Academic Experts Solutions for Chapter: Magnetism and Matter, Exercise 5: Bar Magnet

Author:Academic Experts

Academic Experts Physics Solutions for Exercise - Academic Experts Solutions for Chapter: Magnetism and Matter, Exercise 5: Bar Magnet

Attempt the practice questions on Chapter 2: Magnetism and Matter, Exercise 5: Bar Magnet with hints and solutions to strengthen your understanding. Practice Book for MHT-CET Physics (Magnetism and Electromagnetic Induction) solutions are prepared by Experienced Embibe Experts.

Questions from Academic Experts Solutions for Chapter: Magnetism and Matter, Exercise 5: Bar Magnet with Hints & Solutions

HARD
MHT-CET
IMPORTANT

A dip needle lies initially in the magnetic meridian when it shows an angle of dip θ at a place. The dip circle is rotated through an angle x in the horizontal plane and then it shows an angle of dip θ'. Then, tan θ'tan θis,

EASY
MHT-CET
IMPORTANT

A dip needle vibrates in the vertical plane perpendicular to the magnetic meridian. The time period of vibration is found to be 2 s. The same needle is then allowed to vibrate in the horizontal plane and the time period is again found to be 2 s. Then the angle of dip is

MEDIUM
MHT-CET
IMPORTANT

A magnet is suspended in such a way that it oscillates in the horizontal plane. It makes 20 oscillations per minute at a place where dip angle is 30° and 15 oscillations per minute at a place where dip angle is 60°. The ratio of the total earth's magnetic field at the two places is,

MEDIUM
MHT-CET
IMPORTANT

The true value of angle of dip at a place is 60°. The apparent dip in a plane inclined at an angle of 30° with magnetic meridian is 

HARD
MHT-CET
IMPORTANT

If ϕ1 and ϕ2 be the angles of dip observed in two vertical planes at right angles to each other and ϕ be the true angle of dip, then

HARD
MHT-CET
IMPORTANT

A dip circle is adjusted so that its needle moves freely in the magnetic meridian. In this position, the angle of dip is 40°. Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30° with the magnetic meridian. In this position the needle will dip by an angle

EASY
MHT-CET
IMPORTANT

If the angle of dip at two places are 30° and 45° respectively, then the ratio of horizontal component of earth's magnetic field at two places will be 

EASY
MHT-CET
IMPORTANT

The value of earth magnetic field BH=0.3 G. In this magnetic field a magnet is oscillating with 5 oscillations min-1. To increase the oscillation of magnet upto 10 oscillations min-1, the value of earth magnetic field is increased by