Question

Q.3)
Which of these particles bears no charge and
mass? (1 marks )
Ans.
Beta particles
Gama particles
Both alpha and beta
Alpha particles
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Answer 1

Answer:

Both alpha and beta particles bears no charge and mass.

Answer 2

Gama particles bear no mass and charge.

Alpha, beta and gamma particles are all radioactive particles emitted by unstable atoms in order to attain stability.

• Alpha particles are positively charged with 2 neutrons and 2 protons. so their mass is 4 and carry a positive charge of 2.
• Beta particles are emitted from nucleus. They have single negative charge and very neglible mass equal to half of one thousandth of mass of a proton.
• Gamma particles carry no charge and mass and have high penetrating power.

so among all the given options, option 2 Gamma particles is the right answer since they carry no charge and mass.