The period of oscillations of a magnet i...

The period of oscillations of a magnet is 2 sec. When it is remagnetised so that the pole strength is 4 times its period will be

1sec

2sec

4sec

8sec

Text Solution

Verified by Experts

The correct Answer is:

Time period of oscillation of a magnet is
`T=2pisqrt(I/(MB))`
`(T_(2))/(T_(1))=sqrt((M_(1))/(M_(2)))`
`(T_(2))/2=sqrt(M/(4M))`
`T_(2)=1sec`

Topper's Solved these Questions

NTA TPC JEE MAIN TEST 113
NTA MOCK TESTS|Exercise PHYSICS|30 Videos
NTA TPC JEE MAIN TEST 124
NTA MOCK TESTS|Exercise PHYSICS |30 Videos

Similar Questions

Explore conceptually related problems

The period of oscillation of a magnet at a place is 4 seconds. When it is remagnetised, so that the pole strength becomes 1//9th of initial value, the period of oscillation in seconds is

Time period of oscillation of a magnetic needle is

The time period of oscillation of a body is 0.25 sec. Its frequency is ………….Hz.

The period of oscillations of a magnetic needle in a magnetic field is 1.0 sec. If the length of the needle is halved by cutting it, the time perood will be

The time period of oscillations of a simple pendulum is 1 minute. If its length is increased b 44% then its new time period of oscillation will be

The period of oscillation of a freely suspended bar magnet is 4 second. If it is cut into two equal parts length wise then the time period of each part will be

Time Period Or Period Of Oscillation

A magnet has time period of oscillations T in earth's magnetic field at a place. If it is replaced by a magnet of magnetic moment six times the magnetic moment of the original one, the time period at the same place will be

When a mass M is suspended from a spring, its period of oscillation is 2 second. If a mass 4 M is suspended from the same spring, then its period of oscillation will be

NTA MOCK TESTS-NTA TPC JEE MAIN TEST 120-PHYSICS

A projectile is fired with a velocity u at an angle theta with the gro...
Text Solution
|
If a copper rod (free to move and rotate) is brought in a region of a ...
Text Solution
|
The period of oscillations of a magnet is 2 sec. When it is remagnetis...
Text Solution
|
Two waves represented by the following equations are travelling in the...
Text Solution
|
A police car with a siren of frequency 8 KHz is moving with uniform ve...
Text Solution
|
The pendulum suspended from the ceiling of a train has a period T when...
Text Solution
|
Which of the following physical quantities has neither dimensions nor ...
Text Solution
|
An air bubble of radius 1 mm is located at a depth of 20 cm below wate...
Text Solution
|
Water is filled in a cylindrical container to a height of 3m. The rati...
Text Solution
|
Two homogeneous spheres A and B of masses m and 2m having radii 2a and...
Text Solution
|
Wavelengths belonging to Balmer series lying in the range of 450 nm to...
Text Solution
|
A projectile of mass m is fired frm the surface of the earth at an ang...
Text Solution
|
A ring - shaped tube contains two ideal gases with equal masses and re...
Text Solution
|
A convex lens is kept between the object and screen kept 40 cm. Now a...
Text Solution
|
A metre stick is balanced on a knife edge at its centre. When two coin...
Text Solution
|
Three containers C(1),C(2) and C(3) have water at different temperatur...
Text Solution
|
A carnot engine has efficiency 1//5 . Efficiency becomes 1//3 when tem...
Text Solution
|
A bracket is placed on a horizontal smooth floor and is pulled by a co...
Text Solution
|
The centre of mass of a solid hemisphere of radius 8 cm is x cm from t...
Text Solution
|
A Young's double -slit experiment is performed using monochromatic lig...
Text Solution
|