Time and Clocks

It is a correct answer. Solution : In a correct clock, the minute hand gains 55 min, over the hour hand in 60 min. To be together again,the minute hand must gain 60 minutes over the hour hand. 55min are gained in = 720/11 min But they are together after 63 min. Therefore, Gain in 63 min = (720/11)-63 = 27/11 min. Gain in 24 hours = (27/11) * 60 * 24/63 = 540/77 min.

It is correct answer. Solution :

Converting all the time into 24hr format we get 6 a.m=6:00 , 12 noon = 12:00, 10 a.m = 10:00 and 7 p.m = 19:00

Required Time = 600+((1200-600)*(1900-600)/((1200-600)+(1900-1000))) = 600 + 520 = 11:20  ...............i.e 11:20 a.m

Indian Standard Time (IST) is UTC+5:30, which is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT/UTC). India uses a single time zone for the entire country despite its width. The half-hour offset comes from India's longitudinal position relative to the prime meridian.

The NOW() function in Excel returns the current date and time as a serial number, which can be formatted to display as a date/time value. It updates automatically whenever the worksheet is recalculated.

The TODAY() function returns the serial number of the current date, not a particular time. It returns only the date portion (without time), while NOW() returns both date and time.

The LCM of 7, 8, 11 and 12 is 1848. So, the bells will toll together after every 1848 seconds. In 1848 seconds, all four bells toll 1 time. In 3 hrs (3 x 60 x 60), i.e. 10800 seconds, they will toll 3 x 60 x 60/1848 times = 5.84 times. As it has to be an integral part, so the answer is 5.

LCM of 50 and 48 is 1200 seconds. 1200 seconds = 20 minutes So, they will beep again at 12:20 p.m.

CPU clock speed measures how many instruction cycles the processor can execute per second, measured in Hertz (Hz). Modern processors operate in gigahertz (GHz) range, meaning billions of cycles per second, which determines how quickly the CPU can process instructions.

Accidents must be reported within 24 hours to aviation authorities. An accident involves serious injury, death, or substantial aircraft damage. The shorter reporting window reflects the urgency and severity of accident situations compared to incidents.

According to the statement given in the question, this option is right.

The IST meridian at 82.5°E passes through Allahabad (near Mirzapur, Uttar Pradesh). It does not pass through Guntur (Andhra), Delhi, or Kolkata. The standard time is calculated from this meridian which serves as the reference for all of India.

The world is divided into 24 time zones, each approximately 15 degrees of longitude wide. Each zone differs from Greenwich Mean Time by one hour, covering the full 360 degrees of Earth's circumference.

Indian Standard Time (IST) is 5 hours 30 minutes ahead of Greenwich Mean Time (GMT). India uses a single time zone based on the 82.5°E longitude, which passes through Allahabad. This means when it's noon at GMT, it's 5:30 PM in India. Option C is wrong because it uses a negative sign, and options A and B have incorrect hour values.

Allahabad is at 82.5°E (IST = UTC+5:30), while London is at 0° (GMT = UTC+0 in winter). When it's 8 PM in Allahabad, London time is 8 PM - 5.5 hours = 2:30 PM. Note: During summer (BST), London would be 3:30 PM, but standard exam conventions assume winter time.