Question

If we consider the angle made between the hour hand and minute hand, which of the following make a right angle ? (Consider hour hand as base)

• A.
  06:00
• B.
  04:05
• C.
  09:30
• D.
  12:00

Answer 1

Answer: (B), (C)

The correct options are
B
04:05
C

09:30
(i) 06:00

The angle formed here is 180${}^{\circ }$ . So it is a straight angle not right angle.

(ii) 04:05
The angle formed here is 90${}^{\circ }$. So it is a right angle.

(iii) 09:30
The angle formed here is 90${}^{\circ }$. So it is a right angle.

(iv) 12:00
The angle formed here is 360${}^{\circ }$. So it is a complete angle.