Correct answer
B. Plus two
Explanation
Plus two is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
The profile of aeroplane wing which lifts it up is called as_____________?
Crystals of a material can behave as_________________?
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?
Sound waves do not travel in vacuum because ___________________?
Average translational kinetic energy per molecule of an ideal gas is given by_____________?
In Compton scattering, the change in wavelength is maxed if_______________?