Question

Assertion :$\beta$-particles are deflected less than $\alpha$-particles in electrical field. Reason: $\beta$-particles have very low mass.

• A. $A$ is correct but $R$ is wrong
• B. $A$ is wrong but $R$ is correct
• C. Both $A$ and $R$ are correct and $R$ is correct explanation of $A$
• D. Both $A$ and $R$ are correct but $R$ is not correct explanation of $A$

Answer 1

The correct option is B $A$ is wrong but $R$ is correct

particles have unit negative charge. hence, in an electrical field, they are deflected towards anode.
On the other hand, particles are positively charged.
Hence, they are deflected towards cathode.
Hence, A is wrong but R is correct.