Question
Which of the following are used for accurately
measuring very small time intervals?Solution
Anatomicclockisaclockdevice thatusesanelectronictransitionfrequencyinthe microwave, optical, or ultraviolet region of the electromagnetic spectrum of atoms as a frequency standard for its timekeeping element. Atomic clocks are the most accurate time and frequency standards known, and are used as primary standards for international time distribution services, to control the wave frequencyoftelevisionbroadcasts,andinglobal navigation satellite systems such as GPS.
A boat can cover 70 km in still water and 72 km in downstream in 4 hours and 3 hours respectively. Find the time taken by the boat to cover 66 km upstre...
(78.03 + 116.98) ÷ 13.211 = 89.9 – 25.23% of ?
Find the simplified value of the given expression:
(5 + 13 of 7 - 5.25 of 8 + 63) Ă· 18
A group consists of 4 boys and 5 girls. In how many ways can a 5-member committee be formed that includes exactly 3 girls and 2 b...
Find the value of {(3125)(n/5) × 5(2n + 1)}/ {25n × 5(n - 1)} Â
P and Q together can complete a certain task in 45 days. P can finish the task alone in 75 days. How many days will it take for Q...
A car travels 120 km in 1 hour and then travels 80 km in 1.5 hours. What is the average speed of the car for the entire journey?
Akash marked a bag of chips at Rs.240 higher than its cost price. He sold it after applying two successive discounts of 10% and 2...
The sum of the interior angles of a polygon with n sides is 1800°. Find the value of n.