Correct answer
D. 30 minutes
Explanation
The correct answer is 30 minutes.
The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as________?
Which of the following timbers is suitable for making sports goods?
Due to battering action of wheels over the end of the rails, the rails get bent down and are deflected at ends. These rails are called________?
Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the center of slab bearing where x is equal to________?
Whenever an activity has zero total float, then________?
Time factor for a clay layer is________?