Question:medium
A person observes that the full length of a train subtends an angle of $15^\circ$. If the distance between the train and the person is $3$ km, the length of the train, calculated using parallax method, in meters is
A person observes that the full length of a train subtends an angle of $15^\circ$. If the distance between the train and the person is $3$ km, the length of the train, calculated using parallax method, in meters is
Show Hint
For small angles, always use radians in formulas like $L = D\theta$. Unit consistency is very important.
Updated On: May 1, 2026
- $45$
- $45\pi$
- $250\pi$
- $250$
- $450$
Show Solution
The Correct Option is C
Solution and Explanation
Was this answer helpful?
0
Top Questions on Dimensional Analysis
- The dimensions of angular impulse is equal to :
- JEE Main - 2024
- Physics
- Dimensional Analysis
- The dimensional formula of angular impulse is :
- JEE Main - 2024
- Physics
- Dimensional Analysis
- The dimensions of \( (\mu \epsilon)^{-1} \), where \( \epsilon \) is permittivity and \( \mu \) is permeability of a medium, are:
- CBSE Class XII - 2025
- Physics
- Dimensional Analysis
- The dimensional formula of magnetic permeability \(\mu_0\) is:
- CBSE Class XII - 2025
- Physics
- Dimensional Analysis
- Want to practice more? Try solving extra ecology questions todayView All Questions
