Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 1)
1.
An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon?
Answer: Option
Explanation:
| Angle traced by the hour hand in 6 hours = |  |
360 | x 6 |  |
° | = 180°. |
| 12 |
Discussion:
95 comments Page 8 of 10.
Shan said:
1 decade ago
1 hour = 30 deg.
So, 8-2 = 6 hr.
6*30 = 180 deg.
So, 8-2 = 6 hr.
6*30 = 180 deg.
Manoj said:
1 decade ago
Min hand take 60 min for complete 360 degree.
So 1 min = 360/60.
1 min = 6 degree.
Hour hand take 12 hours to complete 360 degree.
So 1 min = 360/ (60*12).
1 min = 0.5 degree.
So 8'o clk - 2'o clk = 6 hrs,
1 hour = 0.5*60 = 30 degree.
So 6 hour = 6*30 = 180 degree.
So 1 min = 360/60.
1 min = 6 degree.
Hour hand take 12 hours to complete 360 degree.
So 1 min = 360/ (60*12).
1 min = 0.5 degree.
So 8'o clk - 2'o clk = 6 hrs,
1 hour = 0.5*60 = 30 degree.
So 6 hour = 6*30 = 180 degree.
Cheenu said:
1 decade ago
How to apply theta = 30h-(11/2)m in this question.
Can we apply those in every question?
Can we apply those in every question?
Jyoti said:
1 decade ago
Thnks rishi your explanation is very easy.
Priyanka Prasad said:
1 decade ago
5min = 30dg (degree).
1min = 6dg.
If min 6 dg = hr 1/2 dg.
So angle between hr and min hand is 6*30 = 180dg.
Now from 12, hr hand is shifted and we have to call that shift.
So from 12, min hand is 25 min.
So 25*1/2 = 17.5dg.
Now 180+17.5dg = 197.5dg.
1min = 6dg.
If min 6 dg = hr 1/2 dg.
So angle between hr and min hand is 6*30 = 180dg.
Now from 12, hr hand is shifted and we have to call that shift.
So from 12, min hand is 25 min.
So 25*1/2 = 17.5dg.
Now 180+17.5dg = 197.5dg.
Sandesh said:
1 decade ago
1hr = 30 degree.
6hrs degree = 30*6 = 180.
6hrs degree = 30*6 = 180.
Lavanya said:
1 decade ago
Hi guys,
I don't know proper rules & how to calculate ?
Please tel me any solutions about clocks problems.
I don't know proper rules & how to calculate ?
Please tel me any solutions about clocks problems.
Prerna167 said:
1 decade ago
Hey rishi can you explain that how 1hr = 30 degree.
Rupa said:
1 decade ago
No Rishi. this solution is not good for all problems.
because just think when we have to find angle between 1'o clock and 3'o clock which angle you will consider?
1-3 or 3-1 ?
if 1 to 3 the angle is 60 degrees
if 3 to 1 the angle is 300 degrees
Am I right?
because just think when we have to find angle between 1'o clock and 3'o clock which angle you will consider?
1-3 or 3-1 ?
if 1 to 3 the angle is 60 degrees
if 3 to 1 the angle is 300 degrees
Am I right?
Vani said:
1 decade ago
Rishi had given very good explanation.
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