Questions

Q:

Which of the following are advantage of CD-ROM as a storage media?

A) CD-ROM is an inexpensive way to store large amount of data and information B) CD-ROM disks retrieve data and information more quickly than magnetic disks do
C) CD-ROMS make less errors than magnetic media D) All of these
 
Answer & Explanation Answer: A) CD-ROM is an inexpensive way to store large amount of data and information

Explanation:
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Q:

6 B in an O?

Answer

The given letter equation 6 B in an O refers to 6 Balls in an Over.

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Q:

Select the antonym of

amenable

A) responsive B) pliable
C) docile D) unsusceptible
 
Answer & Explanation Answer: D) unsusceptible

Explanation:
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Q:

What loses its head every morning and gets it back every night?

A) Pillow B) Candle
C) Moon D) Light
 
Answer & Explanation Answer: A) Pillow

Explanation:
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Q:

What will be output when you will execute following c code?

#include <stdio.h>
void main()

{
     switch(2)

      {
            case 1L:printf("No");
            case 2L:printf("%s","I");
              goto Love;
            case 3L:printf("Please");
            case 4L:Love:printf("Hi");
     }
}

A) I B) IPleaseHi
C) IHi D) Compilation error
 
Answer & Explanation Answer: C) IHi

Explanation:

It is possible to write label of goto statement in the case of switch case statement.

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Q:

Mirage is an example of

A) Reflection of light & Refraction of light B) Dispersion of light
C) Total Internal Reflection D) Refraction of light & Total Internal Reflection of light
 
Answer & Explanation Answer: D) Refraction of light & Total Internal Reflection of light

Explanation:

A Mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky.




      • It is caused due to Total internal Reflection.

 

      • It is an optical illusion observed in deserts or hot summer days due to which a person sees a pond of water some distance ahead of him in which the surrounding objects appear inverted.

Mirage_is_an_example_of1556276063.jpg image


How Mirage Forms::

 

1. The temperature of other layers of atmosphere goes on decreasing as we go up.
2. Therefore density and refractive index of air changes as one goes up.
3. Thus a ray of light,gets refracted more and more away from the normal.
4. At a particular angle when a ray of light exceeds critical angle, total internal reflection takes place and ray of light gets reflected in the same medium.
5. when the reflected ray reaches our eye, it appears as coming from tree or sky .
6. Hence the inverted image of tree creates an impression from a pond of water.

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Q:

Find the potential energy gained by a body of mass 60 kg, if it is raised by 12 m. (use g = 10 m/s2)

 

A) 7200 B) 50
C) 3600 D) 25
 
Answer & Explanation Answer: A) 7200

Explanation:
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Q:

void main()

{

char good *better, *best;

printf( "%d..%d", sizeof(better), sizeof(best) );

}

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

Explanation:

The second pointer is of char type and not a good pointer.

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