Question

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Answer 1

Answer:

I ) P = - charge

Q = - charge

R = + charge

S = - charge

II ) When a glass rod is rubbed with silk, glass rod loses electrons and silk gains electrons. Glass rod becomes positively charged and silk becomes negatively charged.

BEST OF LUCK FOR YOUR EXAM DUDE !

Answer 2

Answer:

1. p repels Q and R so,charges of p,Q,R must be sam
2. s attracts Q mean that tgey both have opposite charges.And T has no charge
3.  A negatively charged rod attracts P ball means p charge must be positive.

Based on the 3 observation we can conclude that charges of

P-only positive

Q-positive or negative

R-positive or negative

s-only negative(as it attracts P)

Explanation:

When the glass rod is rubbed with silk clothes, glass quickly loses electrons, and silk takes electrons out of the glass rod. So after rubbing, the glass rod becomes positively charged and the silk gets negative charge.