Questions

Q:

A periscope works by the principle of

A) Total internal reflection B) Refraction
C) Diffraction D) Reflection & Refraction
 
Answer & Explanation Answer: A) Total internal reflection

Explanation:

A periscope is an optical instrument that uses a system of prisms, lenses, or mirrors to reflect images through a tube.

 

 per11526634345.jpg image

 

Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer’s eye.

 

Hence, A periscope works by the principle of Total internal reflection.

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Filed Under: Physics
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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Q:

Missing Slot Covers on a Computer can cause

A) Power Surges B) Incomplete Path of ESD
C) Over Haeat D) EMI
 
Answer & Explanation Answer: C) Over Haeat

Explanation:

The slot covers on a computer reduce the dust build up inside the computer. So the slot covers should be present in proper place.The missing covers can disrupt the airflow design of the case and cause overheating problems.

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Filed Under: Computer
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Q:

Which of the following is the MOST SIMILAR in meaning to the given word?

Aids

A) Amplifies B) Assists
C)  Expands D)  Borrows
 
Answer & Explanation Answer: B) Assists

Explanation:

“To aid” means to give financial or material help. So, option 2 is the best-fit answer. Amplify- increase

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Filed Under: English

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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives.

 


It was a bittersweet moment for me when I found out that I had been selected for the Sakura Science Exchange programme, a Robotics and IoT workshop in Japan. A fully-funded opportunity of a lifetime. Fly off to Saitama without a care on the world, and all I had to do was put into practice what I love to do – computer science. The bitter part of the episode – that I would lose two weeks of IB education, an almost literal mountain to cover when I got back – was quickly forgotten when I envisioned myself programming robots in the country that gave us Anime and sushi! It was with the eagerness to have an extended vacation in an un-visited land, and the opportunity to learn more about a subject that I am passionate about, that I headed to the Kempegowda International Airport outside Bengaluru. Little did I know this would be the experience of a lifetime, more for the endearing values of the Japanese culture that made their mark on me than anything else. The first feature of Japanese society that called out to me was the Discipline. Walking into the Narita International Airport, used as I was to the noisy crowds back in India, I quite literally lost my breath to the sight that awaited me. Be it the security check or baggage claim, somehow there was a silence that felt right. Everyone went about their activities without any confusion. And, contrary to the bharatiya custom of lazy pot-bellied officials, every guard and all counter personnel did what they were supposed to do to ensure this flow was maintained.

 

Which country is credited for producing Anime?

 

A) India B) Japan
C) China D) USA
 
Answer & Explanation Answer: B) Japan

Explanation:
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Filed Under: English
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Q:

Rihand Valley Project is located in the state of

A) Uttar Pradesh B) Bihar
C) Orissa D) Madhya Pradesh
 
Answer & Explanation Answer: A) Uttar Pradesh

Explanation:

It is a scheme across the river Rihand near Pipri in Mirzapur district of Uttar Pradesh

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Filed Under: Indian Geography

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Q:

Two cubes have their volumes in the ratio 1 : 27. Find the ratio of their surface areas.

A) 2:9 B) 3:9
C) 1:9 D) 4:9
 
Answer & Explanation Answer: C) 1:9

Explanation:

Let their edges be a and b. Then,

 

a3/b3 = 1/27 (or) (a/b)3 = (1/3)3 (or) (a/b) = (1/3).

 

\Ratio of their surface area = 6a2/6b2 = a2/b2 = (a/b)2 = 1/9, i.e. 1:9.

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Q:

Logical puzzle

Miss Anne has eleven kids in her class. She has a bowl containing eleven apples. Now Miss Anne want to divide the eleven apples to the kids, in such a way that a apple should remain in her bowl. How can Miss Anne do it?

Answer

Ten kids will get each one apple. The eleventh kid will get the apple with the bowl.

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Subject: Logic Puzzles

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Q:

This refers to the ordering of elements in a sentence

 

A) phrases B) syntax
C) disorder D) disorganisation
 
Answer & Explanation Answer: B) syntax

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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