Q. A nail is driven into the trunk of a 30 years old tree at a point 1 m above the soil level. The tree grows in height at the rate of 0.5m a years. After three years, nail will be
A) 1 m above the soil
B) 1.5 m above the soil
C) 2 m above the soil
D) 2.5 m above the soil
Explanation
After three years, the nail will be one metre above the soil because plants show only apical growth. Only tip of tree will grow, lower part of tree will remain constant.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.