Question:
The physical quantity which has no units, is
The physical quantity which has no units, is
Updated On: Apr 5, 2025
- radius of curvature
- velocity of light
- focal length
- refractive index
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The refractive index is a dimensionless quantity and has no units. It is the ratio of the speed of light in a vacuum to the speed of light in a medium, and therefore, it is a pure number without any physical units
The correct option is (D): refractive index
Was this answer helpful?
0
0
Top Questions on Units and measurement
Figure 1 shows the configuration of main scale and Vernier scale before measurement. Fig. 2 shows the configuration corresponding to the measurement of diameter $ D $ of a tube. The measured value of $ D $ is:
- JEE Advanced - 2025
- Physics
- Units and measurement
- The number of significant figures in the measurement 0.00456 is:
- BITSAT - 2025
- Physics
- Units and measurement
- A voltmeter of resistance 1000 \( \Omega \) can measure up to 25 V. How will you convert it so that it can read up to 250 V?
- CBSE CLASS XII - 2025
- Physics
- Units and measurement
- The dimensional formula for RC is:
- CBSE CLASS XII - 2025
- Physics
- Units and measurement
- Length, breadth and thickness of a strip having a uniform cross section are measured to be $ 10.5 \, \text{cm}, 0.05 \, \text{mm} $, and $ 6.0 \, \mu\text{m} $, respectively. Which of the following option(s) give(s) the volume of the strip in $ \text{cm}^3 $ with correct significant figures:
- JEE Advanced - 2025
- Physics
- Units and measurement
View More Questions
Questions Asked in AP POLYCET exam
- Area of a sector of a circle with radius 4 cm and angle 30° is (use \( \pi = 3.14 \)):
- The solution of \( x - 2y = 0 \) and \( 3x + 4y - 20 = 0 \) is:
- AP POLYCET - 2025
- Linear Equations
- If assumed mean of a data is 47.5, \( \sum f_i d_i = 435 \) and \( \sum f_i = 30 \), then mean of that data is:
- AP POLYCET - 2025
- Arithmetic Mean
- The points \( (1,5), (2,3) \) and \( (-2, -11) \) form a:
- A prime number \( p \) divides \( a^2 \) where \( a \) is a positive integer, then
- AP POLYCET - 2025
- Prime and Composite Numbers
View More Questions