16569 + Interview Questions in Physics

1.	A lens which has two spherical surfaces both bulging inside is called
Answer» A lens which has two spherical surfaces both bulging inside is called

Discussion

2.	The bob of a simple pendulum is imparted a velocity 5 ms–1 when it is at its mean position. To what maximum vertical height will it rise on reaching to its extreme position if 60% of its energy is lost in overcoming friction of air? (Take g = 10 ms–2)
Answer» The bob of a simple pendulum is imparted a velocity 5 ms^–1 when it is at its mean position. To what maximum vertical height will it rise on reaching to its extreme position if 60% of its energy is lost in overcoming friction of air? (Take g = 10 ms^–2)

Discussion

3.	Tube in tube in only two branches not other why
Answer» Tube in tube in only two branches not other why

Discussion

4.	why electric line can not form closed loops as magnetic lines?
Answer» why electric line can not form closed loops as magnetic lines?

Discussion

5.	22.A prism of angle 10^° is used to see dispersion of light. The refractive index for red and violet colour of light is 1.51 and 1.52, respectively. What will the dispersive power of prism?
Answer» 22.A prism of angle 10^° is used to see dispersion of light. The refractive index for red and violet colour of light is 1.51 and 1.52, respectively. What will the dispersive power of prism?

Discussion

6.	Fuels are
Answer» Fuels are

Discussion

7.	Two group of people debated about "Dams". Pick out the statement which were debated for and against the topic: 1. Social problems because they displace large number of peasants and tribal without adequate compensation. 2. Economic problems because construction of dams swallow up huge amount of public money. 3. Dams are used to generate electricity. 4. Dams are used to store large amount of water, which can be used later for irrigation. 5. Indira Gandhi canal has brought greenery to considerable areas of Rajasthan. 6. Environmental problems because they contribute enormously to deforestation and the loss of biological diversity.
Answer» Two group of people debated about "Dams". Pick out the statement which were debated for and against the topic: 1. Social problems because they displace large number of peasants and tribal without adequate compensation. 2. Economic problems because construction of dams swallow up huge amount of public money. 3. Dams are used to generate electricity. 4. Dams are used to store large amount of water, which can be used later for irrigation. 5. Indira Gandhi canal has brought greenery to considerable areas of Rajasthan. 6. Environmental problems because they contribute enormously to deforestation and the loss of biological diversity.

7.

Two group of people debated about "Dams". Pick out the statement which were debated for and against the topic: 1. Social problems because they displace large number of peasants and tribal without adequate compensation. 2. Economic problems because construction of dams swallow up huge amount of public money. 3. Dams are used to generate electricity. 4. Dams are used to store large amount of water, which can be used later for irrigation. 5. Indira Gandhi canal has brought greenery to considerable areas of Rajasthan. 6. Environmental problems because they contribute enormously to deforestation and the loss of biological diversity.

Answer»

Two group of people debated about "Dams". Pick out the statement which were debated for and against the topic:

1. Social problems because they displace large number of peasants and tribal without adequate compensation.

2. Economic problems because construction of dams swallow up huge amount of public money.

3. Dams are used to generate electricity.

4. Dams are used to store large amount of water, which can be used later for irrigation.

5. Indira Gandhi canal has brought greenery to considerable areas of Rajasthan.

6. Environmental problems because they contribute enormously to deforestation and the loss of biological diversity.

Discussion

8.	A heater coil is rated at 100w_200v.it is cut into two identical parts.both parts are connected together in parallel with same source of 200v .. calculate the energy liberated per second in new combination..
Answer» A heater coil is rated at 100w_200v.it is cut into two identical parts.both parts are connected together in parallel with same source of 200v .. calculate the energy liberated per second in new combination..

Discussion

9.	3.A 5kg brick of dimensions 20cm × 10cm × 8cm is lying on its largest base.it is now made to stand vertical .work done is (g=10) 3
Answer» 3.A 5kg brick of dimensions 20cm × 10cm × 8cm is lying on its largest base.it is now made to stand vertical .work done is (g=10) 3

Discussion

10.	State the properties of a Magnet.
Answer» State the properties of a Magnet.

Discussion

11.	An object of size 7 cm is kept 27 cm away from a convex mirror. If the focal length of the mirror is 15 cm, find the position, nature and size of the image.
Answer» An object of size 7 cm is kept 27 cm away from a convex mirror. If the focal length of the mirror is 15 cm, find the position, nature and size of the image.

Discussion

12.	A factory is served by a 220 V supply line. In a circuit protected by a fuse marked 10 A, the maximum number of 100 W lamps in parallel that can be turned on is
Answer» A factory is served by a $220 V$ supply line. In a circuit protected by a fuse marked $10 A$ , the maximum number of $100 W$ lamps in parallel that can be turned on is

Discussion

13.	When are we going to use H2 as fuel for vehicles?
Answer» When are we going to use $H_{2}$ as fuel for vehicles?

Discussion

14.	The mass density of a planet of radius R varies with the distance r from its centre as ρ(r)=ρ0(1−r2R2). Then the gravitational field is maximum at:
Answer» The mass density of a planet of radius $R$ varies with the distance $r$ from its centre as $ρ (r) = ρ_{0} (1 - \frac{r^{2}}{R^{2}}) .$ Then the gravitational field is maximum at:

Discussion

15.	The height of the point vertically above the earth's surface at which acceleration due to gravity becomes 1% of its value at the surface of earth is(R= radius of earth)
Answer» The height of the point vertically above the earth's surface at which acceleration due to gravity becomes $1$ % of its value at the surface of earth is $(R =$ radius of earth $)$

Discussion

16.	7 audio cassettes and 3 video cassettes cost Rs.1110, while 5 audio cassettes and 4 video cassettes cost Rs.1350. Find the cost of an audio cassette and a video cassette.
Answer» 7 audio cassettes and 3 video cassettes cost Rs.1110, while 5 audio cassettes and 4 video cassettes cost Rs.1350. Find the cost of an audio cassette and a video cassette.

Discussion

17.	The equation of spherical progressivewave is?
Answer» The equation of spherical progressivewave is?

Discussion

18.	What should we do to reduce the amount of effort needed to lift something using a lever?
Answer» What should we do to reduce the amount of effort needed to lift something using a lever?

Discussion

19.	The image formed by a plane mirror is : (a) erect and diminished (b) erect and enlarged (c) inverted and of same size (d) erect and of same size.
Answer» The image formed by a plane mirror is : (a) erect and diminished (b) erect and enlarged (c) inverted and of same size (d) erect and of same size.

19.

The image formed by a plane mirror is : (a) erect and diminished (b) erect and enlarged (c) inverted and of same size (d) erect and of same size.

Answer»

The image formed by a plane mirror is :

(a) erect and diminished

(b) erect and enlarged

(c) inverted and of same size

(d) erect and of same size.

Discussion

20.	Q 39/180 A plano-convex lens fits exactly into aplano-concave lens. Their plane surfaces are parallelto each other. If lenses are made of different materialsof refractive indices μ 1 and μ 2 and R is the radius ofcurvature of the curved surface of the lenses, then thefocal length of the combination is(Hi-H2)
Answer» Q 39/180 A plano-convex lens fits exactly into aplano-concave lens. Their plane surfaces are parallelto each other. If lenses are made of different materialsof refractive indices μ 1 and μ 2 and R is the radius ofcurvature of the curved surface of the lenses, then thefocal length of the combination is(Hi-H2)

Discussion

21.	What name is given to the heat energy obtained from the hot rocks inside the earth ?
Answer» What name is given to the heat energy obtained from the hot rocks inside the earth ?

21.

What name is given to the heat energy obtained from the hot rocks inside the earth ?

Answer»

What name is given to the heat energy obtained from the hot rocks inside the earth ?

Discussion

22.	How does the action of a convex lens differ from that of a concave lens on a parallel beam of light incident on them ? Draw diagrams to illustrate your answer.
Answer» How does the action of a convex lens differ from that of a concave lens on a parallel beam of light incident on them ? Draw diagrams to illustrate your answer.

Discussion

23.	With a concave mirror, an object is placed at a distance x1 from the principal focus away from the mirror, on the principal axis. The image is formed at a distance x2 from the principal focus also away from the mirror. The focal length of the mirror is
Answer» With a concave mirror, an object is placed at a distance $x_{1}$ from the principal focus away from the mirror, on the principal axis. The image is formed at a distance $x_{2}$ from the principal focus also away from the mirror. The focal length of the mirror is

Discussion

24.	A ray of light after refraction through a convex lens emerges parallel to the principal axis. (a) Draw a ray diagram to show it. (b) The incident ray passes through a point F on the principal axis. Name the point F.
Answer» A ray of light after refraction through a convex lens emerges parallel to the principal axis. (a) Draw a ray diagram to show it. (b) The incident ray passes through a point F on the principal axis. Name the point F.

Discussion

25.	The energy (ineV) possessed by a neon atom at 27'C is 1) 1.72* 10-3 2)4.7510-4 3)3.8810-2 4)3.27*10-5
Answer» The energy (ineV) possessed by a neon atom at 27'C is 1) 1.72* 10-3 2)4.7510-4 3)3.8810-2 4)3.27*10-5

Discussion

26.	A ray of light passes from air to glass. No refraction of light occurs if the ray of light hits the boundary of medium of glass at an angle of
Answer» A ray of light passes from air to glass. No refraction of light occurs if the ray of light hits the boundary of medium of glass at an angle of

Discussion

27.	Statement I: Virtual image cannot be projected on a screen.Statement II: Divergent rays cannot form a real image.
Answer» Statement I: Virtual image cannot be projected on a screen. Statement II: Divergent rays cannot form a real image.

Discussion

28.	A light ray changes enters Medium 2 from Medium 1. What would be the deviation if the refractive index of Medium 1 and Medium 2 are same?
Answer» A light ray changes enters Medium 2 from Medium 1. What would be the deviation if the refractive index of Medium 1 and Medium 2 are same?

Discussion

29.	.If the mag. of dispersive power of two lenses are 0.024 and 0.036 . Then their focal lengths will be for abberation free combination.A. 30cm, -40cmB. 30cm, -45cmC. 10cm, 30cmD. 20cm, -35cm
Answer» .If the mag. of dispersive power of two lenses are 0.024 and 0.036 . Then their focal lengths will be for abberation free combination. A. 30cm, -40cm B. 30cm, -45cm C. 10cm, 30cm D. 20cm, -35cm

29.

.If the mag. of dispersive power of two lenses are 0.024 and 0.036 . Then their focal lengths will be for abberation free combination.A. 30cm, -40cmB. 30cm, -45cmC. 10cm, 30cmD. 20cm, -35cm

Answer»

.If the mag. of dispersive power of two lenses are 0.024 and 0.036 . Then their focal lengths will be for abberation free combination.

A. 30cm, -40cm

B. 30cm, -45cm

C. 10cm, 30cm

D. 20cm, -35cm

Discussion

30.	What are the products of electrolysis of aq. CH3COONa at Pt electrodes?
Answer» What are the products of electrolysis of aq. CH3COONa at Pt electrodes?

Discussion

31.	A current of 0.5 A flows through a 60 W lamp. The total charge passing through it in two hours will be __ C.
Answer» A current of 0.5 A flows through a 60 W lamp. The total charge passing through it in two hours will be __ C.

Discussion

32.	Floating generators are used in the sea to harness ___ energy.
Answer» Floating generators are used in the sea to harness ___ energy.

Discussion

33.	(a) Define magnetic field lines. Describe an activity to draw a magnetic filed line outside a bar magnet from one pole to another pole. (b) Explain why, a freely suspended magnet always points in the north-south direction.
Answer» (a) Define magnetic field lines. Describe an activity to draw a magnetic filed line outside a bar magnet from one pole to another pole. (b) Explain why, a freely suspended magnet always points in the north-south direction.

33.

(a) Define magnetic field lines. Describe an activity to draw a magnetic filed line outside a bar magnet from one pole to another pole. (b) Explain why, a freely suspended magnet always points in the north-south direction.

Answer»

(a) Define magnetic field lines. Describe an activity to draw a magnetic filed line outside a bar magnet from one pole to another pole.

(b) Explain why, a freely suspended magnet always points in the north-south direction.

Discussion

34.	What is the equivalent resistance between A and B in the following circuit?
Answer» What is the equivalent resistance between $A$ and $B$ in the following circuit?

Discussion

35.	(a) What is total internal reflection? (b) State two conditions necessary for the total internal reflection to occur. (c) Draw diagrams to illustrate the total internal reflection.
Answer» (a) What is total internal reflection? (b) State two conditions necessary for the total internal reflection to occur. (c) Draw diagrams to illustrate the total internal reflection.

35.

(a) What is total internal reflection? (b) State two conditions necessary for the total internal reflection to occur. (c) Draw diagrams to illustrate the total internal reflection.

Answer»

(a) What is total internal reflection?

(b) State two conditions necessary for the total internal reflection to occur.

(c) Draw diagrams to illustrate the total internal reflection.

Discussion

36.	Discuss the nature of centrifugal force.
Answer» Discuss the nature of centrifugal force.

Discussion

37.	26. weight can be negative or not?
Answer» 26. weight can be negative or not?

Discussion

38.	A thin wire is bent in the form of a square of side2 cm carries a current of 2 A. The squaremagnetic field at the centre of the due to one sideis nearly(1) 2.8 × 10–5 T (2) 2.5 × 10–4 T(3) 8 × 10–3 T (4) 1.4 × 10–3 T
Answer» A thin wire is bent in the form of a square of side 2 cm carries a current of 2 A. The square magnetic field at the centre of the due to one side is nearly (1) 2.8 × 10–5 T (2) 2.5 × 10–4 T (3) 8 × 10–3 T (4) 1.4 × 10–3 T

Discussion

39.	A parachute is tied to a stone (A). Initially a man was seated on the parachute when it made 60∘ with the horizontal plane. After sometime the man ties the rope to himself and then jumps off from the parachute. At some point C man makes 30∘ with the horizontal plane. From B, an imaginary line is drawn perpendicular to the ground so that it cuts AC (in the fig) in D. Distance BD is……………………………m __
Answer» A parachute is tied to a stone (A). Initially a man was seated on the parachute when it made $60^{\circ}$ with the horizontal plane. After sometime the man ties the rope to himself and then jumps off from the parachute. At some point C man makes $30^{\circ}$ with the horizontal plane. From B, an imaginary line is drawn perpendicular to the ground so that it cuts AC (in the fig) in D. Distance BD is……………………………m __

39.

A parachute is tied to a stone (A). Initially a man was seated on the parachute when it made 60∘ with the horizontal plane. After sometime the man ties the rope to himself and then jumps off from the parachute. At some point C man makes 30∘ with the horizontal plane. From B, an imaginary line is drawn perpendicular to the ground so that it cuts AC (in the fig) in D. Distance BD is……………………………m __

Answer»

A parachute is tied to a stone (A). Initially a man was seated on the parachute when it made $60^{\circ}$ with the horizontal plane. After sometime the man ties the rope to himself and then jumps off from the parachute. At some point C man makes $30^{\circ}$ with the horizontal plane. From B, an imaginary line is drawn perpendicular to the ground so that it cuts AC (in the fig) in D. Distance BD is……………………………m

__

Discussion

40.	The diagram alongside shows a lens as a combination of a glass slab and two prisms. (i) Name the lens formed by the combination. (ii) What is the line XX' called ? (iii) Complete the path of the incident ray AB after passing through the lens. (iv) The final emergent ray either meets XX' at a point or apppears to come from a point on XX'. Label it as F. What is this point called ?
Answer» The diagram alongside shows a lens as a combination of a glass slab and two prisms. (i) Name the lens formed by the combination. (ii) What is the line XX' called ? (iii) Complete the path of the incident ray AB after passing through the lens. (iv) The final emergent ray either meets XX' at a point or apppears to come from a point on XX'. Label it as F. What is this point called ?

40.

The diagram alongside shows a lens as a combination of a glass slab and two prisms. (i) Name the lens formed by the combination. (ii) What is the line XX' called ? (iii) Complete the path of the incident ray AB after passing through the lens. (iv) The final emergent ray either meets XX' at a point or apppears to come from a point on XX'. Label it as F. What is this point called ?

Answer»

The diagram alongside shows a lens as a combination of a glass slab and two prisms.

(i) Name the lens formed by the combination.

(ii) What is the line XX' called ?

(iii) Complete the path of the incident ray AB after passing through the lens.

(iv) The final emergent ray either meets XX' at a point or apppears to come from a point on XX'. Label it as F. What is this point called ?

Discussion

41.	Radius of current carrying coil s 'R'. If fractional decreases in field value with respect to centre of the coil for a near by axial point is 1% then find axial position of that point.
Answer» Radius of current carrying coil s 'R'. If fractional decreases in field value with respect to centre of the coil for a near by axial point is 1% then find axial position of that point.

Discussion

42.	Which international treaty was designed to reduce greenhouse gas emissions?
Answer» Which international treaty was designed to reduce greenhouse gas emissions?

Discussion

43.	27 The figure shows an idealized plane truss. If a horizontal force of 300 N is applied at point A, then the magnitude of the force produced in member CD isN
Answer» 27 The figure shows an idealized plane truss. If a horizontal force of 300 N is applied at point A, then the magnitude of the force produced in member CD isN

Discussion

44.	Explain with an experiment principle of Electromagnetic induction? Which law will gives the direction of electric current? [5 MARKS]
Answer» Explain with an experiment principle of Electromagnetic induction? Which law will gives the direction of electric current? [5 MARKS]

Discussion

45.	A charge Q us divided into 2 parts q and Q-q.If the coulombic repulsion when they are seperated is to be maximum ratio of Q/q
Answer» A charge Q us divided into 2 parts q and Q-q.If the coulombic repulsion when they are seperated is to be maximum ratio of Q/q

Discussion

46.	A toy train of mass 1 kg moves with a constant velocity of 8 m/s, when connected to a battery of 8 volts for 4 s. is the current in the circuit .
Answer» A toy train of mass 1 kg moves with a constant velocity of 8 m/s, when connected to a battery of 8 volts for 4 s. is the current in the circuit .

Discussion

47.	What happens if the reverberation time is too high?
Answer» What happens if the reverberation time is too high?

Discussion

48.	(a) Name a device which helps to maintain a potential difference across the ends of a conductor.(b) What is meant by saying that the potential difference between two points is 1 V?(c) Define Ohm's law. Write an expression for it.(d) What is the unit of resistance?(e) When the potential difference between the terminals of an electric heater is 110 V, a current of 5 A flows through it. What current will flow through the heater if the potential difference is increased to 220 V? What is the resistance of heater?
Answer» (a) Name a device which helps to maintain a potential difference across the ends of a conductor. (b) What is meant by saying that the potential difference between two points is 1 V? (c) Define Ohm's law. Write an expression for it. (d) What is the unit of resistance? (e) When the potential difference between the terminals of an electric heater is 110 V, a current of 5 A flows through it. What current will flow through the heater if the potential difference is increased to 220 V? What is the resistance of heater?

Discussion

49.	13.A long thin walled pipe of radius R carries a current I along its length. The current density is uniform over the circumference of the pipe. The magnetic field at the center of the pipe due to quarter portion of the pipe is
Answer» 13.A long thin walled pipe of radius R carries a current I along its length. The current density is uniform over the circumference of the pipe. The magnetic field at the center of the pipe due to quarter portion of the pipe is

Discussion

50.	ntA thin non conducting ring of mass m having total charge q can rotate freely about its osn axis. Initially, when the ring is stationery, a magnetic field B directed perpendicular to the plane is switched on . Find the angular velocity acquired by the ring . Find the induced magnetjc moment.n
Answer» ntA thin non conducting ring of mass m having total charge q can rotate freely about its osn axis. Initially, when the ring is stationery, a magnetic field B directed perpendicular to the plane is switched on . Find the angular velocity acquired by the ring . Find the induced magnetjc moment.n

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A lens which has two spherical surfaces both bulging inside is called

The bob of a simple pendulum is imparted a velocity 5 ms–1 when it is at its mean position. To what maximum vertical height will it rise on reaching to its extreme position if 60% of its energy is lost in overcoming friction of air? (Take g = 10 ms–2)

Tube in tube in only two branches not other why

why electric line can not form closed loops as magnetic lines?

22.A prism of angle 10^° is used to see dispersion of light. The refractive index for red and violet colour of light is 1.51 and 1.52, respectively. What will the dispersive power of prism?

Fuels are

A heater coil is rated at 100w_200v.it is cut into two identical parts.both parts are connected together in parallel with same source of 200v .. calculate the energy liberated per second in new combination..

3.A 5kg brick of dimensions 20cm × 10cm × 8cm is lying on its largest base.it is now made to stand vertical .work done is (g=10) 3

State the properties of a Magnet.

An object of size 7 cm is kept 27 cm away from a convex mirror. If the focal length of the mirror is 15 cm, find the position, nature and size of the image.

A factory is served by a 220 V supply line. In a circuit protected by a fuse marked 10 A, the maximum number of 100 W lamps in parallel that can be turned on is

When are we going to use H2 as fuel for vehicles?

The mass density of a planet of radius R varies with the distance r from its centre as ρ(r)=ρ0(1−r2R2). Then the gravitational field is maximum at:

The height of the point vertically above the earth's surface at which acceleration due to gravity becomes 1% of its value at the surface of earth is(R= radius of earth)

7 audio cassettes and 3 video cassettes cost Rs.1110, while 5 audio cassettes and 4 video cassettes cost Rs.1350. Find the cost of an audio cassette and a video cassette.

The equation of spherical progressivewave is?

What should we do to reduce the amount of effort needed to lift something using a lever?

The image formed by a plane mirror is : (a) erect and diminished (b) erect and enlarged (c) inverted and of same size (d) erect and of same size.

What name is given to the heat energy obtained from the hot rocks inside the earth ?

How does the action of a convex lens differ from that of a concave lens on a parallel beam of light incident on them ? Draw diagrams to illustrate your answer.

With a concave mirror, an object is placed at a distance x1 from the principal focus away from the mirror, on the principal axis. The image is formed at a distance x2 from the principal focus also away from the mirror. The focal length of the mirror is

A ray of light after refraction through a convex lens emerges parallel to the principal axis. (a) Draw a ray diagram to show it. (b) The incident ray passes through a point F on the principal axis. Name the point F.

The energy (ineV) possessed by a neon atom at 27'C is 1) 1.72* 10-3 2)4.75*10-4 3)3.88*10-2 4)3.27*10-5

A ray of light passes from air to glass. No refraction of light occurs if the ray of light hits the boundary of medium of glass at an angle of

Statement I: Virtual image cannot be projected on a screen.Statement II: Divergent rays cannot form a real image.

A light ray changes enters Medium 2 from Medium 1. What would be the deviation if the refractive index of Medium 1 and Medium 2 are same?

.If the mag. of dispersive power of two lenses are 0.024 and 0.036 . Then their focal lengths will be for abberation free combination.A. 30cm, -40cmB. 30cm, -45cmC. 10cm, 30cmD. 20cm, -35cm

What are the products of electrolysis of aq. CH3COONa at Pt electrodes?

A current of 0.5 A flows through a 60 W lamp. The total charge passing through it in two hours will be __ C.

Floating generators are used in the sea to harness ___ energy.

(a) Define magnetic field lines. Describe an activity to draw a magnetic filed line outside a bar magnet from one pole to another pole. (b) Explain why, a freely suspended magnet always points in the north-south direction.

What is the equivalent resistance between A and B in the following circuit?

(a) What is total internal reflection? (b) State two conditions necessary for the total internal reflection to occur. (c) Draw diagrams to illustrate the total internal reflection.

Discuss the nature of centrifugal force.

26. weight can be negative or not?

A thin wire is bent in the form of a square of side2 cm carries a current of 2 A. The squaremagnetic field at the centre of the due to one sideis nearly(1) 2.8 × 10–5 T (2) 2.5 × 10–4 T(3) 8 × 10–3 T (4) 1.4 × 10–3 T

Radius of current carrying coil s 'R'. If fractional decreases in field value with respect to centre of the coil for a near by axial point is 1% then find axial position of that point.

Which international treaty was designed to reduce greenhouse gas emissions?

27 The figure shows an idealized plane truss. If a horizontal force of 300 N is applied at point A, then the magnitude of the force produced in member CD isN

Explain with an experiment principle of Electromagnetic induction? Which law will gives the direction of electric current? [5 MARKS]

A charge Q us divided into 2 parts q and Q-q.If the coulombic repulsion when they are seperated is to be maximum ratio of Q/q

A toy train of mass 1 kg moves with a constant velocity of 8 m/s, when connected to a battery of 8 volts for 4 s. is the current in the circuit .

What happens if the reverberation time is too high?

13.A long thin walled pipe of radius R carries a current I along its length. The current density is uniform over the circumference of the pipe. The magnetic field at the center of the pipe due to quarter portion of the pipe is

ntA thin non conducting ring of mass m having total charge q can rotate freely about its osn axis. Initially, when the ring is stationery, a magnetic field B directed perpendicular to the plane is switched on . Find the angular velocity acquired by the ring . Find the induced magnetjc moment.n

The energy (ineV) possessed by a neon atom at 27'C is 1) 1.72* 10-3 2)4.7510-4 3)3.8810-2 4)3.27*10-5