info@clay6.com
+91-9566306857
Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
EAMCET
>>
Physics
The radio activity of a sample is $'X'$ at a time $'t_1'$ and $'Y'$ at a time '$t_2'$. If the mean life time of the specimen is 't', the number of atoms that have disintegrated in the time interval $(t_1-t_2)$ is :
\[\begin {array} {1 1} (1)\;Xt_1-Xt_2 & \quad (2)\;X-Y \\ (3)\;\frac{X-Y}{t} & \quad (4)\;(X-Y)t \end {array}\]
jeemain
eamcet
physics
2009
q115
Share
asked
Oct 14, 2013
by
meena.p
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
$ (4)\;(X-Y)t $
answered
Nov 7, 2013
by
pady_1
Please
log in
or
register
to add a comment.
Related questions
The time period of a simple pendulum is T. When the length is increased by 10 cm,its period is $T_1$. When the length is decreased by 10 cm, its period is $T_2$. Then, the relation between $T,T_1\;and T_2$ is :
jeemain
eamcet
physics
2004
q11
asked
Nov 13, 2013
by
meena.p
1
answer
A body is projected vertically upwards at time $t=0$ and it is seen at a height $'H'$ at time $t_1$ and $t_2$ seconds during its flight. The maximum height attained is : (g is acceleration due to gravity)
jeemain
eamcet
physics
2009
q82
asked
Oct 11, 2013
by
meena.p
1
answer
Let $(x_1,y_1)$ be the point of intersection of the tangent to the parabola $y^2=4ax$ at the points $t_1$ and $t_2$ . Then $x_1=a{t_1}{t_2}$ and $y_1=a(t_1+t_2)$
parabola
asked
Feb 20, 2015
by
tanvirahmedodesk
1
answer
If electron of mass $m_e$ moves through a certain distance in a uniform electric field in time $t_1$ and proton of mass $m_p$ moves same distance in time $t_2$ , the ratio $\large\frac{t_1}{t_2}$ will be :
jeemain
physics
class12
ch1
electrostatics
electric-charges-and-fields
electric-field
difficult
asked
Jan 15, 2014
by
meena.p
1
answer
A simple pendulum has a time period $T_1$ When on earth's surface, and $T_2$ When taken to a height R above the earth's surface, where R is radius of earth. Then $\large\frac{T_2}{T_1}$ is
jeemain
physics
class11
unit6
gravitation
q13
easy
asked
Aug 10, 2013
by
meena.p
1
answer
When a wave traverses a medium , the displacement of a particle located at $'x'$ at a time $'t'$ is given by $y=a \sin (bt-cx), where a,b and c are constants of the wave, which of the following is a quantity with dimensions?
jeemain
eamcet
physics
2009
q81
asked
Oct 11, 2013
by
meena.p
1
answer
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...