Questions

Q:

Which color has the highest frequency?

A) Violet B) Red
C) Indigo D) Green
 
Answer & Explanation Answer: A) Violet

Explanation:

In VIBGYOR. It has colors ordered from highest to lowest frequency.

 

              Violet > Indigo > Blue > Green > Yellow > Orange > Red

 

That says Violet has the highest frequency.

We know, Speed of light = Frequency x Wavelength

=> As frequeny is inversely proportional to wavelength i.e, as frequwncy goes high wavelength goes down.

 

So, the violet color has the highest frequency.

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

The ability to do work is called Energy.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Yes, the ability to do work is called Energy is True.

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Subject: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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4 3099
Q:

Which of the following properties is found only in ferromagnetic materials ?

A) Susceptibility independent of temperature B) Point in a particular direction
C) Hysteresis D) Attracting a magnetic substance
 
Answer & Explanation Answer: C) Hysteresis

Explanation:
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Filed Under: Physics
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Q:

Which of the following is / are fund managers for National Pension System (NPS) in 2017 ?

A) Axis provident fund B) Yes bank pension fund
C) ICICI prudential pension D) Punjab National provident fund
 
Answer & Explanation Answer: C) ICICI prudential pension

Explanation:

At present in 2017, there are only seven NPS fund managers viz. HDFC Pension Fund, ICICI Prudential Pension, Kotak Pension Fund, LIC Pension Fund,  Reliance Capital Pension, SBI Pension Fund and UTI Retirement Solutions.

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Q:

Describe the Buddy system of memory allocation.

Answer

Free memory is maintained in linked lists, each of equal sized blocks. Any such block is of size 2^k. When some memory is required by a process, the block size of next higher order is chosen, and broken into two. Note that the two such pieces differ in address only in their kth bit. Such pieces are called buddies. When any used block is freed, the OS checks to see if its buddy is also free. If so, it is rejoined, and put into the original free-block linked-list.

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Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

13 x 8 + 25 - 6 ÷ 10 = 20

A) ÷ and - B) x and -
C) + and ÷ D) - and +
 
Answer & Explanation Answer: B) x and -

Explanation:
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Q:

Pelagic deposits consists of _____

A) Terrigenous materials B) Cosmic materials
C) Inorganic materials D) Organic ooze materials
 
Answer & Explanation Answer: D) Organic ooze materials

Explanation:
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Filed Under: World Geography

4 3098
Q:

Which of the following is the tallest animal?

A) Giraffe B) Camal
C) Ostrich D) None
 
Answer & Explanation Answer: A) Giraffe

Explanation:
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