Correct answer
A. 25 cm
Explanation
25 cm is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Blood vessels are______________?
The dimensions of the coefficient of viscosity are_____________?
An artificial satellite revolves round the Earth in circular orbit, which quantity remains constant?
For normal adjustment, length of astronomical telescope is______________?
The number of beats produced per second is equal to____________________?
The metastable state for an atom in laser light is_____________?