Related Questions

Q.(1-4): Answer the questions on the basis of the information given below. * F,G and H are insurance companies , Q,R,S and T are private detectives .Each detective works for at least one of the insurance companies. * Q always works for F and at least one of the other companies. Some of the time G employs only one of these detectives,' the rest of the time it employs exactly two of them. *F and H each employ exactly two of these detectives all the time. If R works for H only, and if S works for G and H only, T works for--
A F only
B G only
C H only
D both F and G
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
Optical Fibre technology works on which of these principles of Physics?
A Bernoulli's Principle
B Newton's law of Motion
C Total internal reflection of Light
D Photoelectric effect
In a beam subjected to pure bending, the intensity of stress in any fibre is _________ the distance of the fibre from the neutral axis.
A Equal to
B Less than
C More than
D Directly proportional to
Whenever G employs only one detective, which of the following must be true? 1.R works for two insurance companies. 2. T works for G, 3. S works for two insurance companies
A 1 only
B 2 only
C 3 only
D 1 and 2 only
Which of the following does not cause losses in optical fibre cables?
A Stepped index operation
B Scattering
C Microbending
D Light absorption
অপটিক্যাল ফাইবার (Optical fibre) হচ্ছে ----
A খুব সরু এবং নমনীয় কাচ তন্তুর আলোক নল
B খুব সূক্ষ্ম সুপরিবাহী তামার তার তন্তু নল
C খুব সরু এসবেস্টোস ফাইবার নল
D সূক্ষ্ম প্লাস্টিক ঘটিত নল
Optical Fibre এ- আলো সাধারনত কিভাবে চলে?
A প্রতিফলন
B প্রতিসরণ
C পূর্ণ অভ্যন্তরীণ প্রতিফলন
D ব্যাতিচার
The green light only ever goes on when tank A is full and tank C isn't empty. The red light is always on unless either tank A isn't Full or tank B is empty. Given that the green light is on, we can conclude all of the following EXCEPT---
A Tank A cannot be empty
B The red light must be on
C Tank C cannot be empty
D we don't have enough information to determine whether tank B is empty or not
The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?
A 32%
B 40%
C 48%
D 60%

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