AP EAMCET · PHYSICS · Gravitation
The distance through which one has to dig the earth from its surface so as to reach the point where the acceleration due to gravity is reduced by of that at the surface of the earth, is (radius of earth is )
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Acceleration due to gravity, gd=g1-dR ⇒gdg=1-dR ⇒1-40100=1-dR ⇒dR=40100 ⇒d=R40100=2560 km
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 parallel plate capacitor has a capacity \(80 \times 10^{-6} \mathrm{~F}\), when air is present between its plates. The space between the plates is filled with a dielectric slab of dielectric constant 20. The capacitor is now connected to a battery of \(30 \mathrm{~V}\) by wires. The dielectric slab is then removed. Then, the charge passing through the wire isAP EAMCET 2018 Hard
- An electron of charge \(e\) and mass \(m\) moving with an initial velocity \(v_0 \hat{\mathbf{i}}\) is subjected to all electric field \(E_0 \hat{\mathbf{j}}\). The de-Broglie wavelength of the electron at a time \(t\) is (Initial de-Broglie wavelength of the electron \(\left.=\lambda_0\right)\)AP EAMCET 2019 Hard
- If 2 moles of an ideal monoatomic gas at a temperature of \(27^{\circ} \mathrm{C}\) is mixed with 4 moles of another ideal monoatomic gas at a temperature of \(327^{\circ} \mathrm{C}\), then the temperature of mixture of the two gases isAP EAMCET 2025 Medium
- In \(n-p-n\) transistor circuit, the collector current is 10 mA . If \(95 \%\) of the electrons emitted reach the collector, then the base current is nearlyAP EAMCET 2024 Hard
- The frequency of a light ray is \(6 \times 10^{14} \mathrm{~Hz}\). Its frequency when it propagates in a medium of refractive index 1.5, will beAP EAMCET 2023 Easy
- A rectangular loop of length \(l\) and breadth \(b\) is placed at distance of \(x\) from infinitely long wire carrying current \(i\) such that the direction of current is parallel to breadth. If the loop moves away from the current wire in a direction perpendicular to it with a velocity \(v\), the magnitude of the emf in the loop is : ( \(\mu_0=\) permeability of free space \()\)AP EAMCET 2006 Hard
More PYQs from AP EAMCET
- Let \(a, b \in \mathbf{R}-\{0\}\), and \(I_2\) be the identity matrix of order 2. Then the rank of the (block) matrix \(\left[\begin{array}{ll}a I_2 & b_2 \\ a I_2 & b I_2\end{array}\right]\) isAP EAMCET 2020 Easy
- Two dice are thrown and the sum of the numbers appeared on the dice is noted. If \(A\) is the event of getting a prime number as their sum and \(B\) is the event of getting a number greater than 8 as their sum, then \(\mathrm{P}(\mathrm{A} \cap \overline{\mathrm{B}})=\)AP EAMCET 2025 Medium
- The time taken for half of the initial amount of \(\mathrm{N}_2 \mathrm{O}_5\) to decompose is \(12 \mathrm{~min}\) at \(310 \mathrm{~K}\) and \(2 \mathrm{hrs}\) at \(300 \mathrm{~K}\). The activation energy of reaction in \(\mathrm{kJ}\) is \(\left(\mathrm{R}=8.3 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right)\)AP EAMCET 2019 Easy
- \(\frac{1}{\sin 1^{\circ} \sin 2^{\circ}}+\frac{1}{\sin 2^{\circ} \sin 3^{\circ}}+\ldots\)
\(+\frac{1}{\sin 89^{\circ}+\sin 90^{\circ}}=\)AP EAMCET 2022 Medium - A steel wire can withstand a load up to \(2940 \mathrm{~N}\). A load of \(150 \mathrm{~kg}\) is suspended from a rigid support. The maximum angle through which the wire can be displaced from the mean position, so that the wire does not break when the load passes through the position of equilibrium, isAP EAMCET 2008 Medium
- If the product of the roots of is , then the value of isAP EAMCET 2021 Easy