Question

an
000
as
39. Two bulbs Bi and B.
B2
B2 are connected in
series with
AC
source of emf 200 V,
shown.
KV, * V₂
The
labels on the bulbs
read 200 V-60 W
200V
and 200 V-100 W
respectively. Calculate the ratio of: (i) the resistances
of the bulbs (R/R), (ii) the power being consumed
when connected in series (P1/P2), (iii) the PD across
the bulbs (V1/V2).
(ISC 2003)
Ans. (i) 5:3, (ii) 5:3, (iii) 5:3.​

Answer 1

Answer:

A lot consists of 48 mobile phones of which 42 are good, 3 have only minor defects and 3 have major defect

Varnika will buy a phone if it is good but the trader will only buy a mobile if it has no major defect. One phone is

selected at random from the lot. What is the probability that it is (i) acceptable to varnika ? (ii) acceptable to the

trader