CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A 12 dial clock has its minute hand defective.Whenever it touches dial 12, it immediately falls down to 6 instead of running smoothly (the hour hand remains unaffected during that fall). It was set right at 12 'O' clock in the noon.
At the time half past three, the angle between hour and minute hands of the watch will be -

A
75o
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
60o
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
90o
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
105o
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 75o
The answer is option A
Speed of an hour hand =360(12×60)=0.5o/hr

At 3'O clock, the minute had would've fallen down to 6 and the hour hand would be in 3
In 30 mins, the minute hand would again move to 12 and fall down to 6
The distance covered by the hour hand in this 30 mins =30×0.5=15o
The hour hand has moved 15o from the number 3 on the clock, while the minute hand is on number 6 on the clock at 3:30
Angle between the hour and minute hand =9015=75o


flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Leaf
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon