Q:

Optical fiber works on the principle of

A) Scattering	B) interference
C) total internal reflection	D) refraction

Answer & Explanation Answer: C) total internal reflection

Explanation:

Optical_fiber_works_on_the_principle_of1556277954.jpg image

Optical fiber works on the principle of total internal reflection.

The Total Internal Reflection is the phenomenon in which the complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle.

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40 17308

Q:

Vikramshila Mahavihara was established by the ruler of

A) Pushyabhuti Dynasty	B) Barman Dynasty
C) Sen Dynasty	D) Pala Dynasty

Answer & Explanation Answer: D) Pala Dynasty

Explanation:

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Filed Under: Indian History

41 17302

Q:

What has a spine but no bones?

A) Mirror	B) Book
C) Table	D) None of the above

Answer & Explanation Answer: B) Book

Explanation:

A book has a spine to hold all the pages, but it has no bones.

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42 17287

Q:

Computer software can be defined as

A) the interaction between the computer and its database	B) an interface between the computer and the network
C) the computer and its associated equipment	D) the instructions that tell the computer what to do

Answer & Explanation Answer: D) the instructions that tell the computer what to do

Explanation:

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Q:

The largest fresh water lake in India is

A) Pulicat Lake	B) Veeranam Lake
C) Chilka Lake	D) Kolleru Lake

Answer & Explanation Answer: D) Kolleru Lake

Explanation:

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Q:

The discovery of neutron became very late because

A) it is present in nucleus	B) it is a fundamental particle
C) it does not move	D) it does not carry any charge

Answer & Explanation Answer: D) it does not carry any charge

Explanation:

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Filed Under: Chemistry

63 17223

Q:

What is the output of this C code?

        #include <stdio.h>
        void main()
        {
            int x = 97;
            char y = x;
            printf("%cn", y);
        }

A) a	B) 97
C) Run time error	D) None

Answer & Explanation Answer: A) a

Explanation:

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Q:

Find the Missing Numbers in the given Number Puzzle ?

A) 169 & 81	B) 67 & 121
C) 64 & 115	D) 70 & 110

Answer & Explanation Answer: A) 169 & 81

Explanation:

Observe that in each column, square of sum of digits in the first row = Respective second row elements.

In the same way, square of sum of digits in the second row = Respective third row elements.

=> ${(6 + 4)}^{2} = 10^{2} = 100$

=> ${(4 + 9)}^{2} = 13^{2} = 169$

=> ${(8 + 1)}^{2} = 9^{2} = 81$ .

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