Which of the following statements about distance and displacement is not correct?
Displacement is a vector quantity
Distance has dimension
Displacement is measured in meters
Distance is a vector quantity
Correct answer is D
No explanation has been provided for this answer.
The electrons in a cathode-ray tube are produced by?
heating a metal filament.
ionization of the air
applying a magnetic field to the y-plates.
applying an electric field to the x-plates
Correct answer is A
No explanation has been provided for this answer.
Which of the following statements is not a characteristic of a plane progressive wave?
Energy travels out through the medium
Neighboring points along the profile possess different amplitudes
Neighboring points along the profile possess the same amplitude
Neighboring particles vibrate with different phase
Correct answer is B
No explanation has been provided for this answer.
2s
4s
5s
1s
Correct answer is A
No explanation has been provided for this answer.