Which of the following statements is/are true? (A) Fibre optic cables are…
2022
Which of the following statements is/are true?
(A) Fibre optic cables are wooden fibres to provide high quality transmission.
(B) Wireless communication provides anytime, anywhere connection to both computers and telephones.
(C) Mobile phones are capable of providing voice communication and also digital messaging service.
Choose the correct answer from the options given below:
- A.
(A) and (C) only
- B.
(B) and (C) only
- C.
(A) and (B) only
- D.
(C) only
Show answer & explanation
Correct answer: B
Concept
To judge such "which statement is true" items, test each statement against the definition of the technology it names. A statement is true only if every factual claim inside it matches the established definition; a single wrong attribute (e.g. the material a medium is made of) makes the whole statement false.
Application
Evaluating each statement on its own merits:
Fibre optic cables are made of ultra-pure glass (silica, SiO₂) or plastic through which light pulses travel — they are not made of wooden fibres. This statement is false.
Wireless communication uses radio/microwave links rather than physical cables, so it can connect computers and telephones anytime, anywhere within coverage. This statement is true.
Mobile phones carry both voice calls and digital messaging (SMS/text and data messaging). This statement is true.
Cross-check
Only the two statements about wireless connectivity and mobile voice-plus-messaging survive the definition test, while the fibre-optic claim fails on its material. Hence the pair "(B) and (C) only" is the correct combination.