Bissoy.com
Doctors Medicines MCQs Q&A

অপটিক্যাল ফাইবার (Optical fibre) হচ্ছে ----

অপটিক্যাল ফাইবার (Optical fibre) হচ্ছে ---- Correct Answer খুব সরু এবং নমনীয় কাচ তন্তুর আলোক নল

অপটিক্যাল ফাইবার হচ্ছে খুব সরু এবং নমনীয় কাচ তন্তুর আলোক নল। আলো বহনের কাজে এটি ব্যবহৃত হয়। যখন আলোক রশ্মি কাচ তন্তুর এক প্রান্ত দিয়ে প্রবশে করে, তখন তন্তুর দেয়ালে বারবার এর পূর্ণ অভ্যন্তরীণ প্রতিফলন ঘটে, যতক্ষণ না অপর প্রান্ত দিয়ে নির্গত হয়।

Related Questions

Consider the following statements.
1. Fibre optics is based on the principle of total internal reflection.
2. In an optical fibre communication system, power consumption is extremely low
3. Optical fibre communications are free from radio frequency interference.
4. In India, Reliance Group of Industries is engaged in the manufacture of the optical fibre.
Which of these statements are correct?
Low quality of jute fibre is attributed to
1. Discoloration of fibre
2. Very short fibre strands
3. Reduction of cellulose in fibre
4. Reduction of cell wall strength over-retting decreases the fibre quality due to
Select the correct answer:
অপটিক্যাল ফাইবার বাকা করলে লস হতে পারে বলে ফাইবার ক্যাবলের ভেতর কি দেওয়া থাকে?
SEA-ME-WE-4 এর অপর নাম – i. অপটিক্যাল ফাইবার ii. অপটিক্যাল ক্যাবল iii. সাবমেরিন ক্যাবল নিচের কোনটি সঠিক?
The 2018 Nobel Prize in Physics has been awarded in laser physics for the optical tweezers and their applications to biological systems for the method of generating high-intensity, ultra-short optical pulses. Which of the following verifies the given statement? I:  The 2018 Nobel Prize in Physics has been awarded in laser physics for the optical tweezers. II: The 2018 Nobel Prize in Physics has been awarded for applications of the optical tweezers to biological systems. III: The 2018 Nobel Prize in Physics has been awarded for the method of generating high-intensity, ultra-short optical pulses using the optical tweezers.
Which one of the following statement is/are incorrect with respect to fibre intake in animals? 1. Forage dry matter consumption should be near 2% of the body weight. 2. At least 21-25% acid detergent fibre should be in the total ration. 3. At least 28-30% neutral detergent fibre should be in the total ration. 4. Provide at least 3 Kg of fibre a day.
A glass fibre reinforced epoxy composite is made with 60 wt.% unidirectional continuous glass fibres. The elastic moduli of the glass fibre and the epoxy matrix are 72.5 and 2.4 GPa, respectively. What is the elastic modulus of this composite along the fibre direction, in GPa? The densities of glass fibre and epoxy are 2.58 g/cm3 and 1.14 g/cm3, respectively
কোনটি অপটিক্যাল ফাইবার ক্যাবলের সবচেয়ে ভিতরের উপাদান? (Which one is the innermost component of the optical fiber cable?
Some of the physical and functional advantages of optical fiber communication are mentioned here. Select the option which tells about the functional advantages of optical fiber communication. I. The transmission bandwidth of the fiber optic cables is higher than the metal cables. II. Since these cables are di-electric, no spark hazards are present. III. Fibre optic cables last longer than copper cables. IV. The amount of data transmission is higher in fiber optic cables. V. Fibre optic cables are immune to electromagnetic interference. VI. These are not affected by electrical noise.
The Government of India announced linking of Lakshadweep Islands with the mainland through Optical Fibre Cable link. Which of the following statements is/are true? 1. The submarine optical fibre cable link will connect 11 islands of Lakshadweep with Kochi in mainland India. 2. The project will be executed in PPP mode through a joint venture of BSNL and RIL.