Important Questions [12]
- an electron is accelerated through a potential difference of 5kv and enters a uniform magnetic field of 0.02 wb/m2 acting normal to the direction of electron motion. Determine radius of the path.
- An Electron Enters a Uniform Magnetic Field B=0.23x10-2 Wb/M2 at 450 Angle to B. Determine the Radius and Pitch of Helical Path. Assume Electron Speed to Be 3x107 M/S.
- ⦁ Determine the magnetic field required to bend a beam consisting of electrons of speed 3 × 107 m/s in a circle of radius 5 cm.
- An Electron is Accelerated Through a Potential Difference of 5 Kv and Enters a Uniform Magnetic Field of 0.02 Wb/M2 Acting Normal to the Direction of Electron Motion. Determine the Radius of Path.
- Derive Bethe’S Law for Electron Refraction.
- Explain the concept of electrostatic focusing in electron impacts.
- Write a note on electrostatic focusing.
- An electron is accelerated through a potential difference of 18 kV in a colour TV cathode ray tube. Calculate the kinetic energy and speed of electron.
- Explain construction and working of cathode ray tube.
- Draw the block diagram of cathode ray tube and briefly explain its parts.
- Explain How A.C Voltage and Its Frequency is Measured Using Cro.
- How is Lissajous Figures Used to Measure Unknown Frequency?
Concepts [17]
- Fundamentals of Electromagnetism
- Motion of Electron in Electric Field
- Motion of Electron in Magnetic Field
- Magnetic Deflection
- Motion of Electron in Crossed Field
- Velocity Selector
- Velocity Filter
- Electron Refraction
- Bethe’S Law
- Electrostatic Focusing
- Magnetostatic Focusing
- Cathode Ray Tube (Crt)
- Cathod Ray Oscilloscope (Cro)
- Application of Cro
- Voltage
- Frequency
- Phase Measurement
