COMEDK · Physics · 9. Gravitation
The height at which the acceleration due to gravity becomes \(\dfrac{g}{16}\) (where, \(g=\) acceleration due to gravity on the surface of the earth) in terms of \(R\) is, if \(R\) is the radius of earth.
- A \(2 R\)
- B \(3 R\)
- C \(\sqrt{2} R\)
- D \(\sqrt{3} R\)
Answer & Solution
Correct Answer
(B) \(3 R\)
Step-by-step Solution
Detailed explanation
The acceleration due to gravity at a height \(h\) above the surface of the earth is given by the formula \(g_h = g \left( \dfrac{R}{R + h} \right)^2\), where \(g\) is the acceleration due to gravity at the surface and \(R\) is the radius of the earth. Given that…
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
- The truth table of a logic gate is given below
\begin{array}{cc|c}
\hline \multicolumn{2}{c|}{ Input } & Output \\
\hline \boldsymbol{A} & \boldsymbol{B} & \boldsymbol{Y} \\
\hline 0 & 0 & 1 \\
\hline 0 & 1 & 1 \\
\hline 1 & 0 & 1 \\
\hline 1 & 1 & 0 \\
\hline
\end{array}
The logic gate isCOMEDK 2015 Easy - A bullet of 0.02 kg moving with a speed of \(100 \mathrm{~ms}^{-1}\) hits a surface and comes to rest in 0.1 s What is the magnitude of the impulse of the force?COMEDK 2025 Easy
- The dimensional formula for specific resistance is:COMEDK 2026 Medium
- Two balls are thrown horizontally, one from the window of first floor which is \(3 \mathrm{~m}\) high from the ground and second from the second floor which is \(6 \mathrm{~m}\) high from the ground, of a multi storey building, with the same speed of \(6 \mathrm{~ms}^{-1}\). Calculate the distance that will separate the two balls when they hit the ground.COMEDK 2024 Medium
- The dimensional formula for inductance isCOMEDK 2019 Easy
- Two bodies of specific heats \(C_1\) and \(C_2\), having the same heat capacities are combined to form a single composite body. The specific heat capacity of the composite body isCOMEDK 2026 Medium
More PYQs from COMEDK
- If \(A=\left[\begin{array}{lll}2 & 1 & 3 \\ 3 & 1 & 2 \\ 1 & 2 & 3\end{array}\right]\) and I is an identity by matrix of order \(3 \times 3\) then \(A(\operatorname{adj} A)=\)COMEDK 2025 Medium
- If 2 and 3 are intercepts of a line \(L=0\), then the distance of \(L \equiv 0\) from the origin isCOMEDK 2022 Easy
- Identify the 2 chemical tests which is not answered by Glucose having an open chain structure
[A] Reaction with Schiff's reagent and with Sodium bisulphite
[B] Reaction with \(\mathrm{HCN}\) and with \(\mathrm{HI}\)
[C] Reaction with \(\mathrm{HNO}_3\) and with Acetic anhydride
[D] Reaction with aqueous Bromine and with HydroxylamineCOMEDK 2024 Medium - Identify the wrong description of the below figures.
COMEDK 2017 Hard - The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend uponCOMEDK 2018 Easy
- The relation \(R=\{(1,1),(2,2),(3,3)\}\) on the set \(\{1,2,3\}\) isCOMEDK 2025 Easy