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CLOCKS (IMAGES)

Image Based


  1. Mirror image Based : The image of an object when seen in a mirror is called its mirror reflection or mirror image. 

  • Right side of the clock shows as mirror reflection left side of clock and vice-versa.

   Case 1 : If there is a time between 00:01 to 11:59; 

   Method : Subtract from 11:60

   Case 2 :  If there is a time between 12:01 to 23:59; 

   Method : Subtract from 23:60

   Case 3 : To find out exact time as hour

   Method : Subtract from 12

 

FOOD FOR THOUGHT : AM and PM has no effect on the calculation of the Question.  


Examples : 

Q 1 . What is the mirror image of 8 O'clock ?

  1. 5 O'clock 

  2. 4  O'clock 

  3. 4: 01 

  4. 4 : 59

Sol : Mirror image of 4 O'clock = 12 - 8 = 4 O'clock


Q 2. What is the mirror image of  18 O'clock ?

  1. 5 O'clock

  2. 4 O'clock

  3. 6 O'clock

  4. 7 O'clock

Sol : Mirror image of 18 O'clock= 24 - 18 = 6 O'clock [ Here,  18 O'clock = 6 O'clock ]

Q 3. What is the mirror image of  14 : 00 ?

  1.  9 : 00

  2. 10 : 00

  3. 11 : 00

  4.  2 : 00

Sol: Mirror image of 14 : 00 = 23 : 60 - 14 : 00 = 09 : 60 = 10 : 00 


Q. 4. What is the mirror image for 8:20 ?

  1. 4:40

  2. 3:40

  3. 5: 40

  4. None of these

Sol :  Mirror image of 8:20 = 11:60 - 8:20 = 3:40

Note : Usually aspirants make the mistake by marking the answer 4:40 by using their imagination which will lead to make the answer incorrect.

TIPS FOR  THE TOPIC : Never use imagination while solving these. Always go by formula. This trick is limitless and applicable to all type of questions.


Q 5. What is the mirror image for 11:55 ?

  1. 01:05

  2. 00:55

  3. 00:05

  4. 01:00

Sol : Mirror Image of 11:55 = 11:60 - 11:55 = 00:05


Q. 6. What is the mirror image for 20:15 ?

  1. 03 : 34

  2. 04 : 45

  3. 03 : 45

  4. 04 : 15

Sol : Mirror Image for 20 : 15 = 23 : 60 - 20 : 45 = 03 : 15


Q 7. What is the mirror image of 10 : 20 ?

  1. 14 : 40

  2. 02 : 20

  3. 01 : 40

  4. 02 : 40

Sol : Mirror image of 10 : 20 = 11 : 60 - 10 : 20 = 01 : 40


Q. 8. What is the mirror image for  3:25   5/7 ?

  1. 7: 34 3/7

  2. 8 : 34 2/7

  3. 7 : 43 3/7

  4. 8 : 43 2/7

Sol : Mirror Image for 3  : 25  5/7 = 

             11 : 60            = 11 : 59 + 1  =      11 : 59  + 7/7

           -  03 : 25  5/7                         =     -  3 : 25  + 5/7  


                                                        =         8 : 34  + 2/7


Q 9.  What is the mirror image for  10 :23 2/3 ?

a. 01: 36 1/3

b. 01 : 24 2/3

c. 01 : 23 1/3

d. 01 : 33 1/3

Sol : Mirror Image for 10  : 23  2/3 = 

             11 : 60            = 11 : 59 + 1  =      11 : 59  + 3/3

           -  10 : 23  2/3                         =     -  10 : 23  + 2/3  


                                                        =         01 : 36  + ⅓


Q.10. What is the mirror image for 7:46 : 4/11?

  1. 4: 1 : 34/11

  2. 5: 4 : 31/11

  3. 4 : 13 : 7/11

  4. 5 : 13 : 7/11

Sol: Mirror image for 7 : 46 : 4/11  or 7: 510/11 = 11:60 - 7:510/11 = 4 : 150/11 = 4:13 : 7/11.


2. Water image Based : Water image is just a reflection where the top and bottom part of the images changed where the left and right side of the image remain the same. 

  • In water images, the image that forms is not too perfect as a mirror image. 

Rules to solve :  Subtract the value of  time from 18 : 30 , either the answer is deducted value

or 1 hour less than that. 

FOOD FOR THOUGHT : AM and PM has no effect on the calculation of the Question.  

EXAMPLE :

Q 1. What is the water image of 8 : 20 ?

  1. 10 : 30

  2. 10 : 20

  3. 10 : 10

  4. 09 : 10

Sol : Water image of 8 : 20 = 18 : 30 - 8 : 20 = 10 : 10. 

TIPS FOR THE TOPIC : Either the answer is 10 : 10 or 09 : 10. Sometimes in options, the option which

is provided, is actually not the deducted value. Therefore, in that case the

answer with value which is 1 hour less deems fit. 

Q 2. What is the water image of 1 : 30 ?

  1. 04 : 00

  2. 14 : 00

  3. 04 : 30

  4. 05 : 30

Sol : Water image of 1 : 30 = 18 : 30 - 1 : 30 = 17 : 00 = 5 : 00

But, 5 : 00 is not given in the options. Hence, the correct answer would be

1 hour less than the value calculated i.e. 04 : 00.

Q 3. What is the water image of 01 : 50 ?

  1. 04 : 40

  2. 03 : 40

  3. 04 : 50

  4. None of these

Sol : Water image of 01 : 50 = 18 : 30 - 01 : 50  = 16 : 40 = 04 : 40      

[HINT : 18 : 30 = 17 : 90]

Q 4. What is the water image for 06 : 30 ?

  1. 12 : 30

  2. 11 : 30

  3. 11 : 00

  4. 12 : 00

Sol : Water image of 06 : 30 = 18 : 30 - 06 : 30 = 12 : 00

Q 5. What is the water image of 20 : 42 ?

  1. 08 : 48

  2. 07 : 42

  3. 08 : 32

  4. 02 : 12

Sol : Water image of 20 : 42 = 17 : 90 - 08 : 42 = 09 : 48   

[ Hint: 20 : 42 = 12 : 00 + 08 : 42]

Q 6. What is the water image of 5 : 00 ?

  1. 02 : 00

  2. 01 : 00

  3. 01: 30

  4. 02 : 30

Sol : Water image of 05 : 00 = 18 : 30 - 05 : 00 = 13 : 30  = 01 : 30

Q 7. What is the water image of 3 : 20 ?

OR, How does the water image of 3 : 20 is 3 : 10 ?

  1. 02 : 10

  2. 03 : 10

  3. 01: 30

  4. 02 : 30

Sol : Water image of 03 : 20 = 18 : 30 - 03 : 20 = 15 : 10  = 03 : 10

Ask me in the comment section, if you face any problem while solving clock aptitude questions. Visit next page for more clock problems.

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