Question

The electrons in a tv tube travel a distance of 0.2m at a constant speed in 10s What is their average speed

Answer 1

Initial velocity of the electrons is negligible  u = 0m/s

Final velocity of the electrons v = 5 × 10⁶ m/s

Distance travelled by the electrons,

s = 1 cm = 1 × 10⁻² m

∴ Acceleration, =a=v²-u²/2 S

⇒a=(5×10⁶)²-0²/2×1×10⁻³

=25×10¹²/2×10⁻²

⇒a=12.5×10¹⁴m/s²

So, force on the electrons, F = ma

⇒ F = 9.1 × 10⁻³¹ × 12.5 × 10⁻¹⁴

= 1.1 × 10⁻¹⁵ N

Answer 2

Answer:

Hc Verma I Solutions for Class 11 Science Physics Chapter 1 Introduction To Physics are provided here with simple step-by-step explanations. These solutions for Introduction To Physics are extremely popular among Class 11 Science students for Physics Introduction To Physics Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Hc Verma I Book of Class 11 Science Physics Chapter 1 are provided here for you for free. You will also love the ad-free experience on Meritnation’s Hc Verma I Solutions. All Hc Verma I Solutions for class Class 11 Science Physics are prepared by experts and are 100% accurate

Explanation:

i hope you understand