- Laser Eating Diode
- Laser Emitting Direction
- Light Emitting Diode
- Light Exit Direction
- c
-
A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it.
First LED was invented in 1907 by H.J Round and Oleg Losev.
Police Department
All Police Department Solved Current & Past Papers are included in this section of ETEST Website. All Police Department MCQs are solved with detailed answers.
If the average arithmetic mean of 8,12,15,21, X and 11 is 17 then what is X?
- 25
- 30
- 35
- 38
- c
-
A.M = Arithmetic Mean
A.M = 17 Total Figures =06
A.M = (8+12+15+21+ X + 11) / 06
17 = (8+12+15 + 21+ X + 11) / 06
17 = (67 + X) / 6
17*6=67 + X
102 = 67 + X
102-67 = X
35 = X
Ali can type at a speed of 25 words per minute. How many words can he type in one hour?
- 1500
- 2000
- 2500
- 3000
- a
-
One Hour = 60 Minutes
One Minutes typing Speed = 25 WPM
60 Minutes WPM = 25*60=1500 WPM
If Jack needs 2.5 prints of cream to make a desert. How many prints will he need to make 3 desserts?
- 2.5
- 7.5
- 3.5
- 5.5
- b
-
One Desert = 2.5 Prints
03 Deserts Prints = 3*2.5=7.5
What is name of autobiography of Adolf Hitler?
- Das Kapital
- Mein Kampf
- Third Reich
- Hope and Success
- b
-
The writer of this book was Adolf Hitler.
This book is based on autobiography of Adolf Hitler.
Mein Kampf was published in 1925 first time.
Complete the series : 1,1,8,4,27,9,……..
- 24
- 36
- 64
- 75
- c
-
1,2,3,4,5
1,1,8,4,27,9,…..
13,12,23,22,33,32,43,42,53,52,….
1,1,8,4,27,9,64,16,125,25,…..
Thomas Jefferson was the ….President of the United States.
- 1st
- 2nd
- 3rd
- 4th
- c
-
He served as 3rd President of USA from 1801 to 1809.
Thomas Jefferson was founder of American Political Party.
In Power Point, The selected design template can be applied:
- To view the slides
- To current slide only
- To all the new presentation you create
- All of the above
- d
Solve the following : (25*10) / (5(6-4)2) = ?
- 200
- 50
- 25/2
- 25
- c
-
(25*10) / (5(6-4)2) = ?
250 / (5(2)2)
250 / 5*2*2
250 / 20
25/2
A hockey team won 06 games and lost 8. What is the ratio of winning Games?
- 6:6
- 3:7
- 5:5
- 3:3
- b
-
Winning Games = 6
Lost Games = 8
Total Games = 6+8=14
Ratio of Winning Games = Winning Games :Total Games
Ratio of Winning Games = 06:14 = 3:7