16569 + Interview Questions in Physics

1.	What do you mean by moment of a force?
Answer» What do you mean by moment of a force?

Discussion

2.	What is the expansion of "Wi-Fi"?
Answer» What is the expansion of "Wi-Fi"?

Discussion

3.	A convex lens produces an inverted image magnified three times of an object placed at a distance of 15 col from it. Calculate focal length of the lens.
Answer» A convex lens produces an inverted image magnified three times of an object placed at a distance of 15 col from it. Calculate focal length of the lens.

Discussion

4.	Why do we always take the north pole of the compass as a reference point while plotting the magnetic field of a magnet?? Taking the south pole as a reference point we can even plot the field outside a bar magnet from south to north..
Answer» Why do we always take the north pole of the compass as a reference point while plotting the magnetic field of a magnet?? Taking the south pole as a reference point we can even plot the field outside a bar magnet from south to north..

Discussion

5.	What is magnetic permeability
Answer» What is magnetic permeability

Discussion

6.	1) Is light a ray, a wave or particle? Comment.
Answer» 1) Is light a ray, a wave or particle? Comment.

Discussion

7.	What is meant by "sustainable management"? Why is reuse considered better than recycling?
Answer» What is meant by "sustainable management"? Why is reuse considered better than recycling?

Discussion

8.	Fill in the blanks with appropriate homophones. The ________ cake with pink frosting was served to the guests at the party. A weak electric ________ was passed.
Answer» Fill in the blanks with appropriate homophones. The ________ cake with pink frosting was served to the guests at the party. A weak electric ________ was passed.

8.

Fill in the blanks with appropriate homophones. The cake with pink frosting was served to the guests at the party. A weak electric was passed.

Answer»

Fill in the blanks with appropriate homophones.

The ________ cake with pink frosting was served to the guests at the party.

A weak electric ________ was passed.

Discussion

9.	Where should an object be placed in front of a convex lens so as to obtain its virtual, erect and magnified image ?
Answer» Where should an object be placed in front of a convex lens so as to obtain its virtual, erect and magnified image ?

Discussion

10.	The angle of reflection is always ______ the angle of incidence.
Answer» The angle of reflection is always ______ the angle of incidence.

Discussion

11.	Which one of the following is the use of concave lens
Answer» Which one of the following is the use of concave lens

Discussion

12.	The equivalent resistance between points A and B in the circuit shown is
Answer» The equivalent resistance between points A and B in the circuit shown is

Discussion

13.	During a race, a man weighing 60 kg is accelerating on a levelled track and acquired a velocity thrice his initial velocity. What was the change in his potential energy?
Answer» During a race, a man weighing 60 kg is accelerating on a levelled track and acquired a velocity thrice his initial velocity. What was the change in his potential energy?

Discussion

14.	A boy hits the football with a large force, the action force acts on the football and same magnitude reaction force acts on the boy. What can be inferred from the statement?
Answer» A boy hits the football with a large force, the action force acts on the football and same magnitude reaction force acts on the boy. What can be inferred from the statement?

Discussion

15.	A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of the magnetic field at a point will be North to South when the point is ____
Answer» A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of the magnetic field at a point will be North to South when the point is ____

15.

A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of the magnetic field at a point will be North to South when the point is ____

Answer»

A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of the magnetic field at a point will be North to South when the point is ____

Discussion

16.	In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.
Answer» In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.

Discussion

17.	Lyophilic sols are more stable than lyophobic because
Answer» Lyophilic sols are more stable than lyophobic because

Discussion

18.	Comment on the statement 'loudness of sound is of a subjective nature, while intensity is of objective nature.'
Answer» Comment on the statement 'loudness of sound is of a subjective nature, while intensity is of objective nature.'

Discussion

19.	A rod of length 10m is hinged at the centre.A force of 20 N is applied at one end. At what distance should another force of 25 N be applied from the centre so that the rod is in equilibrium?
Answer» A rod of length 10m is hinged at the centre.A force of 20 N is applied at one end. At what distance should another force of 25 N be applied from the centre so that the rod is in equilibrium?

Discussion

20.	Mn and Mp represent mass of neutron and proton respectively. If an element having nuclear mass M has N-neutron and Z-proton, then the correct relation will be
Answer» $M_{n}$ and $M_{p}$ represent mass of neutron and proton respectively. If an element having nuclear mass M has N-neutron and Z-proton, then the correct relation will be

Discussion

21.	Among the given options, wavelength of which colour light is the shortest?
Answer» Among the given options, wavelength of which colour light is the shortest?

Discussion

22.	An electric refrigerator rated 400W operates 8 hours per day. What is the cost of the energy to operate it for one month at a rate of Rs 5.00 per unit.
Answer» An electric refrigerator rated 400W operates 8 hours per day. What is the cost of the energy to operate it for one month at a rate of Rs 5.00 per unit.

Discussion

23.	Critical angle of light passing from glass to air is minimum for ___ colour.
Answer» Critical angle of light passing from glass to air is minimum for ___ colour.

Discussion

24.	Why is a SOLENOID made by winding wire over a NONCONDUCTING cylindrical tube ?
Answer» Why is a SOLENOID made by winding wire over a NONCONDUCTING cylindrical tube ?

Discussion

25.	Question 24 What is electrical resistivity? In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 5 A. The reading of the ammeter decreases to half when the length of the wire is doubled. Why?
Answer» Question 24 What is electrical resistivity? In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 5 A. The reading of the ammeter decreases to half when the length of the wire is doubled. Why?

Discussion

26.	Give two properties of ultraviolet radiations which differ from the visible light.
Answer» Give two properties of ultraviolet radiations which differ from the visible light.

Discussion

27.	A ray of white light is passed through a glass prism and spectrum is obtained on a screen. (a) Name the seven colours of the spectrum in order. (b) Do the colours have the same width in the spectrum ? (c) Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least ?
Answer» A ray of white light is passed through a glass prism and spectrum is obtained on a screen. (a) Name the seven colours of the spectrum in order. (b) Do the colours have the same width in the spectrum ? (c) Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least ?

27.

A ray of white light is passed through a glass prism and spectrum is obtained on a screen. (a) Name the seven colours of the spectrum in order. (b) Do the colours have the same width in the spectrum ? (c) Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least ?

Answer»

A ray of white light is passed through a glass prism and spectrum is obtained on a screen.

(a) Name the seven colours of the spectrum in order.

(b) Do the colours have the same width in the spectrum ?

(c) Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least ?

Discussion

28.	To avoid energy crisis, energy need to be
Answer» To avoid energy crisis, energy need to be

Discussion

29.	Work done is related to the applied force as follows
Answer» Work done is related to the applied force as follows

Discussion

30.	A force of 10 N acts on a mass of 5 kg for 5s. If the body is initially at rest, what is the final velocity of the body?
Answer» A force of 10 N acts on a mass of 5 kg for 5s. If the body is initially at rest, what is the final velocity of the body?

Discussion

31.	An electric circuit consisting of a 0.5 m long nichrome wire XY, an ameter, a voltmeter four cells of 1.5 V each and a plug key was set up. (i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY. (ii) Folloiwng graph was plotted between V and I values: What would be the values of VI ratios when hte potential difference is 0.8 V, 1.2 V and 1.6 vrespectively ? What conclusion do you draw from these values? What would be hte values of VI ratios when the potential differece is 0.8 V, 1.2 V and 1.6 V respectively what conclusion do you draw from these values? (iii) What is the resistance of the wire?
Answer» An electric circuit consisting of a 0.5 m long nichrome wire XY, an ameter, a voltmeter four cells of 1.5 V each and a plug key was set up. (i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY. (ii) Folloiwng graph was plotted between V and I values: What would be the values of $\frac{V}{I}$ ratios when hte potential difference is 0.8 V, 1.2 V and 1.6 vrespectively ? What conclusion do you draw from these values? What would be hte values of $\frac{V}{I}$ ratios when the potential differece is 0.8 V, 1.2 V and 1.6 V respectively what conclusion do you draw from these values? (iii) What is the resistance of the wire?

31.

An electric circuit consisting of a 0.5 m long nichrome wire XY, an ameter, a voltmeter four cells of 1.5 V each and a plug key was set up. (i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY. (ii) Folloiwng graph was plotted between V and I values: What would be the values of VI ratios when hte potential difference is 0.8 V, 1.2 V and 1.6 vrespectively ? What conclusion do you draw from these values? What would be hte values of VI ratios when the potential differece is 0.8 V, 1.2 V and 1.6 V respectively what conclusion do you draw from these values? (iii) What is the resistance of the wire?

Answer»

An electric circuit consisting of a 0.5 m long nichrome wire XY, an ameter, a voltmeter four cells of 1.5 V each and a plug key was set up.
(i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY.
(ii) Folloiwng graph was plotted between V and I values:
What would be the values of $\frac{V}{I}$ ratios when hte potential difference is 0.8 V, 1.2 V and 1.6 vrespectively ?
What conclusion do you draw from these values?

What would be hte values of $\frac{V}{I}$ ratios when the potential differece is 0.8 V, 1.2 V and 1.6 V respectively what conclusion do you draw from these values?
(iii) What is the resistance of the wire?

Discussion

32.	Geothermal energy is produced by the : (a) fission of radioactive materials (b) burning of coal inside the coal mines (c) combustion of natural gas deep inside the earth (d) fusion of radioactive substances
Answer» Geothermal energy is produced by the : (a) fission of radioactive materials (b) burning of coal inside the coal mines (c) combustion of natural gas deep inside the earth (d) fusion of radioactive substances

Discussion

33.	How is presbyopia different from hypermetropia?
Answer» How is presbyopia different from hypermetropia?

Discussion

34.	(a) Name the particles which are responsible for the flow of current in a metallic wire. (b) Explain the flow of current in a metallic wire on the basis of movement of the particles named by you above in part(a) (c) What is the cause of resistance offered by the metallic wire in the flow of current through it?
Answer» (a) Name the particles which are responsible for the flow of current in a metallic wire. (b) Explain the flow of current in a metallic wire on the basis of movement of the particles named by you above in part(a) (c) What is the cause of resistance offered by the metallic wire in the flow of current through it?

Discussion

35.	Sort the following electric components in the correct order from the mainline to an appliance of a household:
Answer» Sort the following electric components in the correct order from the mainline to an appliance of a household:

Discussion

36.	Pure solid sulphur absorbs 2.7 kcal of heat and becomes molten sulphur of mass 300 g. What is the specific latent heat of melting of sulphur in J g−1?37.8
Answer» Pure solid sulphur absorbs $2.7 kcal$ of heat and becomes molten sulphur of mass $300 g$ . What is the specific latent heat of melting of sulphur in ${J g}^{- 1}$ ? 37.8

Discussion

37.	A long solenoid of diameter 0.1 m has 2×104 turns per meter. At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is 10π2 Ω, the total charge flowing through the coil during this time is
Answer» A long solenoid of diameter $0.1 m$ has $2 \times 10^{4}$ turns per meter. At the centre of the solenoid, a coil of 100 turns and radius $0.01 m$ is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to $0 A$ from $4 A$ in $0.05 s$ . If the resistance of the coil is $10 π^{2} Ω$ , the total charge flowing through the coil during this time is

Discussion

38.	1mole of propane on combustion at stp gives A kilojoules of heat energy . Calculate the heat liberated when 2.4litres of propane on combustion at STP
Answer» 1mole of propane on combustion at stp gives A kilojoules of heat energy . Calculate the heat liberated when 2.4litres of propane on combustion at STP

Discussion

39.	An air bubble in a sphere having 4 cm diameter appears 1 cm from surface nearest to eye when looked along the diameter. If amg = 1.5, the distance of bubble from refracting surface is
Answer» An air bubble in a sphere having 4 cm diameter appears 1 cm from surface nearest to eye when looked along the diameter. If _am_g = 1.5, the distance of bubble from refracting surface is

Discussion

40.	A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in the downward direction to raise a load of 4500 N, calculate : (a) the mechanical advantage , (b) the velocity ratio, and (c) the efficiency of the system.
Answer» A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in the downward direction to raise a load of 4500 N, calculate : (a) the mechanical advantage , (b) the velocity ratio, and (c) the efficiency of the system.

40.

A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in the downward direction to raise a load of 4500 N, calculate : (a) the mechanical advantage , (b) the velocity ratio, and (c) the efficiency of the system.

Answer»

A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in the downward direction to raise a load of 4500 N, calculate :

(a) the mechanical advantage ,

(b) the velocity ratio, and

(c) the efficiency of the system.

Discussion

41.	What is the formula for the volume of a sphere?
Answer» What is the formula for the volume of a sphere?

Discussion

42.	How high temperature is achieved in solar cooker by the use of mirrors?
Answer» How high temperature is achieved in solar cooker by the use of mirrors?

Discussion

43.	What do you mean by focal plane of a lens?
Answer» What do you mean by focal plane of a lens?

Discussion

44.	Flemings left hand rule
Answer» Flemings left hand rule

Discussion

45.	A convex lens forms a real and inverted imaged an object on a screen kept at a distance of 50 cm from it At what distance should the object be placed from the screen so that the size of the image formed is equal to the size of the object.what is the focal length of the lens used?
Answer» A convex lens forms a real and inverted imaged an object on a screen kept at a distance of 50 cm from it At what distance should the object be placed from the screen so that the size of the image formed is equal to the size of the object.what is the focal length of the lens used?

Discussion

46.	workdone in moving a 5C charge across a conductor is 100J.if the potential at one end of a conductor is 10V.find the potential at the other end of the conductor
Answer» workdone in moving a 5C charge across a conductor is 100J.if the potential at one end of a conductor is 10V.find the potential at the other end of the conductor

Discussion

47.	Is there anything which can hinder magnetic field of line??
Answer» Is there anything which can hinder magnetic field of line??

Discussion

48.	What is the voltage at which the electric power is generated at the generating station?
Answer» What is the voltage at which the electric power is generated at the generating station?

Discussion

49.	Rearrange the given sentences to form a meaningful paragraph. Input the order in the blank space provided. A. This applies to material goods generally and therefore to the greater part of the present economic life of the world. B. We may distinguish two sorts of goods, and two corresponding sorts of impulses. C. The food and clothing of one man is not the food and clothing of another; if the supply is insufficient, what one man has is obtained at the expense of another man. D. On the other hand, mental and spiritual goods do not belong to one man to the exclusion of another. E. There are goods in regard to which individual possession is possible, and there are goods in which all can share alike. ___
Answer» Rearrange the given sentences to form a meaningful paragraph. Input the order in the blank space provided. A. This applies to material goods generally and therefore to the greater part of the present economic life of the world. B. We may distinguish two sorts of goods, and two corresponding sorts of impulses. C. The food and clothing of one man is not the food and clothing of another; if the supply is insufficient, what one man has is obtained at the expense of another man. D. On the other hand, mental and spiritual goods do not belong to one man to the exclusion of another. E. There are goods in regard to which individual possession is possible, and there are goods in which all can share alike. ___

49.

Rearrange the given sentences to form a meaningful paragraph. Input the order in the blank space provided. A. This applies to material goods generally and therefore to the greater part of the present economic life of the world. B. We may distinguish two sorts of goods, and two corresponding sorts of impulses. C. The food and clothing of one man is not the food and clothing of another; if the supply is insufficient, what one man has is obtained at the expense of another man. D. On the other hand, mental and spiritual goods do not belong to one man to the exclusion of another. E. There are goods in regard to which individual possession is possible, and there are goods in which all can share alike. ___

Answer»

Rearrange the given sentences to form a meaningful paragraph. Input the order in the blank space provided.

A. This applies to material goods generally and therefore to the greater part of the present economic life of the world.

B. We may distinguish two sorts of goods, and two corresponding sorts of impulses.

C. The food and clothing of one man is not the food and clothing of another; if the supply is insufficient, what one man has is obtained at the expense of another man.

D. On the other hand, mental and spiritual goods do not belong to one man to the exclusion of another.

E. There are goods in regard to which individual possession is possible, and there are goods in which all can share alike.

___

Discussion

50.	A convex lens has a focal length of 10 cm. At which of the following position should an object be placed so that this convex lens may act as a magnifying glass ? (a) 15 cm (b) 7 cm (c) 20 cm (d) 25 cm
Answer» A convex lens has a focal length of 10 cm. At which of the following position should an object be placed so that this convex lens may act as a magnifying glass ? (a) 15 cm (b) 7 cm (c) 20 cm (d) 25 cm

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What do you mean by moment of a force?

What is the expansion of "Wi-Fi"?

A convex lens produces an inverted image magnified three times of an object placed at a distance of 15 col from it. Calculate focal length of the lens.

Why do we always take the north pole of the compass as a reference point while plotting the magnetic field of a magnet?? Taking the south pole as a reference point we can even plot the field outside a bar magnet from south to north..

What is magnetic permeability

1) Is light a ray, a wave or particle? Comment.

What is meant by "sustainable management"? Why is reuse considered better than recycling?

Fill in the blanks with appropriate homophones. The ________ cake with pink frosting was served to the guests at the party. A weak electric ________ was passed.

Where should an object be placed in front of a convex lens so as to obtain its virtual, erect and magnified image ?

The angle of reflection is always ______ the angle of incidence.

Which one of the following is the use of concave lens

The equivalent resistance between points A and B in the circuit shown is

During a race, a man weighing 60 kg is accelerating on a levelled track and acquired a velocity thrice his initial velocity. What was the change in his potential energy?

A boy hits the football with a large force, the action force acts on the football and same magnitude reaction force acts on the boy. What can be inferred from the statement?

A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of the magnetic field at a point will be North to South when the point is ____

In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.

Lyophilic sols are more stable than lyophobic because

Comment on the statement 'loudness of sound is of a subjective nature, while intensity is of objective nature.'

A rod of length 10m is hinged at the centre.A force of 20 N is applied at one end. At what distance should another force of 25 N be applied from the centre so that the rod is in equilibrium?

Mn and Mp represent mass of neutron and proton respectively. If an element having nuclear mass M has N-neutron and Z-proton, then the correct relation will be

Among the given options, wavelength of which colour light is the shortest?

An electric refrigerator rated 400W operates 8 hours per day. What is the cost of the energy to operate it for one month at a rate of Rs 5.00 per unit.

Critical angle of light passing from glass to air is minimum for ___ colour.

Why is a SOLENOID made by winding wire over a NONCONDUCTING cylindrical tube ?

Question 24 What is electrical resistivity? In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 5 A. The reading of the ammeter decreases to half when the length of the wire is doubled. Why?

Give two properties of ultraviolet radiations which differ from the visible light.

A ray of white light is passed through a glass prism and spectrum is obtained on a screen. (a) Name the seven colours of the spectrum in order. (b) Do the colours have the same width in the spectrum ? (c) Which of the colour of the spectrum of white light deviates (i) the most, (ii) the least ?

To avoid energy crisis, energy need to be

Work done is related to the applied force as follows

A force of 10 N acts on a mass of 5 kg for 5s. If the body is initially at rest, what is the final velocity of the body?

Geothermal energy is produced by the : (a) fission of radioactive materials (b) burning of coal inside the coal mines (c) combustion of natural gas deep inside the earth (d) fusion of radioactive substances

How is presbyopia different from hypermetropia?

Sort the following electric components in the correct order from the mainline to an appliance of a household:

Pure solid sulphur absorbs 2.7 kcal of heat and becomes molten sulphur of mass 300 g. What is the specific latent heat of melting of sulphur in J g−1?37.8

1mole of propane on combustion at stp gives A kilojoules of heat energy . Calculate the heat liberated when 2.4litres of propane on combustion at STP

An air bubble in a sphere having 4 cm diameter appears 1 cm from surface nearest to eye when looked along the diameter. If amg = 1.5, the distance of bubble from refracting surface is

A block and tackle system has 5 pulleys. If an effort of 1000 N is needed in the downward direction to raise a load of 4500 N, calculate : (a) the mechanical advantage , (b) the velocity ratio, and (c) the efficiency of the system.

What is the formula for the volume of a sphere?

How high temperature is achieved in solar cooker by the use of mirrors?

What do you mean by focal plane of a lens?

Flemings left hand rule

A convex lens forms a real and inverted imaged an object on a screen kept at a distance of 50 cm from it At what distance should the object be placed from the screen so that the size of the image formed is equal to the size of the object.what is the focal length of the lens used?

workdone in moving a 5C charge across a conductor is 100J.if the potential at one end of a conductor is 10V.find the potential at the other end of the conductor

Is there anything which can hinder magnetic field of line??

What is the voltage at which the electric power is generated at the generating station?

A convex lens has a focal length of 10 cm. At which of the following position should an object be placed so that this convex lens may act as a magnifying glass ? (a) 15 cm (b) 7 cm (c) 20 cm (d) 25 cm

Fill in the blanks with appropriate homophones. The cake with pink frosting was served to the guests at the party. A weak electric was passed.