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Lavneesh Rajput
Subject: Physics
, asked on 12/5/18
derive this equation
Q.(b) : According to kinetic theory of an ideal gas
$PV=\frac{2}{3}u\therefore \frac{u}{V}=\frac{3}{2}P$
Answer
1
Chinmayi
Subject: Physics
, asked on 28/4/18
Kindly explain the answer
Q.72. A large object is placed at exactly 55 % of the distance to the moon from the earth. Eventually the object will
(A) fall to the sun.
(B) fall to the moon.
(C) fall to the earth.
(D) remain in the same place.
(E) drift out of the solar system.
Answer
1
Aparna Sahu
Subject: Physics
, asked on 25/4/18
Two masses m
_{1}
and m
_{2}
are attached to a string which passes over a frictionless smooth pulley. When m
_{1}
= 10 kg, m
_{2}
= 6 kg, the acceleration of masses is
Answer
1
Aparna Sahu
Subject: Physics
, asked on 23/4/18
Solve this:
Q.59. What is the amount of charge possessed by 1 kg of electrons?
(a) 1.76
$\times {10}^{11}C$
(b) 1.76
$\times {10}^{-9}C$
(c) 1.76
$\times {10}^{-7}C$
(c) 1.76
$\times 10$
Answer
1
Aparna Sahu
Subject: Physics
, asked on 23/4/18
Solve this:
47. If T is the surface tension of a fluid, then the energy needed to break a liquid drop of radius R into 64 equal drops is
(a)
6nR
^{2}
T
(b)
nR
^{2}
T
(c)
12nR
^{2}
T
(d)
8nR
^{2}
T
Answer
1
Aparna Sahu
Subject: Physics
, asked on 22/4/18
Solve 7
Q7. A body weights 50 grams in air and 40 grams in water, how much would it weight in liquid of specific gravity 1.5?
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 21/4/18
Q. The magnetic moment of the arrangement shown in the figure is
Zero
2
$\sqrt{2}$
M
M
2M
Answer
2
Jeneeta Eliza John
Subject: Physics
, asked on 21/4/18
To shield an instrument from external magnetic field, it is placed inside a cabin made of (1) Wood (2) Plastic (3) Diamagnetic substances (4) Iron Shouldn't the answer be Diamagnetic sunstance since magnetic field does not pass through it? Ans given is Iron..Why iron?
Answer
1
Aparna Sahu
Subject: Physics
, asked on 21/4/18
A diatomic gas initially at 18
^{o}
C is compressed adiabatically to one-eighth of its original volume. The temperature after compression will be
(1) 18
^{o}
C
(2) 887.4
^{o}
C
(3) 395.4
^{o}
C
(4) 144
^{o}
C
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 21/4/18
A dip circle in geographic meridian at a place where dip and declination are known to be respectively 30 degree and 45 degree. What dip will be given by dip circle? Ans is tan-1 root (2/3) Please don't send any links
Answer
1
Mitali
Subject: Physics
, asked on 19/4/18
Although the solution to this is already available but i have doubt in it... so kindly solve it in the best possible way
Q. A wooden plate is hinged at one bottom end of a container and then the container is filled with water up to a height of 0.5 m. The specific gravity and length of the plate is 0.5 and 1 m respectively. The angle which the wooden plate makes with the vertical in equilibrium position is
A. 20
$\xb0$
B. 30
$\xb0$
C. 45
$\xb0$
Answer
1
Aparna Sahu
Subject: Physics
, asked on 4/4/18
Solve qus no. 16:
16. A compass needle of magnetic moment 60A-m
^{2}
, pointing geographic north at a place where the horizontal component of earth's magnetic field is 40 x 10
^{-6}
WB/m
^{2}
experiences a torque of 1.2 x 10
^{-3}
N-m. the Declination of the place is.
(a) 15
^{o}
(b) 45
^{o}
(c) 30
^{o}
(d) none of these.
Answer
1
Aparna Sahu
Subject: Physics
, asked on 3/4/18
$Abodyrollsdownaslopefromaheightof100m.It\text{'}svelocityatthefootoftheslope20m{s}^{-1}.Whatpercentageofitsinitialpotentialenergyisconvertedintokineticenergy?[g=10m{s}^{-2}]$
Answer
1
Aparna Sahu
Subject: Physics
, asked on 2/4/18
35. Two Cells in series give a deflection of
${60}^{\xb0}$
when connected to a tangent galvanometer and the cells aid each other. The deflection reduce to
$30\xb0$
when the cells oppse each other. The ratio of emf's of the cells in order is:
a. 1: 2
b. 2:1
c. 3:1
d. 1: 3
Answer
1
Lavneesh Rajput
Subject: Physics
, asked on 27/3/18
A circular road of radius r is banked for a speed v = 40 km/hr. A car of mass m attempts to go on the circular
road. The friction coefficient between the tyre and the road is negligible.
(a) The car cannot make a turn without skidding.
Answer
1
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Q.(b) : According to kinetic theory of an ideal gas

$PV=\frac{2}{3}u\therefore \frac{u}{V}=\frac{3}{2}P$

Q.72. A large object is placed at exactly 55 % of the distance to the moon from the earth. Eventually the object will

(A) fall to the sun.

(B) fall to the moon.

(C) fall to the earth.

(D) remain in the same place.

(E) drift out of the solar system.

_{1}and m_{2}are attached to a string which passes over a frictionless smooth pulley. When m_{1}= 10 kg, m_{2}= 6 kg, the acceleration of masses isQ.59. What is the amount of charge possessed by 1 kg of electrons?

(a) 1.76$\times {10}^{11}C$

(b) 1.76$\times {10}^{-9}C$

(c) 1.76$\times {10}^{-7}C$

(c) 1.76$\times 10$

47. If T is the surface tension of a fluid, then the energy needed to break a liquid drop of radius R into 64 equal drops is

(a)

6nR(b)^{2}TnR^{2}T(c)

12nR(d)^{2}T8nR^{2}TQ7. A body weights 50 grams in air and 40 grams in water, how much would it weight in liquid of specific gravity 1.5?

Q. The magnetic moment of the arrangement shown in the figure is

^{o}C is compressed adiabatically to one-eighth of its original volume. The temperature after compression will be(1) 18

^{o}C(2) 887.4

^{o}C(3) 395.4

^{o}C(4) 144

^{o}CQ. A wooden plate is hinged at one bottom end of a container and then the container is filled with water up to a height of 0.5 m. The specific gravity and length of the plate is 0.5 and 1 m respectively. The angle which the wooden plate makes with the vertical in equilibrium position is

A. 20$\xb0$

B. 30$\xb0$

C. 45$\xb0$

16. A compass needle of magnetic moment 60A-m

^{2}, pointing geographic north at a place where the horizontal component of earth's magnetic field is 40 x 10^{-6}WB/m^{2}experiences a torque of 1.2 x 10^{-3}N-m. the Declination of the place is.(a) 15

^{o}(b) 45^{o}(c) 30

^{o}(d) none of these.a. 1: 2

b. 2:1

c. 3:1

d. 1: 3

road. The friction coefficient between the tyre and the road is negligible.

(a) The car cannot make a turn without skidding.