Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 8)
8.
The angle between the minute hand and the hour hand of a clock when the time is 4.20, is:
Answer: Option
Explanation:
| Angle traced by hour hand in | 13 | hrs = |  |
360 | x | 13 |  |
° | = 130°. |
| 3 | 12 | 3 |
| Angle traced by min. hand in 20 min. = | |
360 | x 20 | |
° | = 120°. |
| 60 |
Required angle = (130 - 120)° = 10°.
Discussion:
79 comments Page 3 of 8.
Anuranan said:
7 years ago
It very simple.
1 Hour cover =30 °
So, 60 minutes cover 30 °.
1 minutes cover 30/60 -_1/2 °.
20 minutes cover 20 (1/2) °.
Equal to 10 °.
1 Hour cover =30 °
So, 60 minutes cover 30 °.
1 minutes cover 30/60 -_1/2 °.
20 minutes cover 20 (1/2) °.
Equal to 10 °.
(2)
Mohan said:
1 decade ago
To find angle take this formula.
Angle= ( (11/2) *min-30*hour).
If we get angle value as negative take that value as positive. That will be the answer.
Angle= ( (11/2) *min-30*hour).
If we get angle value as negative take that value as positive. That will be the answer.
Lakshmi said:
1 decade ago
As we know 12 hrs = 360 deg.
i.e, deg's between hr to hr is 30 deg.
1 hr = 60 min.
We want degree for only 20 min.
20 min = 10 deg.
40 min = 20 deg.
i.e, deg's between hr to hr is 30 deg.
1 hr = 60 min.
We want degree for only 20 min.
20 min = 10 deg.
40 min = 20 deg.
Anil said:
4 years ago
For 1 min the Hr hand moves 0.5,
So, the angle between Hr and Min hand is =0,
Since Min Hand moves 20 mins. We have 20*0.5=10.
Therefore 0 + 10 = 10.
So, the angle between Hr and Min hand is =0,
Since Min Hand moves 20 mins. We have 20*0.5=10.
Therefore 0 + 10 = 10.
(5)
Punithavathi said:
9 years ago
The shortcut formula to find angle b/w two hands.
1/2[60H - 11M] where H is hour, M min.
If result is above 180 then subtract the answer from 360.
1/2[60H - 11M] where H is hour, M min.
If result is above 180 then subtract the answer from 360.
Prasant said:
1 decade ago
60 parts by min hand = 5 parts by hr hand.
20 parts by min hand = (5/60) *20 = 1 2/3 part by hr hand.
1 part = 6 degree.
1 2/3 part = 10 degree.
20 parts by min hand = (5/60) *20 = 1 2/3 part by hr hand.
1 part = 6 degree.
1 2/3 part = 10 degree.
Shashank said:
1 decade ago
@Greeshma.
Angle between 2 hands at 6:00.
MIN (M) = 0.
HOUR (H) = 6.
Formula is (|11M-60H|) /2.
So, {|11(0)-60(6)|}/2 = 180.
That's it :-).
Angle between 2 hands at 6:00.
MIN (M) = 0.
HOUR (H) = 6.
Formula is (|11M-60H|) /2.
So, {|11(0)-60(6)|}/2 = 180.
That's it :-).
Satya prakash singh said:
10 years ago
This formula does not provide solution for all problems.
Ex. 11:43.
= 60*11 - 11*43/2.
= 187/2 = 93.5.
Which is not appropriate angle.
Ex. 11:43.
= 60*11 - 11*43/2.
= 187/2 = 93.5.
Which is not appropriate angle.
Navya said:
1 decade ago
In the above someone said apply direct formula that is: 11M - 60H/2.
Can this formula be applicable to all problems guys.
Explain please.
Can this formula be applicable to all problems guys.
Explain please.
Snow said:
11 months ago
For 1 minute = 0.25 degree.
For 60 minutes = 15 degrees.
Then, for 20 minutes = 20 * 0.25 = 5 degrees.
Then, 15 - 5 = 10 degrees.
For 60 minutes = 15 degrees.
Then, for 20 minutes = 20 * 0.25 = 5 degrees.
Then, 15 - 5 = 10 degrees.
(2)
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