Which of the following statements is incorrect? The sensitivity of a galvanometer which incorporates an optical lever arrangement may be increased by providing
A
a larger number of turns in the coil
B
a thinner suspension with a small torsional control
C
a special alloy permanent magnet which gives a high magnetic flux
D
all of the above
E
a light source with a greater intensity
Verified Correct Answer: E.
Physical Principles & Numerical Solution
A light source with a greater intensity. While it can improve visibility, it does not affect the sensitivity of the galvanometer
Source: Myschool Past Questions Archive (Record #29191)