Home
Class 12
PHYSICS
A counter rate - meter is used to measur...

A counter rate - meter is used to measure the activity of a given sample. At one instant, the meter show 4750 counts per minute. Five minutes later it shows 2700 counts per minute. The half-life of the sample is nearly ______ minute `[log_(10)^(1.760)=0.2455]`

A

15 min

B

10 min

C

3 min

D

6 min

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE PRACTICE SHEET (ADVANCED) More than one correct answer Type Questions|5 Videos

  • NUCLEAR PHYSICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE PRACTICE SHEET (ADVANCED) Linked Comprehension Type Questions Passage-I :|2 Videos

  • NUCLEAR PHYSICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE LEVEL-II (LECTURE SHEET (ADVANCED)) Integer Type Questions )|3 Videos

  • MOVING CHARGES AND MAGNETISM

    AAKASH SERIES|Exercise EXERCISE-III|45 Videos

  • NUCLEI

    AAKASH SERIES|Exercise Practice Exercise|40 Videos

Similar Questions

Explore conceptually related problems

At a given instant the legs of a right angled triangle are 8 inch and 6 inch respectively. The first leg decreases at 1 inch per minute and second increases at 2 inch per minute. The rate of increasing of the area after 2 minute is

A certain sample of a radioactive material decays at the rate of 500 per second at a certain time. The count rate falls to 200 per second after 50 minutes. (a) What is the decay constant of the sample ? (b) What is its half-life?

Water is being poured in to the inverted conical vessel at the rate of 1.5 cubic meter per minute. Its depth is always equal to twice its radius. The level of water is rising at the rate of 3//8pi meter oer minute when its depth is

An elevator descends into a mine shaft at the rate of 6 meters per minute. If the descends starts from 10m above the ground level, how long will it take to reach -350m.

A lift descends into an underground floor at the rate of 6 meters per minute If the decent starts from 10 meters above the ground level,how much time will it take to descend 350 meters ?

The count rate from a radioactive sample falls from 4.0 xx 10^(6) per second to 1.0 xx 10^(6) per second in 20 hours. What will be the count rate 100 hours after the beginning?

The rate constant for the first order decomposition of H_(2)O_(2) is given by the following equation : log k =14.34-1.25 K//T. Calculate E_(a) for this reactin and at what temperature will its half-life period be 256 minutes ?

The normal activity of living carbon - containing matter is found to be about 15 decays per minute for every gram of carbon. This activity arises from the small proportion of radioactive ._(6)^(14)C present with the stable carbon isotope ._(6)^(12)C . When the organism is dead, its interaction with the atmosphere (which maintains the above equilibrium activity. ceases and its activity begins to drop. From the know half-life (5730 years.) of ._(6)^(14)C , and the measured activity, the age of the specimen can be approximately estimated. This is the principle of ._(6)^(14)C dating used in archaeology. Suppose a specimen from Mohenjodaro gives an activity of 9 decays per minute per gram of carbon. Estimate the approximate age of the Indus-Valley civilisation.