AP EAMCET Engineering 21 Sep 2020 Shift 2 Paper

(a) Initial volume of cube =(10)3=1000cm3
V when cube is chopped along length then it will form cuboid in which length =6cm
breadth =10cm
height =10cm
Adsorption power ∝ more surface area ∝6cm ∝6×(10)2∝600cm2
Final surface area of the cuboid =2(l×b+b×h+h×l)
Area of cuboid =2(2×10+100+20) =280cm2
For final cuboid area =280×5=1400cm2
So, final adsorption power ∝1400cm2 ‌

‌ Final adsorption power ‌

‌ Initial adsorption power ‌

=‌

1400

600

=‌

14

6

=‌

7

3

=2.33 times