
JEE Mains 2021 Medium - Identify the physical quantity that cannot be measured using spherometer :JEE Mains 2024 Hard
- A radioactive element \({ }_{92}^{242} X\) emits two \(\alpha\)-particles, one electron and two positrons. The product nucleus is represented by \({ }_{ P }^{234} Y\). The value of \(P\) is \(..................\)JEE Mains 2023 Medium
- For extrinsic semiconductors; when doping level is increased;JEE Mains 2021 Medium
- The vernier scale used for measurement has a positive zero error of \(0.2\, mm\). If while taking a measurement it was noted that \('0'\) on the vernier scale lies between \(8.5\, cm\) and \(8.6\, cm\) vernier coincidence is \(6,\) then the correct value of measurement is ............. \(cm\). (least count \(=0.01\, cm )\)JEE Mains 2021 Medium
More PYQs from JEE Mains
- Let \(f: \mathbf{R} \rightarrow \mathbf{R}\) be a polynomial function of degree four having extreme values at \(x=4\) and \(x=5\).
If \(\lim _{x \rightarrow 0} \frac{f(x)}{x^2}=5\), then \(f(2)\) is equal to :JEE Mains 2025 Medium - The probability that a randomly chosen \(2 \times 2\) matrix with all the entries from the set of first \(10\) primes, is singular, is equal toJEE Mains 2022 Hard
- Let the position vectors of the vertices \(A, B\) and \(C\) of a tetrahedron \(A B C D\) be \(\hat{\mathbf{i}}+2 \hat{\mathbf{j}}+\hat{\mathbf{k}}, \hat{\mathbf{i}}+3 \hat{\mathbf{j}}-2 \hat{k}\) and \(2 \hat{i}+\hat{j}-\hat{k}\) respectively. The altitude from the vertex \(D\) to the opposite face \(A B C\) meets the median line segment through \(A\) of the triangle \(A B C\) at the point \(E\). If the length of \(A D\) is \(\frac{\sqrt{110}}{3}\) and the volume of the tetrahedron is \(\frac{\sqrt{805}}{6 \sqrt{2}}\), then the position vector of \(E\) isJEE Mains 2025 Hard
- The tangent and normal to the ellipse \(3x^2 + 5y^2 = 32\) at the point \(P(2, 2)\) meet the \(x-\) axis at \(Q\) and \(R,\) respectively. Then the area(in sq. units) of the triangle \(PQR\) isJEE Mains 2019 Hard
- Let \(l_{1}\) be the line in \(xy\)-plane with \(x\) and \(y\) intercepts \(\frac{1}{8}\) and \(\frac{1}{4 \sqrt{2}}\) respectively, and \(l_{2}\) be the line in \(zx\)-plane with \(x\) and \(z\) intercepts \(-\frac{1}{8}\) and \(-\frac{1}{6 \sqrt{3}}\) respectively. If \(d\) is the shortest distance between the line \(l_{1}\) and \(l_{2}\), then \(d ^{-2}\) is equal toJEE Mains 2022 Hard
- A system of three polarizers \(P_1, P_2, P_3\) is set up such that the pass axis of \(P_3\) is crossed with respect to that of \(P_1\). The pass axis of \(P_2\) is inclined at \(60^o\) to the pass axis of \(P_3\). When a beam of unpolarized light of intensity \(I_0\) is incident on \(P_1\), the intensity of light transmitted by the three polarizers is \(I\). The ratio \((I_0/I)\) equals (nearly)JEE Mains 2019 Hard