AP EAMCET · PHYSICS · Waves and Sound
An earthquake generates both transverse \(S\) and longitudinal \(P\) waves in the earth with speeds \(4.5 \mathrm{~km} \mathrm{~s}^{-1}\) and \(8.0 \mathrm{~km} \mathrm{~s}^{-1}\), respectively. A seismograph records that the first \(P\)-wave arrives 3.5 minutes earlier than the first S-wave. From the seismograph, the epicentre of the earthquake is located at a distance.
- A \(1080 \mathrm{~km}\)
- B \(2468 \mathrm{~km}\)
- C \(2160 \mathrm{~km}\)
- D \(4320 \mathrm{~km}\)
Answer & Solution
Correct Answer
(C) \(2160 \mathrm{~km}\)
Step-by-step Solution
Detailed explanation
Let the distance of epicenter of earthquake from point of observation be \(d\). speed of \(S\)-wave, \(v_S=4.5 \mathrm{~km}^{-1} \mathrm{~s}\) speed of \(P\)-wave, \(v_P=8 \mathrm{~km}^{-1} \mathrm{~s}\) then, \(d=V_P t_P=V_S t_S\) or \(8 t_P=4.5 t_S\)…
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 straight conductor of length \(32 \mathrm{~cm}\) carries a current of \(30 \mathrm{~A}\). Magnetic induction at a point in air at a perpendicular distance of \(12 \mathrm{~cm}\) from the mid-point of the conductor isAP EAMCET 2018 Easy
- Energy needed in breaking a liquid drop of radius \(R\), into \(n\) smaller drops each of radius \(r\), is [T- Surface tension of the liquid]AP EAMCET 2022 Medium
- The distance between an object and its real image formed by a lens is ' \(\mathrm{D}\) '. If the magnification is ' \(m\) ', the focal length of the lens isAP EAMCET 2017 Easy
- The value of \(Y_1\) and \(Y_2\), respectively in the following logic circuit if both \(A\) and \(B\) are 1.
AP EAMCET 2019 Easy - Ball \(A\) of mass \(1 \mathrm{~kg}\) moving along a straight line with a velocity of \(4 \mathrm{~ms}^{-1}\) hits another ball \(B\) of mass \(3 \mathrm{~kg}\) which is at rest. After collision, they stick together and move with the same velocity along the same straight line. If the time of impact of the collision is \(0.1 \mathrm{~s}\) then the force exerted on \(B\) isAP EAMCET 2022 Hard
- Two bodies each of mass \(m\) are hung from a balance whose scale pans differ in a vertical height by \(h\). If the mean density of the earth is \(\rho\), the error in weighing isAP EAMCET 2019 Medium
More PYQs from AP EAMCET
- If \(\mathrm{A}(0,1,2), \mathrm{B}(2,-1,3)\) and \(\mathrm{C}(1,-3,1)\) are the vertices of a triangle, then the distance between its circumcentre and orthocentre isAP EAMCET 2025 Hard
- At \(T(\mathrm{~K})\), the equilibrium constant of \(\mathrm{H}_2(\mathrm{~g})+\mathrm{I}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{HI}(\mathrm{g})\) is 49 . If \(\left[\mathrm{H}_2\right],\left[\mathrm{I}_2\right]\) at equilibrium at the same temperature are \(2.0 \times 10^{-2} \mathrm{M}\) and \(8.0 \times 10^{-2} \mathrm{M}\) respectively, the [HI] at equilibrium in \(\mathrm{mol} \mathrm{L}^{-1}\) isAP EAMCET 2018 Medium
- \(A(-2,9)\) and \(B(1,6)\) are two points on the curve \(y=x^2+5\). The coordinates of the point \(\mathrm{C}\) on the curve such that the tangent drawn at \(\mathrm{A}\) is parallel to the chord \(\mathrm{BC}\), isAP EAMCET 2023 Easy
- The reagent used for the conversion of allyl alcohol to propenal isAP EAMCET 2018 Medium
- Let \(\mathbf{a}, \mathbf{b}\) and \(\mathbf{c}\) be three non-coplanar vectors and let \(\mathbf{p}, \mathbf{q}\) and \(\mathbf{r}\) be the vectors defined by \(\mathbf{p}=\frac{\mathbf{b} \times \mathbf{c}}{[\mathbf{a} \mathbf{b} \mathbf{c}]}, \mathbf{q}=\frac{\mathbf{c} \times \mathbf{a}}{[\mathbf{a} \mathbf{b} \mathbf{c}]}, \mathbf{r}=\frac{\mathbf{a} \times \mathbf{b}}{[\mathbf{a} \mathbf{b} \mathbf{c}]}\). Then, \((\mathbf{a}+\mathbf{b}) \cdot \mathbf{p}+(\mathbf{b}+\mathbf{c}) \cdot \mathbf{q}+(\mathbf{c}+\mathbf{a}) \cdot \mathbf{r}\) is equal toAP EAMCET 2012 Easy
- In Ellingham diagram, the plot is drawn betweenAP EAMCET 2018 Easy