Answer:
The answer is the 1st one
<span>a subatomic particle of a type including the baryons and mesons that can take part in the strong interaction</span>
The de-Broglie wavelength of an electron when an electron is moving perpendicular to magnetic field will be same.
<h3>What is wavelength?</h3>
The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.
The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.
Hence,the de-Broglie wavelength of an electron when an electron is moving perpendicular to magnetic field will be same.
To learn more about the wavelength refer to the link;
brainly.com/question/7143261
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Answer:
Since the momentum of the body remains constant ( conserved) the trolley slows down (its velocity reduces) since its mass increases.