1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

For a constant hydraulic stress on an object, the fractional change in the object's volume $$\left( {{{\Delta V} \over V}} \right)$$ and its bulk modulus B are related as

A
$${{\Delta V} \over V} \propto B$$
B
$${{\Delta V} \over V} \propto {B^2}$$
C
$${{\Delta V} \over V} \propto {1 \over B}$$
D
$${{\Delta V} \over V} \propto {1 \over {{B^2}}}$$
2
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

A long cylindrical iron core of cross-sectional area 5 cm2 is inserted into a long solenoid having 4000 turns/meter and carrying a current 5 A. The magnetic field inside the core is $$\pi$$ T. Find the pole strength developed.

A
1000 A-m
B
1240 A-m
C
882 A-m
D
760 A-m
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