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Recent questions tagged physics
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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
Which of the following statements is not correct? <br> 1) In a domestic electric circuits the live wire usually has red insulation <br> 2) The neutral wire has black insulation <br> 3) The earth wire has green insulation
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
Which of the following instrument works on electromagnetic induction?
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
2
answers
Dimension of acceleration
physics
asked
Sep 15, 2017
by
imvprakash18
1
answer
The minimum wind velocity required to obtain useful energy with a wind mill is
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
The maximum temperature attained in a concave reflector type solar cooker is
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
How much current will be drawn by an electric heater from a 220V line, if the resistance of the heater is 50 ohms?
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
The magnification of a plane mirror is +1. What does this signify?
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
What is the unit for refractive index?
cbsc
class 10
olympiad
science
physics
t3
asked
Sep 15, 2017
by
priyanka.c
1
answer
______ is the commonly used material to manufacture solar cells
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 15, 2017
by
priyanka.c
1
answer
______ is the source of energy in the sun and other planets
cbsc
class 10
olympiad
science
physics
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asked
Sep 15, 2017
by
priyanka.c
1
answer
Lignite, Anthracite and Bituminous are varieties of
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 15, 2017
by
priyanka.c
1
answer
Which of the statement is true <br> (A) An AC can be changed to DC when required <br> (B) In India the frequency of AC is 60 Hertz <br> (C) The power wastage in AC transmission is high when compared to DC <br> (D) In an AC the direction is changed after a fixed interval
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 15, 2017
by
priyanka.c
1
answer
The magnitude of induced current depends upn
cbsc
class 10
olympiad
science
physics
t4
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Sep 15, 2017
by
priyanka.c
1
answer
Read the following passage and answer below <br><br> Direction of force acting on a charge moving in a magnetic field <br><br> Since the direction of current is the same as that of the motion of a positive charge, the direction of force acting on it, when moving perpendicular to direction field is the same as that acting on a current carrying conductor placed perpendicular to the direction of magnetic field. The direction of this force is given by Flemming's left-hand rule. Obviously the force acting on a negative charge moving in a direction perpendicular to the field opposite to that acting on a positive charge. <br><br> Question: When both the magnetic field and the electric field are kept in the same direction, as electron which is moving in this field will
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 15, 2017
by
priyanka.c
1
answer
A ball falls from a height of 5m and strikes the roof of a lift. If at the
physics
asked
Sep 15, 2017
by
tumpa.mahanty.12
1
answer
A projectile is thrown at an angle of 40 degree with the horizontal and it'
physics
asked
Sep 15, 2017
by
hcoraon.mgs
1
answer
Read the following passage and answer below <br><br> Direction of force acting on a charge moving in a magnetic field <br><br> Since the direction of current is the same as that of the motion of a positive charge, the direction of force acting on it, when moving perpendicular to direction of magnetic field is the same as that acting on a current carrying conductor placed perpendicular to the direction of magnetic field. The direction of this force is given by Flemming's left-hand rule. Obviously the force acting on a negative charge moving in a direction perpendicular to the field opposite to that acting on a positive charge. <br> <br> Question : The force of an electron moving a magnetic field is
cbsc
class 10
olympiad
science
physics
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Sep 15, 2017
by
priyanka.c
1
answer
the mass and diameter of the planet are 3 times that of earth .what is the
physics
asked
Sep 15, 2017
by
bhumikarampure
1
answer
The centripetal force of acting on a particle moving in circular orbit depe
physics
asked
Sep 15, 2017
by
avgvishwakarma
1
answer
A gun of mass 10 kg fires 4 bullets per second. The mass of each bullet is
physics
asked
Sep 14, 2017
by
ab.chandrashekar61
1
answer
The centre of mass of 3 particles of mass 10 grams 20 grams in 30 grams is
physics
asked
Sep 14, 2017
by
muthyala.kalyani511
0
answers
Hey uniform thin rod of length 1 m in Mass 3 kilogram is attached to unifor
physics
asked
Sep 14, 2017
by
muthyala.kalyani511
0
answers
An electric toaster has a rating of 155W 220V marked on it/ What should be the minimum ratio(in whole number) of the fuse wire that may be required for the safe use with this toaster?
cbsc
class 10
olympiad
science
physics
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asked
Sep 14, 2017
by
priyanka.c
1
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Two wires are made up of silver. Both wires are 2m long, but wire A is 2mm thick and wire B is 4mm thick. The resistivity is
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 14, 2017
by
priyanka.c
1
answer
The plot which shows the dependence of current I on potential difference V across a resistance as shown in the figure is
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 14, 2017
by
priyanka.c
1
answer
The lens which can form a virtual, erect, magnified image is
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 14, 2017
by
priyanka.c
1
answer
A man wishes to use a concave mirror of 50cm as a magnifying glass. Upto what distance can you stand from the mirror?
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 14, 2017
by
priyanka.c
1
answer
Focal length of a concave mirror depends upon
cbsc
class 10
olympiad
science
physics
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Sep 14, 2017
by
priyanka.c
1
answer
The blue colour of the sky is due to
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 14, 2017
by
priyanka.c
1
answer
The power of accommodation of the eye decreases due to aging, this defect is called
cbsc
class 10
olympiad
science
physics
t4
asked
Sep 14, 2017
by
priyanka.c
1
answer
A solid sphere roll down on an inclined plane of 30° inclination ratio of
physics
asked
Sep 14, 2017
by
choudharyakram717
0
answers
Four thin uniform rod each of length L and mass m are joined to form a squa
physics
asked
Sep 14, 2017
by
agratasingh2000
1
answer
A body is projected vertically upward with a velocity 20ms−1 . Find the d
physics
asked
Sep 14, 2017
by
dakpalu20
1
answer
Write the expression for maximum kinetic energy of positively charged parti
physics
asked
Sep 13, 2017
by
sanskrutijakati
1
answer
Find mass and speed of 2 mev electron
physics
asked
Sep 13, 2017
by
vishalsyn123
1
answer
What is the mass and speed of 2mev electron
physics
asked
Sep 13, 2017
by
vishalsyn123
1
answer
A body of mass 2kg moving with a velocity 6mps strikes inelastically anothe
physics
asked
Sep 13, 2017
by
dineshkotha18
0
answers
A body of mass 2kg moving with a velocity 6mps strikes inelastically anothe
physics
asked
Sep 13, 2017
by
dineshkotha18
0
answers
On what factor does internal resistance of cell depends
physics
asked
Sep 13, 2017
by
aniket325854
0
answers
On what factor does internal resistance of cell depends
physics
asked
Sep 13, 2017
by
aniket325854
1
answer
The displacement of particle in SHM varies according to the relation x=4(co
physics
asked
Sep 13, 2017
by
srachikasingh
1
answer
A person moves 20 m north and then he moves 30m south west and finally he m
physics
asked
Sep 13, 2017
by
iamajay038
0
answers
A car A moves along North with velocity 30km/h and another car B moves alo
physics
asked
Sep 13, 2017
by
shanikumarsingh100
0
answers
ucosθ0=u/2 how do you consider
physics
asked
Sep 13, 2017
by
ktahseen834
1
answer
Derive an expression for the energy stored in a capacitor
physics
asked
Sep 12, 2017
by
sibintbiju7510
1
answer
5 derivation of projectile
physics
asked
Sep 12, 2017
by
ghoshankit700
1
answer
A ball thrown vertically upwards with a speed of 19.6ms from the top of a t
physics
asked
Sep 12, 2017
by
parvathyr916
1
answer
Two short magnets P and Q are placed one over another with their magnetic a
physics
asked
Sep 12, 2017
by
gtcedge
1
answer
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