COMEDK · Physics · 2. Units and Dimensions
Dimensional formula for the universal gravitational constant \(G\) is
- A \(\left[\mathrm{M}^{-1} \mathrm{~L}^{2} \mathrm{~T}^{-2}\right]\)
- B \(\left[\mathrm{M}^{0} \mathrm{~L}^{0} \mathrm{~T}^{0}\right]\)
- C \(\left[\mathrm{M}^{-1} \mathrm{~L}^{3} \mathrm{~T}^{-2}\right]\)
- D \(\left[\mathrm{M}^{-1} \mathrm{~L}^{3} \mathrm{~T}^{-1}\right]\)
Answer & Solution
Correct Answer
(C) \(\left[\mathrm{M}^{-1} \mathrm{~L}^{3} \mathrm{~T}^{-2}\right]\)
Step-by-step Solution
Detailed explanation
According to Newton's law of gravitation, \[ F=\frac{G m_{1} m_{2}}{r^{2}} \] where, \(F\) = gravitational force between two bodies of masses \(m_{1}\) and \(m_{2}\), \(r=\) distance between the two masses and \(G=\) universal gravitational constant.…
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
- What is the dimensional formula for electric flux?COMEDK 2025 Medium
- Young's double slit experiment is first done in air and then in a medium of refractive index \(\mu\). If the 8th dark fringe in the medium lies where the 4th bright fringe is in air, then the value of \(\mu\) is:COMEDK 2025 Medium
- An ideal gas is taken via path \(A B C A\) as shown in figure.
The network done in the whole cycle isCOMEDK 2018 Easy - Two spherical planets \(P\) and \(Q\) have the same uniform density \(\rho\), and masses \(M_P\) and \(M_Q\) and surface areas \(A\) and \(4 A\) respectively. Another spherical planet R also has the same uniform density \(\rho\), and its mass is \(\mathrm{Mp}+\mathrm{MQ}\). The escape velocities from these planets isCOMEDK 2025 Medium
- A string vibrates with a frequency of \(200 \mathrm{~Hz}\). When its length is doubled and tension is altered, it begins to vibrate with a frequency of \(300 \mathrm{~Hz}\). The ratio of the new tension to the original tension isCOMEDK 2023 Medium
- The spectrum obtained from the chromosphere of the sun at the time of total solar eclipse isCOMEDK 2013 Medium
More PYQs from COMEDK
- In the group \(G=\{1,5,7,11\}\) under multiplication modulo 12, the solution of \(7^{-1} \underset{12}{\times}(x \underset{12}{12} 11)=5\) is \(x=\)COMEDK 2016 Hard
- The overlapping of orbitals in benzene is of the typeCOMEDK 2017 Medium
- Length of the subtangent at \((a, a)\) on the curve \(y^{2}=\frac{x^{2}}{2 a+x}\) is equal toCOMEDK 2012 Hard
- The value of the integral \(\int_{0}^{\pi / 2}\left(\sin ^{100} x-\cos ^{100} x\right) d x\) isCOMEDK 2020 Hard
- Two concentric circular coils, each having 10 turns with radii \(0.2 \mathrm{~m}\) and \(0.4 \mathrm{~m}\) carry currents \(0.2 \mathrm{~A}\) and \(0.3 \mathrm{~A}\) respectively in opposite directions. Magnetic field at the centre isCOMEDK 2016 Hard
- Arrange the compounds \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\) in the increasing order of their reactivity towards \(\mathrm{S_N}1\) reaction.
\(
\begin{aligned}
& \mathrm{A}=\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Cl} \\
& \mathrm{B}=\mathrm{C}_6 \mathrm{H}_5 \mathrm{Cl} \\
& \mathrm{C}=\mathrm{CH}_2=\mathrm{CH}-\mathrm{Cl} \\
& \mathrm{D}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{Cl}
\end{aligned}\)COMEDK 2024 Medium