Question

The Deflection Sensitivity of a Cathode Ray Tube is

• A. Directly proportional to the defleciton voltage
• B. Directly proportional to the square of the deflection voltage
• C. Inversely proportional to the deflection voltage
• D. Independent of the deflection voltage

Answer 1

The correct option is D Independent of the deflection voltage

Deflection
$D=\frac{L{l}_d{V}_y}{2d{V}_a}$
Where,
$V_y\to Deflectionvoltage$

$V_a\to Anodevoltage$

Now, Deflection sensitivity
$S=\frac{D}{V_y}=\frac{L{l}_d}{2d{V}_a}$
which is independent to deflection voltages.