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Recent questions tagged physics
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Read the passage below and answer the following question below <br><br> When the direction of relative motion between the magnet and the coil is reversed i.e; instead of bringing the magnet and the coil towards each other, if they are taken away from each other, the direction of deflection in the galvanometer (i.e; induced current in the coil) is also reversed. It is due to the reason that when we being the magnet and the coil closer to each other, the magnetic flux linked with the coil increases whereas when these are moved away from each other, the magnetic flux linked with the coil decreases. Thus it is the change (whether an increase or a decrease) in magnetic flux in the coil which induces current in the coil. Increasing magnetic flux induces current in one direction whereas decreasing magnetic flux induces current in the opposite direction. <br><br> Question : <br> 1. Increase in the magnetic flux increases the induced current <br> 2. Decrease in the flux decreases the induced current
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
Read the passage below and answer the following question below <br><br> When the direction of relative motion between the magnet and the coil is reversed i.e; instead of bringing the magnet and the coil towards each other, if they are taken away from each other, the direction of deflection in the galvanometer (i.e; induced current in the coil) is also reversed. It is due to the reason that when we being the magnet and the coil closer to each other, the magnetic flux linked with the coil increases whereas when these are moved away from each other, the magnetic flux linked with the coil decreases. Thus it is the change (whether an increase or a decrease) in magnetic flux in the coil which induces current in the coil. Increasing magnetic flux induces current in one direction whereas decreasing magnetic flux induces current in the opposite direction. <br><br> Question : What is the factor which induces the current in the coil?
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
In an experiment to study the dependence of current on potential difference across a resistor a student obtained graph as shown in fig: <br> The value of the resistor is
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
Read the following statement and mark the correct option <br> 1. Resistivity of a conductor depens on the nature of the material of the conductor <br> 2. Resistance of a conductor is inversely proportional to its length
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
Parallel rays from the top of a distant object incident on a cave mirror from an image on the screen. The diagram correctly showing the image of the object on the screen is
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
What is the value of focal length of a plane mirror?
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
What does the negative magnification imply?
cbsc
class 10
olympiad
science
physics
t2
asked
Sep 18, 2017
by
priyanka.c
1
answer
Number of ways for which a cube can acquire least moment of inertia??????
physics
asked
Sep 18, 2017
by
sradhanjalinaturae555
1
answer
The angular velocity of the second's needle is watch is
physics
asked
Sep 18, 2017
by
kanhukanhu72
1
answer
what will be the apparent weight of man 50kg, in a elevator which is stati
physics
asked
Sep 17, 2017
by
toggampanyang
1
answer
What are the causes of following (a) Rain drops fall downwards. (b) Tides
physics
asked
Sep 17, 2017
by
yt322852
1
answer
What are the causes of following (a) Rain drops fall downwards. (b) Tides
physics
asked
Sep 17, 2017
by
yt322852
1
answer
Mention two properties of soft iron due to which it is preferred to making
physics
asked
Sep 17, 2017
by
suvendud21
1
answer
unit of electrical permitivity of free space
physics
asked
Sep 17, 2017
by
amishashruti574
1
answer
In a dam generation hydro-electric power, water falls at a rate of 100 kg s
physics
asked
Sep 17, 2017
by
Rohitraman17062002
0
answers
In a dam generation hydro-electric power, water falls at a rate of 100 kg s
physics
asked
Sep 17, 2017
by
Rohitraman17062002
1
answer
The reflected and refracted rays are perpendicular. Prove
physics
asked
Sep 17, 2017
by
sowmya.maruthi2061999
0
answers
The percentage of solar energy that strikes the periphery of the earth trapped by the earth is
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
Energy released during the fission of 1kg of U-235 is equivalent to energy obtained from burning coal weighing
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
In a voltmeter there are 20 divisions between the 0 mark and 0.5 mark. The least count of the voltmeter is
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
A device which is used to measure current, voltage and resistance is
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
The potential difference between the points A and B of the circuit as shown in the fig is
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
The resistivity of a wire depends upon its
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
Two wires A and B are made of copper. Both wires are 1m long but wire A is 1mm thick and wire B is 2 mm thick. The resistivity is
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
Induced current flows through a coil
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
When a fuse is rated 6A. It means,
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
Which of the following properties of a proton can change while it moves freely in a magnetic field?
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
On the basis of their experiment to trace the path of a ray of light passing through a rectangular glass slab four students arrived at the following interpretation:
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
With a concave mirror an object is placed at a distance x suffix 1 from the
physics
asked
Sep 17, 2017
by
vnsrewin948
0
answers
A student determines the focal length of a device X, by focusing the image of a far off object on the screen positioned as shown in the figure. The device X is
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
A student obtains a blurred image of an object on a screen by using a concave mirror. In order to obtain a sharp image on the screen, he will have to shift the mirror
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
The focal length of a lens of power -2.0D. What type of lens is this?
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 17, 2017
by
priyanka.c
1
answer
Two wires of equal length are bent in form of an equilateral triangular loo
physics
asked
Sep 16, 2017
by
vanikanika.vj
0
answers
Two wires of equal length are bent in form of an equilateral triangular loo
physics
asked
Sep 16, 2017
by
vanikanika.vj
0
answers
a block of mass M rest on a rough horizontal surface . the coefficient of f
physics
asked
Sep 16, 2017
by
adarshsaxena25
0
answers
The initial velocity of particle is 9ms-1 and its retardation is 2ms -2. Th
physics
asked
Sep 16, 2017
by
mohdmaneeb923
0
answers
if we choose velocity of light C acceleration due to gravity g and the atmo
physics
asked
Sep 16, 2017
by
khandelwal.brashav20
0
answers
Calucate the angular separation between the first order minima on either s
physics
asked
Sep 16, 2017
by
stephenstanley492
1
answer
To obtain magnified, inverted image in a concave mirror, object should be held
cbsc
class 10
olympiad
science
physics
t1
asked
Sep 16, 2017
by
priyanka.c
1
answer
A physical quantity P is described by the relation 1 2 2 3 4 P a b c d =
physics
asked
Sep 16, 2017
by
imvprakash18
0
answers
The displacement x of a particle in time t is given by 10t*2-4t-x=0.where x
physics
asked
Sep 16, 2017
by
abcrkking
0
answers
In a fusion reaction the synthesis of triton is from
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
What are the other two gases other than carbon dioxide that are given out during burning of fossil fuels and contribute towards acid rain
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
Hydrogen is a
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
On plugging the key, the voltmeter/ammeter (A) is likely to be damaged in the circuit shown in the figure
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
Derive a scalar relation between electric field and potential gradient
physics
asked
Sep 15, 2017
by
kashmirsingh0461
0
answers
Twinkling of the stars is due to
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
The space between eye lens and retina contains a transparent jelly called
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
Read the following passage carefully and answer the question below <br><br> One of the remarkable properties of the eye is the ability of the eye to observe distinctly the objects suitable at widely different distances from the eye. This property of the eye is called accommodation or power of accommodation of the eye. <br> The accommodation of the eye is due to the action of ciliary muscles holding the eye lens. For observing distance objects (say at infinity) the ciliary muscle are relaxed. The eye lens is thin and it has maximum focal length and minimum converging power. The image of the distance object is formed on the retina. Thus for observing distant object eye is in relaxed state. It is said to be unaccommodated. <br><br> When observing distant objects, the eye lens has
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
Read the passage carefully and answer the question below <br><br> One of the remarkable properties of the eye is the ability of the eye to observe distinctly the objects situated at widely different distance from the eye. This property of the eye is called accommodation or power of accommodation of the eye. <br> The accommodation of the eye is due to the action of ciliary muscles holding the eye lens. For observing distance objects (say at infinity) the ciliary muscles are relaxed. The eye lens is thin and it has maximum focal length and minimum converging power. The image of the distance object is formed on the retina. Thus for observing distant objects eye is in relaxed state. It is said to be unaccommodated. <br><br> The accommodation of the eye is due to the action of
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
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