How Many Seconds in a Day ? : āĻāĻāĻž āĻĻāĻŋāĻ¨āĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§ ?
How Many Seconds in a Day ? (āĻāĻāĻž āĻĻāĻŋāĻ¨āĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§ ?)
Ans (āĻāĻ¤ā§āĻ¤ā§°): 1 day = 86,400 seconds (ā§§ āĻĻāĻŋāĻ¨ = ā§Žā§Ŧ,ā§Ēā§Ļā§Ļ āĻā§āĻā§āĻŖā§āĻĄ)
Calculation (āĻāĻŖāĻ¨āĻž)
- 1 minute = 60 seconds (ā§§ āĻŽāĻŋāĻ¨āĻŋāĻ = ā§Ŧā§Ļ āĻā§āĻā§āĻŖā§āĻĄ)
- 1 hour = 60 minutes (ā§§ āĻāĻŖā§āĻāĻž = ā§Ŧā§Ļ āĻŽāĻŋāĻ¨āĻŋāĻ)
- 1 day = 24 hours (ā§§ āĻĻāĻŋāĻ¨ = ā§¨ā§Ē āĻāĻŖā§āĻāĻž)
Therefore (āĻ¸ā§ā§ā§āĻšā§), 24 × 60 × 60 = 86,400 seconds : ā§¨ā§Ē × ā§Ŧā§Ļ × ā§Ŧā§Ļ = ā§Žā§Ŧ,ā§Ēā§Ļā§Ļ āĻā§āĻā§āĻŖā§āĻĄ
Formula (āĻ¸ā§āĻ¤ā§ā§°) : Seconds in a Day = Hours × Minutes × Seconds (āĻĻāĻŋāĻ¨ā§° āĻā§āĻā§āĻŖā§āĻĄ = āĻāĻŖā§āĻāĻž × āĻŽāĻŋāĻ¨āĻŋāĻ × āĻā§āĻā§āĻŖā§āĻĄ)
= 24 × 60 × 60 = 86,400 seconds
Example (āĻāĻĻāĻžāĻšā§°āĻŖ)
A full day from midnight to midnight contains 86,400 seconds. (āĻŽāĻžāĻāĻ¨āĻŋāĻļāĻžā§° āĻĒā§°āĻž āĻĒā§°ā§ąā§°ā§āĻ¤ā§ āĻŽāĻžāĻāĻ¨āĻŋāĻļāĻžāĻ˛ā§ āĻāĻāĻž āĻ¸āĻŽā§āĻĒā§ā§°ā§āĻŖ āĻĻāĻŋāĻ¨āĻ¤ ā§Žā§Ŧ,ā§Ēā§Ļā§Ļ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§āĨ¤)
Memory Trick (āĻŽāĻ¨āĻ¤ ā§°āĻāĻžā§° āĻ¸āĻšāĻ āĻā§ā§°āĻŋāĻ)
Remember: 24 → 60 → 60
24 hours in a day
60 minutes in an hour
60 seconds in a minute
24 × 60 × 60 = 86,400
Units of Time (āĻ¸āĻŽā§ā§° āĻāĻāĻ)
- Second (āĻā§āĻā§āĻŖā§āĻĄ): Small unit of time. (āĻ¸āĻŽā§ā§° āĻ¸ā§°ā§ āĻāĻāĻāĨ¤)
- Minute (āĻŽāĻŋāĻ¨āĻŋāĻ): 60 seconds. (ā§Ŧā§Ļ āĻā§āĻā§āĻŖā§āĻĄāĨ¤)
- Hour (āĻāĻŖā§āĻāĻž): 60 minutes. (ā§Ŧā§Ļ āĻŽāĻŋāĻ¨āĻŋāĻāĨ¤)
- Day (āĻĻāĻŋāĻ¨): 24 hours. (ā§¨ā§Ē āĻāĻŖā§āĻāĻžāĨ¤
MCQs on Time Measurement (āĻ¸āĻŽā§ā§° āĻĒā§°āĻŋāĻŽāĻžāĻĒ) (Board & Competitive Exam Pattern)
1. How many seconds are there in one day ? āĻāĻāĻž āĻĻāĻŋāĻ¨āĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§?
(a) 8,640 (b) 86,400 (c) 864,000 (d) 8,400
Ans: (b) 86,400
Explanation: 1 day = 24 × 60 × 60 = 86,400 seconds. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§§ āĻĻāĻŋāĻ¨ = ā§¨ā§Ē × ā§Ŧā§Ļ × ā§Ŧā§Ļ = ā§Žā§Ŧ,ā§Ēā§Ļā§Ļ āĻā§āĻā§āĻŖā§āĻĄāĨ¤
2. How many seconds are there in one day ? (ā§§ āĻĻāĻŋāĻ¨āĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§ ?)
(a) 8,640 (b) 86,400 (c) 864,000 (d) 8,400
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) 86,400
Explanation: 24 × 60 × 60 = 86,400 seconds. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž : ā§¨ā§Ē × ā§Ŧā§Ļ × ā§Ŧā§Ļ = ā§Žā§Ŧ,ā§Ēā§Ļā§Ļ āĻā§āĻā§āĻŖā§āĻĄāĨ¤
3. How many minutes are there in one hour ? (ā§§ āĻāĻŖā§āĻāĻžāĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻŽāĻŋāĻ¨āĻŋāĻ āĻĨāĻžāĻā§ ?)
(a) 24 (b) 100 (c) 60 (d) 30
Ans / āĻāĻ¤ā§āĻ¤ā§°: (c) 60
Explanation: 1 hour = 60 minutes. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§§ āĻāĻŖā§āĻāĻž = ā§Ŧā§Ļ āĻŽāĻŋāĻ¨āĻŋāĻāĨ¤
4. How many seconds are there in one minute ? (ā§§ āĻŽāĻŋāĻ¨āĻŋāĻāĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§ ?)
(a) 100 (b) 60 (c) 30 (d) 24
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) 60
Explanation: 1 minute contains 60 seconds. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§§ āĻŽāĻŋāĻ¨āĻŋāĻāĻ¤ ā§Ŧā§Ļ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§āĨ¤
5. How many hours are there in one day ? (ā§§ āĻĻāĻŋāĻ¨āĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻāĻŖā§āĻāĻž āĻĨāĻžāĻā§ ?)
(a) 12 (b) 48 (c) 60 (d) 24
Ans / āĻāĻ¤ā§āĻ¤ā§°: (d) 24
Explanation: A day has 24 hours. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻāĻāĻž āĻĻāĻŋāĻ¨āĻ¤ ā§¨ā§Ē āĻāĻŖā§āĻāĻž āĻĨāĻžāĻā§āĨ¤
6. How many minutes are there in one day ? (ā§§ āĻĻāĻŋāĻ¨āĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻŽāĻŋāĻ¨āĻŋāĻ āĻĨāĻžāĻā§ ?)
(a) 1,440 (b) 144 (c) 2,400 (d) 240
Ans / āĻāĻ¤ā§āĻ¤ā§°: (a) 1,440
Explanation: 24 × 60 = 1,440 minutes. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§¨ā§Ē × ā§Ŧā§Ļ = ā§§,ā§Ēā§Ēā§Ļ āĻŽāĻŋāĻ¨āĻŋāĻāĨ¤
7. How many seconds are there in two hours ? ā§¨ āĻāĻŖā§āĻāĻžāĻ¤ āĻāĻŋāĻŽāĻžāĻ¨ āĻā§āĻā§āĻŖā§āĻĄ āĻĨāĻžāĻā§ ?
(a) 3,600 (b) 7,200 (c) 72,000 (d) 720
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) 7,200
Explanation: 2 × 60 × 60 = 7,200 seconds. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§¨ × ā§Ŧā§Ļ × ā§Ŧā§Ļ = ā§,ā§¨ā§Ļā§Ļ āĻā§āĻā§āĻŖā§āĻĄāĨ¤
8. Which is the smallest unit of time among these ? āĻ¤āĻ˛ā§° āĻā§āĻ¨āĻā§ āĻ¸āĻŽā§ā§° āĻāĻāĻžāĻāĻ¤āĻā§ āĻ¸ā§°ā§ āĻāĻāĻ ?
(a) Day (b) Hour (c) Minute (d) Second
Ans / āĻāĻ¤ā§āĻ¤ā§°: (d) Second
Explanation: Second is smaller than minute, hour, and day. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻā§āĻŖā§āĻĄ, āĻŽāĻŋāĻ¨āĻŋāĻ, āĻāĻŖā§āĻāĻž āĻā§°ā§ āĻĻāĻŋāĻ¨āĻ¤āĻā§ āĻ¸ā§°ā§ āĻāĻāĻāĨ¤
9. 3 days are equal to how many hours ? ā§Š āĻĻāĻŋāĻ¨ = āĻāĻŋāĻŽāĻžāĻ¨ āĻāĻŖā§āĻāĻž ?
(a) 24 (b) 48 (c) 72 (d) 96
Ans / āĻāĻ¤ā§āĻ¤ā§°: (c) 72
Explanation: 3 × 24 = 72 hours. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§Š × ā§¨ā§Ē = ā§ā§¨ āĻāĻŖā§āĻāĻžāĨ¤
10. 120 seconds is equal to: ā§§ā§¨ā§Ļ āĻā§āĻā§āĻŖā§āĻĄ = ?
(a) 1 minute (b) 2 minutes (c) 3 minutes (d) 4 minutes
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) 2 minutes
Explanation: 120 ÷ 60 = 2 minutes. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: ā§§ā§¨ā§Ļ ÷ ā§Ŧā§Ļ = ā§¨ āĻŽāĻŋāĻ¨āĻŋāĻāĨ¤
11. Which operation is used to find seconds in a day ? āĻāĻāĻž āĻĻāĻŋāĻ¨ā§° āĻā§āĻā§āĻŖā§āĻĄ āĻāĻŖāĻ¨āĻž āĻā§°āĻŋāĻŦāĻ˛ā§ āĻā§āĻ¨āĻā§ āĻāĻŖāĻ¨āĻž āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻā§°āĻž āĻšā§ ?
(a) 24 + 60 + 60 (b) 24 × 60 × 60 (c) 24 × 60 (d) 60 × 60
Ans / āĻāĻ¤ā§āĻ¤ā§°: (b) 24 × 60 × 60
Explanation: Seconds in a day = 24 hours × 60 minutes × 60 seconds.
āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻĻāĻŋāĻ¨ā§° āĻā§āĻā§āĻŖā§āĻĄ = ā§¨ā§Ē āĻāĻŖā§āĻāĻž × ā§Ŧā§Ļ āĻŽāĻŋāĻ¨āĻŋāĻ × ā§Ŧā§Ļ āĻā§āĻā§āĻŖā§āĻĄāĨ¤