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Questions asked by meena.clay6
Questions
652
questions
0
answers selected
How $cosec \theta - \cot \theta=q => \therefore cosec \theta+\cot \theta=\large\frac{1}{q}$
student-questions
math
asked
Aug 6, 2019
1
answer
If $x \sin (\alpha +y)=\sin y $ and $y'=\large\frac{m}{(x^2+2nx+1)}$, then
student-questions
maths
asked
Aug 6, 2019
1
answer
The equation of projectile is $y= 16x - \large\frac{x^2}{4}$ the horizontal range
student-questions
maths
asked
Jul 31, 2019
1
answer
The ratio of powers dissipated respectively in R and 3R in circuit given below is
student-questions
physics
asked
Jul 31, 2019
2
answers
In the figure electric field at $P_1$ is $\bar{E_1}$ and electric field at $P_2$ is $\bar{E_2}$ Find the angle between $\bar{E_1}$ and $\bar{E_2}$
student-questions
physics
asked
Jul 31, 2019
1
answer
Prove that the line $2x + y = 4$ is a tangent to the circle $x^2+y^2+6x- 10y + 29= 0$.
student-questions
maths
asked
Jul 31, 2019
1
answer
Find the value of $9^{\large\frac{1}{3}},9^{\large\frac{1}{9}},9^{\large\frac{1}{127}}......$upto $\infty$
student-questions
maths
asked
Jul 30, 2019
1
answer
The coordinate of a moving particle at a time given by , $x= 5 \sin 10t,y=5 \cos 10t$. The speed of the particle is (in m/s)is:
student-questions
physics
asked
Jul 30, 2019
1
answer
A body A is projected upward with velocity 98m/s. The second body B is projected with same initial velocity after 4 seconds . Both bodies will meet after
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 29, 2019
0
answers
Consider the motion of the tip of the minute hand of a clock. In one hour
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 29, 2019
1
answer
A body starts from road. What is the ratio of the distance travelled by the body during 4th and 3rd second
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 29, 2019
1
answer
One car is moving on a straight road covers one third of the distance with $20\;km/hr$ and rest with $60\;km/hr$. The average speed
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 29, 2019
1
answer
Water drops fall at regular interval from tap which is 5 m above the ground . The third drop is leaving the tap at the instant first drop touches the ground . How far above the ground is the second drop at that instant.
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hr and walks both with a constant speed of 4 km/hr . His average speaks for the round trip is
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
Two trains each 50 m long are travelling in opposite direction with velocity 10 m/s and 15 m/s. The time of crossing is
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
A stone is thrown vertically upwards with a velocity $98 m/s$ Its velocity will be zero after
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
A particle starts from rest with constant acceleration $2m/s^2$ . Find the displacement in 5th sec
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
Two bodies of different masses say 1 kg and 5 kg are dropped simultaneously a tower. They will reach the ground
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
A car moving along a straight highway with speed $126\;km/hr$ is brought to a stop with in a distance of 200 m . ?What is the retardation of the car, and how long does it take for the car to stop .
cbse11
physics
ch2
motion-in-straight-line
asked
Jul 25, 2019
1
answer
A planet is at a distance of $8.427 \times 10^8 \;km$ from earth. Its angular diameter $=35.72''$ of an arc. Calculate diameter of planet.
cbse11
physics
ch1
units-and-measurement
asked
Jul 25, 2019
1
answer
If Area(A) , velocity(V) and density $(\rho)$ are base units , then dimensional formula of force
cbse11
physics
ch1
units-and-measurement
asked
Jul 25, 2019
1
answer
The percentage error in measuring radius of a sphere is found to be $0.05\%$ calculate the percentage of error is measuring its volume
cbse11
physics
ch1
units-and-measurement
asked
Jul 25, 2019
1
answer
Magnification of a microscope is 150. A person find the average width of a thread to be 3 mm . what is estimate of thickness of thread
cbse11
physics
ch1
units-and-measurement
asked
Jul 24, 2019
1
answer
Find density of lead if its relative density = 11.3
cbse11
physics
ch1
units-and-measurement
asked
Jul 24, 2019
1
answer
convert 1kg $m^2\;s^{-2}$ into = ______$g cm^{-2}S^{-2}$
cbse11
physics
ch1
units-and-measurement
asked
Jul 23, 2019
1
answer
Find the distance between Quasar (the most distance objects from earth) in km if light takes 3.0 billion year h reach us
cbse11
physics
ch1
units-and-measurement
asked
Jul 23, 2019
1
answer
Error in measurement of length is found to be $0.2\%$ what is the error in meaning the volume of a cube .
cbse11
physics
ch1
units-and-measurement
asked
Jul 23, 2019
1
answer
If $\large\frac{dy}{dx}$$=2e \cos (\omega t+ \phi)$ the dimensional formula for $(\omega t +\phi)$ is
cbse11
physics
ch1
units-and-measurement
asked
Jul 23, 2019
1
answer
Surface tension of a liquids 70 dynes/cm. In MKS system its value is
cbse11
physics
ch1
units-and-measurement
asked
Jul 17, 2019
1
answer
Dimensions of $\large\frac{1}{2} \in_0 E^2$ where $T_n$ primitively and $E_n$ electric field
cbse11
physics
ch1
units-and-measurement
asked
Jul 17, 2019
1
answer
Which one represent correct dimension of co efficient of viscosity
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
1
answer
The pair having same dimensional formula
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
1
answer
If C and L denote capacitance and independent then the dimensions of LC are
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
1
answer
If $x=\log_ea$ Maximum possible fractional error in x is
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
1
answer
If $T= 2 \pi \sqrt{\large\frac{ML^3}{3Yq}}$ find the dimension of q where T is time period of bar of mass M and length L and Yaingi modulus Y
cbse11
physics
ch1
units-and-measurement
asked
Jul 16, 2019
1
answer
Which of the following ion is the largest in size ?
cbse
class11
chemistry
ch3
classification-of-elements-and-periodicity-in-properties
asked
Jul 11, 2019
1
answer
Which of these dose not reflect the periodicity of the elements
cbse
class11
chemistry
ch3
classification-of-elements-and-periodicity-in-properties
asked
Jul 10, 2019
1
answer
Find the volume of the tetrahedron formed by the four planes $x+y=0,y+z=0,z+x=0,x+y=1$
cbse
class12
ch10
asked
Jul 9, 2019
1
answer
Which statement is incorrect?
cbse
class11
chemistry
ch3
classification-of-elements-and-periodicity-in-properties
asked
Jul 9, 2019
1
answer
Which out of $Cu^{2+},Fe^{2+}$ and $Cr^{3+}$ has highest paramagnetism and why
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
1
answer
How many radial/spherical nodes will be present in the 5f orbitals?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
1
answer
What will be the maximum number of electrons having the same spin in an atom with n+l=4 ?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
1
answer
When is the energy of electron regarded as zero.
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 9, 2019
1
answer
How many unpaired electrons are present in $Pd (Z = 46)$?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 8, 2019
1
answer
Which element does not have any neutron?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 8, 2019
1
answer
The increasing order (lowest first) for the values of e/m (charge/mass) for
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 5, 2019
1
answer
Atomic number of an element is equal to the number of
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
1
answer
Which out of $Cu^{2+},Fe^{2+}$ and $Cr^{3+}$ has highest paramagnetism and why
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
1
answer
How many radial/spherical nodes will be present in the 5f orbitals?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
1
answer
What will be the maximum number of electrons having the same spin in an atom with n+l=4 ?
cbse
class11
chemistry
ch2
structure-of-atom
asked
Jul 3, 2019
1
answer
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