KOHINOOR PUBLIC SCHOOL, HAWAPURI
NOTICE
INTER-HOUSE BOOK REVIEW COMPETITION
All students of Classes IX–XII are hereby informed that an Inter-House Book Review Competition will be organised on 30th June 2025 in the School Library from 11:00 a.m. onwards. Each house may nominate 2 participants. Interested students must register with the undersigned by 27th June.
Aruna / Arun
(Head Girl / Head Boy)
Two batteries of emf's \(3V \& 6V\) and internal resistances 0.2 Ω \(\&\) 0.4 Ω are connected in parallel. This combination is connected to a 4 Ω resistor. Find:
(i) the equivalent emf of the combination
(ii) the equivalent internal resistance of the combination
(iii) the current drawn from the combination
Four students of class XII are given a problem to solve independently. Their respective chances of solving the problem are: \[ \frac{1}{2},\quad \frac{1}{3},\quad \frac{2}{3},\quad \frac{1}{5} \] Find the probability that at most one of them will solve the problem.