NEET 2017 | Magnetism and Matter Question 18 | Physics

NEET 2017

MCQ (Single Correct Answer)

-1

If $$\theta $$₁ and $$\theta $$₂ be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip $$\theta $$ is given by

tan²$$\theta $$ = tan²$$\theta $$₁ + tan²$$\theta $$₂

cot²$$\theta $$ = cot²$$\theta $$₁ $$-$$cot²$$\theta $$₂

tan²$$\theta $$ = tan²$$\theta $$₁ $$-$$ tan²$$\theta $$₂

cot²$$\theta $$ = cot²$$\theta $$₁ + cot²$$\theta $$₂

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in equilibrium state. The energy required to rotate it by 60^o is W. Now the torque required to keep the magnet in this new position is

$${W \over {\sqrt 3 }}$$

$$\sqrt 3 W$$

$${{\sqrt 3 W} \over 2}$$

$${{2W} \over {\sqrt 3 }}$$

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

The magnetic susceptibility is negative for

ferromagnetic material only

paramagnetic and ferromagnetic materials

diamagnetic material only

paramagnetic material only

AIPMT 2015

MCQ (Single Correct Answer)

-1

A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire is suspended vertically in a uniform magnetic field of strength 0.2 weber/m². The coil carries a current of 2 A. If the plane of the coil is inclined at an angle of 30^o with the direction of the field, the torque required to keep the coil in stable equilibrium will be

0.24 Nm

0.12 Nm

0.15 Nm

0.20 Nm

PREVIOUS NEXT

NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution