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A solid sphere of mass M, radius R and having moment of inertia about an axis passing through the centre of mass as I, is recast into a disc of thickness t, whose moment of inertia about axis passing through its edge and perpendicular to the plane remains I. Then, radius of the disc will be
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
Bond angle of $H_2O$ is
jeemain
chemistry
unit15
p-block-elements
q20
easy
sec-a
asked
Nov 26, 2013
by
sreemathi.v
1
answer
In a rectangular lamina shown in figure $AB= \large\frac{BC}{2}$. The moment of inertia of the lamina is minimum along the axis passing through
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
A thin rod of length l and mass m is turned at mid- point 0 at an angle of $60^{\circ}$ . The moment of inertia of the rod about an axis passing through 0 and perpendicular to the plane of the rod will be
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
Allotropes of oxygen are :
jeemain
chemistry
unit15
p-block-elements
q19
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Shape of $H_2S$ is
jeemain
chemistry
unit15
p-block-elements
q18
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Moment of inertia of a uniform rod of length L and mass M, about an axis passing through $L/4$ from one end and perpendicular to its length is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
How does stability of chalcogens vary
jeemain
chemistry
unit15
p-block-elements
q17
easy
sec-a
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Lithium doesn't form Alum
jeemain
chemistry
unit15
p-block-elements
q16
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
From a disc of mass M and radius R, a smaller disc of radius $\large\frac{R}{2}$ is cut out as shown. The moment of inertia of the remaining portion about an axis through the centre 0 and perpendicular to the plane of the disc is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
DiBorane hybridazition is
jeemain
chemistry
unit15
p-block-elements
q15
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Moment of inertia of a semicircular ring about an axis perpendicular to its plane and passing through its centre of mass. (mass M,Radius R)
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
Borax formulate :
jeemain
chemistry
unit15
p-block-elements
q14
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
The Reductance of 'ns' electrons towards participation in bond formation is known as
jeemain
chemistry
unit15
p-block-elements
q13
sec-a
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Moment of inertia of a square lamina about one of the diagonals is :
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 26, 2013
by
meena.p
1
answer
The structure of $N_2O$ is
jeemain
chemistry
unit15
p-block-elements
q12
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
The reducing nature of the hydrides
jeemain
chemistry
unit15
p-block-elements
q11
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
In the following which is correct in stability order
jeemain
chemistry
unit15
p-block-elements
q10
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Name the metalloid present in V A Group
jeemain
chemistry
unit15
p-block-elements
q9
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
A uniform triangular plate of mass m whose vertices are ABC and has length $l, \frac{l}{2}$ and $\large\frac{l}{\sqrt 2}$. Find the moment of inertia of this plate about an axis passing through the point B and perpendicular to the plane of the plate
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
Moment of inertia of a portion of a disc about an axis perpendicular to its plane; Mass of the object is M and radius R is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
$NO$ belongs to which category?
jeemain
chemistry
unit15
p-block-elements
q8
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Stability order of VA group hydrides is
jeemain
chemistry
unit15
p-block-elements
q7
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
What acts as a catalyst in cyanamids process
jeemain
chemistry
unit15
p-block-elements
q6
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
The Bond angle of Ammonia
jeemain
chemistry
unit15
p-block-elements
q5
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Metallic nature in V-A elements
jeemain
chemistry
unit15
p-block-elements
q4
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
$NH_3$ can be prepared by
jeemain
chemistry
unit15
p-block-elements
q3
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Which acid is manufactured by Ostwald's process
jeemain
chemistry
unit15
p-block-elements
q2
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Moment of inertia of three uniform rods of mass M and length l joined to form an equilateral triangle, about an axis passing through one of its sides.
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
The general electronic configuration of p-block elements is
jeemain
chemistry
unit15
p-block-elements
q1
sec-a
easy
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Moment of inertia of a thin rod of mass M and length l about an axis as shown .
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
medium
asked
Nov 26, 2013
by
meena.p
1
answer
If $\Delta=\begin{vmatrix}x^n&x^{n+2}&x^{2n}\\1&x^p&p\\x^{n+5}&x^{p+6}&x^{2n+5}\end{vmatrix}=0$ then $p$ is given by
jeemain
math
class12
ch4
determinants
q25
properties-of-determinants
difficult
asked
Nov 26, 2013
by
sreemathi.v
1
answer
If a point $(x,y)$ moves on a curve and satisfies the equation $\small\begin{vmatrix}a&b&ax+by\\b&c&bx+cy\\ax+by&bx+ay&0\end{vmatrix}=0$ then
jeemain
math
class12
ch3
matrices
q24
elementary-operation-(transformation)-of-a-matrix
difficult
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Find the value of determinant $\begin{vmatrix}1&x&y+z\\1&y&z+x\\1&z&x+y\end{vmatrix}$
jeemain
math
class12
ch4
determinants
q23
evaluate-determinants
difficult
asked
Nov 26, 2013
by
sreemathi.v
1
answer
If the system of equations $x+2y-3z=1$, $(p+2)z=3$, $(2p+1)y+z=2$ is inconsistent, then the value of $p$ is
jeemain
math
class12
ch4
determinants
q22
system-of-linear-equations
difficult
asked
Nov 26, 2013
by
sreemathi.v
1
answer
If the system of equations $ax+y+z=0$, $x+by+z=0$, $x+y+cz=0$, where $(a,b,c\neq 1)$ has a non-trivial solutions, then the value of $\large\frac{1}{1-a}+\frac{1}{1-b}+\frac{1}{1-c}$ is
jeemain
math
class12
ch4
determinants
q21
system-of-linear-equations
difficult
asked
Nov 26, 2013
by
sreemathi.v
1
answer
Moment of inertia of a rectangular plate about an axis passing through its centre and perpendicular to its plane
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
The moment of inertia of a uniform rectangular plate about an axis passing through its midpoint and parallel to its length l is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
If the moment of inertia of a disc about an axis tangential and parallel to the surface is I.Then find the moment of inertia about the axis tangential but perpendicular to the surface in terms of the I?
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
Three rings each of mass M and radius R are arranged as shown. The moment of inertia of the system about $YY'$ will be
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
The moment of inertia of a sphere of mass M and radius R about an axis passing through centre is $\large\frac{2}{5}\;$$MR^2$. The radius of gyration of the sphere about a parallel axis to the sphere is
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
On a uniform rod of length l and mass M, two identical masses m are kept at the extreme ends. What is the moment of inertia of the system about an axis passing through its center and perpendicular to its length ?
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
A torque of $20\; Nm$ acting on a rigid body produces are angular acceleration of $4 rad /s^2$ What is the moment of inertia of the rigid body rotating about the fixed axis?
jeemain
physics
class11
unit5
rotational-motion
moment-of-inertia
easy
asked
Nov 25, 2013
by
meena.p
1
answer
If a square matrices $A$ and $B$ are such that $AA^{\theta}=A^{\theta}A$, $BB^{\theta}=B^{\theta}B$, $AB^{\theta}=B^{\theta}A$ then $AB(AB)^{\theta}$ is equal to
jeemain
math
class12
ch3
matrices
q20
transpose-of-a-matrix
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
If $A,B,C$ are the angles of a $\Delta$le then the value of the determinant $\small\begin{vmatrix}-1+\cos B&\cos C+\cos B&\cos B\\\cos C+\cos A&-1+\cos A&\cos A\\-1+\cos B&-1+\cos B&-1\end{vmatrix}$ is
jeemain
math
class12
ch4
determinants
q19
area-of-a-triangle
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
Matrix $A$ satisfies $A^2=2A-I$ where $I$ is the identity matrix. For $n \geq 2$, $A^n$ is equal to $(n\in N)$
jeemain
math
class12
ch3
matrices
q18
operations-on-matrices
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
For all values of $A,B,C$ and $P,Q,R$ the value of the determinant
$(x+a)^3\small\begin{vmatrix}\cos(A-P)&\cos (A-Q)&\cos(A-R)\\\cos(B-P)&\cos(B-Q)&\cos(B-R)\\\cos(C-P)&\cos(C-Q)&\cos(C-R)\end{vmatrix}$ is
jeemain
math
class12
ch4
determinants
q17
evaluate-determinants
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
If $A^k=0$ for some value of k.$(I-A)^P=I+A+A^2+....+A^{k-1}$ thus P is
jeemain
math
class12
ch4
determinants
q16
adjoint-and-inverse
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
A torque of $30\; N-m$ is applied on a 5 kg wheel whose moment of inertia is $2 kg\;m^2$ for $10 \;seconds$. The angle covered by the wheel in $10\; s$ will be
jeemain
physics
class11
unit5
rotational-motion
torques
easy
asked
Nov 25, 2013
by
meena.p
1
answer
If $A,B$ and $C$ are the angles of a $\Delta$le then $\begin{vmatrix}\sin 2A&\sin C&\sin B\\\sin C&\sin 2B&\sin A\\\sin B&\sin A&\sin 2C\end{vmatrix}$ = $\lambda\sin A\sin B\sin C$, then $\lambda$ is
jeemain
math
class12
ch4
determinants
q15
area-of-a-triangle
difficult
asked
Nov 25, 2013
by
sreemathi.v
1
answer
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