Physics-
General
Easy

Question

A particle of mass m and charge q, moving with velocity V enters Region II normal to the boundary as shown in fig Region II has a uniform magnetic field B perpendicular to the plane of the paper The length of the Region II is l Then

  1. The particle enters Region III only if its velocity V greater than fraction numerator q l B over denominator m end fraction    
  2. Path length of the particle in region II is maximum when velocity V equals fraction numerator q l B over denominator m end fraction    
  3. Time spent in Region II is same for any velocity V as long as the particle returns to Region I    
  4. All the above are correct    

The correct answer is: All the above are correct

Related Questions to study

General
physics-

A small sphere is hung by a string fixed to a wall. The sphere is pushed away from the wall by a stick. The force acting on the sphere are shown in figure. Which of the following statements is wrong?

A small sphere is hung by a string fixed to a wall. The sphere is pushed away from the wall by a stick. The force acting on the sphere are shown in figure. Which of the following statements is wrong?

physics-General
General
Maths-

L t subscript x not stretchy rightwards arrow pi over 2 end subscript fraction numerator sec space x minus tan space x over denominator pi over 2 minus x end fraction

L t subscript x not stretchy rightwards arrow pi over 2 end subscript fraction numerator sec space x minus tan space x over denominator pi over 2 minus x end fraction

Maths-General
General
maths-

Let f : (0, ¥) → R and F(x) = 0xt f (t) dt. If F (x2) = x4 + x5, then r=112f(r2), is equal to

Let f : (0, ¥) → R and F(x) = 0xt f (t) dt. If F (x2) = x4 + x5, then r=112f(r2), is equal to

maths-General
parallel
General
Maths-

L t subscript x not stretchy rightwards arrow pi over 2 end subscript left square bracket sec space 3 x cos space 5 x right square bracket

L t subscript x not stretchy rightwards arrow pi over 2 end subscript left square bracket sec space 3 x cos space 5 x right square bracket

Maths-General
General
chemistry-

The enzyme pepsin hydrolyses:

The enzyme pepsin hydrolyses:

chemistry-General
General
physics-

The magnetic induction at the point O, if the wire carrying current I is

The magnetic induction at the point O, if the wire carrying current I is

physics-General
parallel
General
Maths-

Let f : R →R and g : R →R be continuous functions, then the value of not stretchy integral subscript negative pi divided by 2 end subscript superscript pi text /2 end text end superscript blank (f(x) + f(-x)) (g(x) – g(-x)) dx, is equal to

Let f : R →R and g : R →R be continuous functions, then the value of not stretchy integral subscript negative pi divided by 2 end subscript superscript pi text /2 end text end superscript blank (f(x) + f(-x)) (g(x) – g(-x)) dx, is equal to

Maths-General
General
chemistry-

Ethyl alcohol is also known as:

Ethyl alcohol is also known as:

chemistry-General
General
physics-

A wire is bent in the form of a circular arc with a straight portion AB If the current in the wire is i, then the magnetic induction at O is

A wire is bent in the form of a circular arc with a straight portion AB If the current in the wire is i, then the magnetic induction at O is

physics-General
parallel
General
physics-

The magnetic induction at O due to a current in conductor shaped as shown in fig is

The magnetic induction at O due to a current in conductor shaped as shown in fig is

physics-General
General
physics-

The figure shows a unifrom conducting structure which carries current i with each small square has side a The structure is kept in a uniform magnetic field B Then the magnetic force on the structure will be

The figure shows a unifrom conducting structure which carries current i with each small square has side a The structure is kept in a uniform magnetic field B Then the magnetic force on the structure will be

physics-General
General
physics-

Two long parallel conductors carry currents i subscript 1 end subscript equals 3 A text  and  end text i subscript 2 end subscript equals 3 A both are directed into the plane of paper The magnitude of resultant magnetic field at point ‘P; is

Two long parallel conductors carry currents i subscript 1 end subscript equals 3 A text  and  end text i subscript 2 end subscript equals 3 A both are directed into the plane of paper The magnitude of resultant magnetic field at point ‘P; is

physics-General
parallel
General
chemistry-

What amount of bromine will be required to convert 2 g of phenol into 2, 4, 6-tribromo phenol?

What amount of bromine will be required to convert 2 g of phenol into 2, 4, 6-tribromo phenol?

chemistry-General
General
physics-

A wire bent in the form a right angled triangle PQR, carries a current 1 A It is placed in a region of a uniform magnetic field B= 0.2T If PR = 1m, the net force on the wire is

A wire bent in the form a right angled triangle PQR, carries a current 1 A It is placed in a region of a uniform magnetic field B= 0.2T If PR = 1m, the net force on the wire is

physics-General
General
physics-

A current i A = 2 be flowing in each part of a wire frame as shown in fig The frame is a combination of two equilateral triangles ACD and CDE of side 1m It is placed in uniform magnetic field B=4T acting perpendicular to the plane of frame The magnitude of magnetic force acting on the frame is

A current i A = 2 be flowing in each part of a wire frame as shown in fig The frame is a combination of two equilateral triangles ACD and CDE of side 1m It is placed in uniform magnetic field B=4T acting perpendicular to the plane of frame The magnitude of magnetic force acting on the frame is

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.