Physics-Physical Quantities
NEET Physics Physical Quantities MCQ Question
Type: MCQ-diagram based-Easy-Class 11
Consider a diagram showing a pendulum in motion. The time period T of the pendulum is given by the formula T = 2π√(l/g). Which of the following statements about the constant 'k' in the formula is correct?
A
The constant 'k' can be derived using dimensional analysis.
B
The constant 'k' is dimensionless and cannot be derived using dimensional analysis.
C
The constant 'k' depends on the mass of the pendulum.
D
The constant 'k' changes with the length of the pendulum.
Correct Answer
Option B
Detailed Explanation
The NCERT context states that dimensionless constants like 'k' cannot be obtained by the method of dimensions, indicating it is dimensionless and not derivable by dimensional analysis.
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