16569 + Interview Questions in Physics

1.	Assertion (A): Modified forelimbs of bats serve as wings.Reason (R): The bones in the wings of bats are elongated fingers and are connected by the flaps of skin on either side of the body known as Tendons.
Answer» Assertion (A): Modified forelimbs of bats serve as wings. Reason (R): The bones in the wings of bats are elongated fingers and are connected by the flaps of skin on either side of the body known as Tendons.

Discussion

2.	Let escape velocity of a body kept at surface of a planet is u. If it is projected at a speed of 200% more than the escape speed, then it's speed in interstellar space will be
Answer» Let escape velocity of a body kept at surface of a planet is u. If it is projected at a speed of 200% more than the escape speed, then it's speed in interstellar space will be

Discussion

3.	A convex surface of radius of curvature 40cm separates two media of refractive indices 4/3 and 1.50. An object is kept in the first medium at a distance of 20cm from the surface. Calculate the position of the image.
Answer» A convex surface of radius of curvature 40cm separates two media of refractive indices 4/3 and 1.50. An object is kept in the first medium at a distance of 20cm from the surface. Calculate the position of the image.

Discussion

4.	What devices will you use to share with others the knowledge that you have?
Answer» What devices will you use to share with others the knowledge that you have?

Discussion

5.	The path of a ray of light passing through a glass prism is shown below: In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
Answer» The path of a ray of light passing through a glass prism is shown below: In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:

5.

The path of a ray of light passing through a glass prism is shown below: In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:

Answer»

The path of a ray of light passing through a glass prism is shown below:

In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:

Discussion

6.	a current of 2A is flowing through a cell of E.M.F. 5V and internal resistance 0.5ohm from negative to positive electrode . if the potenial of negative electrode is 10 V , The potenial of postive electrode will be ;1.5V2.14V3.15V4.16V
Answer» a current of 2A is flowing through a cell of E.M.F. 5V and internal resistance 0.5ohm from negative to positive electrode . if the potenial of negative electrode is 10 V , The potenial of postive electrode will be ; 1.5V 2.14V 3.15V 4.16V

Discussion

7.	In electromagnetic induction, the induced e.m.f. in a coil is independent of
Answer» In electromagnetic induction, the induced e.m.f. in a coil is independent of

Discussion

8.	The speed of a DC motor can be increased by
Answer» The speed of a DC motor can be increased by

Discussion

9.	The middle finger in Fleming’s right-hand rule represents the direction of which quantity?
Answer» The middle finger in Fleming’s right-hand rule represents the direction of which quantity?

Discussion

10.	A gas at 25 ∘C with a volume of 6.5 L expands by 50%, when the temperature is raised. If the pressure is kept constant, what is the final temperature of the gas?
Answer» A gas at $25^{\circ} C$ with a volume of $6.5 L$ expands by $50 %$ , when the temperature is raised. If the pressure is kept constant, what is the final temperature of the gas?

Discussion

11.	Give their short functions 1. Tendons 2. Ligaments 3. Cartilage Name what are these called collectively
Answer» Give their short functions 1. Tendons 2. Ligaments 3. Cartilage Name what are these called collectively

11.

Give their short functions 1. Tendons 2. Ligaments 3. Cartilage Name what are these called collectively

Answer»

Give their short functions

1. Tendons

2. Ligaments

3. Cartilage

Name what are these called collectively

Discussion

12.	The energy of second bohr orbit of the hydrogen atom is -328kj/mole hence the energy of fourth bohr orbit will be
Answer» The energy of second bohr orbit of the hydrogen atom is -328kj/mole hence the energy of fourth bohr orbit will be

Discussion

13.	17. Four weightless rod of length l each are connected by hinged joints a from a rhombus.hinge A is fixed and load is suspended to hinge C. hinge D and B are connected by weightless spring of length 1.5l in unreformed state. In equilibrium the rods form angles 30^° with vertical,then time period of oscillations of load is
Answer» 17. Four weightless rod of length l each are connected by hinged joints a from a rhombus.hinge A is fixed and load is suspended to hinge C. hinge D and B are connected by weightless spring of length 1.5l in unreformed state. In equilibrium the rods form angles 30^° with vertical,then time period of oscillations of load is

Discussion

14.	Is power generated proportional to resistance or inversely proportional to resistance?
Answer» Is power generated proportional to resistance or inversely proportional to resistance?

Discussion

15.	A light ray passes from glass with R.I root3 into air. Find the angle if incidence for which angles of refraction will be double of angle of incidence .
Answer» A light ray passes from glass with R.I root3 into air. Find the angle if incidence for which angles of refraction will be double of angle of incidence .

Discussion

16.	a particle suspended by a light inextensible thread of length l is projected horizontally from its lowest position with velocity root 4gl. The particle will leabe the circular path at a height from its lowest position:1. 3l/22. 5l/33. 4l/34. 2l
Answer» a particle suspended by a light inextensible thread of length l is projected horizontally from its lowest position with velocity root 4gl. The particle will leabe the circular path at a height from its lowest position: 1. 3l/2 2. 5l/3 3. 4l/3 4. 2l

Discussion

17.	Name one defect of vision that cannot be corrected by any type of spectacle lens. Explain in brief that defect. In a myopic eye, the image of a distant object is formed in front of retina and not at the retina itself. Why does this defect arise? [3 MARKS]
Answer» Name one defect of vision that cannot be corrected by any type of spectacle lens. Explain in brief that defect. In a myopic eye, the image of a distant object is formed in front of retina and not at the retina itself. Why does this defect arise? [3 MARKS]

Discussion

18.	Question 7State true or false for the following: The evaporation of water is a reversible change. The melting of wax is a chemical change. Rusting iron is an irreversible change. The change of seasons in a year is a periodic change.
Answer» Question 7 State true or false for the following: The evaporation of water is a reversible change. The melting of wax is a chemical change. Rusting iron is an irreversible change. The change of seasons in a year is a periodic change.

18.

Question 7State true or false for the following: The evaporation of water is a reversible change. The melting of wax is a chemical change. Rusting iron is an irreversible change. The change of seasons in a year is a periodic change.

Answer»

Question 7

State true or false for the following:

The evaporation of water is a reversible change.

The melting of wax is a chemical change.

Rusting iron is an irreversible change.

The change of seasons in a year is a periodic change.

Discussion

19.	Which of the following is the correct Boiling Point of pure water at 1 atmospheric pressure?
Answer» Which of the following is the correct Boiling Point of pure water at 1 atmospheric pressure?

Discussion

20.	Why light cannot travel through opaque object
Answer» Why light cannot travel through opaque object

Discussion

21.	A very long solenoid has 15 turns per cm and a small loop of area 2 cm2 is placed in this solenoid, perpendicular to its axis. The induced emf in the loop while the current carried by the solenoid is changing steadily from 2.0 A to 4.0 A in 0.1 s is 7.54×10−x V. Then, find the value of x
Answer» A very long solenoid has $15$ turns per $cm$ and a small loop of area $2 {cm}^{2}$ is placed in this solenoid, perpendicular to its axis. The induced emf in the loop while the current carried by the solenoid is changing steadily from $2.0 A$ to $4.0 A$ in $0.1 s$ is $7.54 \times 10^{- x} V$ . Then, find the value of $x$

Discussion

22.	Specific heat capacity of a substance A is 3.8 J g−1K−1 and of the substance B is 0.4 J g−1K−1.Which substance is a good conductor of heat? How did you arrive at your conclusion ?
Answer» Specific heat capacity of a substance A is 3.8 J $g^{- 1} K^{- 1}$ and of the substance B is 0.4 J $g^{- 1} K^{- 1}$ .Which substance is a good conductor of heat? How did you arrive at your conclusion ?

Discussion

23.	energy is being emitted from the surface of black body at 127 degree celsius at the rate of 10^6 J/s m^2. The temperature of black body at which the rate of energy is 16 * 10^6 J/s m^2 will be
Answer» energy is being emitted from the surface of black body at 127 degree celsius at the rate of 10^6 J/s m^2. The temperature of black body at which the rate of energy is 16 * 10^6 J/s m^2 will be

Discussion

24.	How induced current changes after half rotation in an AC generator?
Answer» How induced current changes after half rotation in an AC generator?

Discussion

25.	The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be:
Answer» The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be:

25.

The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be:

Answer»

The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be:

Discussion

26.	When did the Karnataka state government set up the company Karnataka Pulpwood Limited?
Answer» When did the Karnataka state government set up the company Karnataka Pulpwood Limited?

Discussion

27.	State one advantage of using an A.C over D.C.
Answer» State one advantage of using an A.C over D.C.

Discussion

28.	According to Faraday's law of electromagnetic induction
Answer» According to Faraday's law of electromagnetic induction

Discussion

29.	A satellite orbiting about Earth does not fall down because of ___________.
Answer» A satellite orbiting about Earth does not fall down because of ___________.

Discussion

30.	What effect will there be on a magnetic compass when it is brought near a current carrying solenoid?
Answer» What effect will there be on a magnetic compass when it is brought near a current carrying solenoid?

Discussion

31.	The work done in rotating a bar magnet of magnetic moment M from its unstable equilibrium position to its stable equilibrium position in a uniform magnetic field B is
Answer» The work done in rotating a bar magnet of magnetic moment M from its unstable equilibrium position to its stable equilibrium position in a uniform magnetic field B is

Discussion

32.	In a coil of resistance 100 Ω, a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is
Answer» In a coil of resistance $100 Ω$ , a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is

Discussion

33.	Find the final reading of the odometer, given below is the journey details:Initial reading of the odometer = 3891 kmJourney time = 420 minsSpeed = 50 km/h.
Answer» Find the final reading of the odometer, given below is the journey details: Initial reading of the odometer $= 3891 k m$ Journey time $= 420 m i n s$ Speed $= 50 k m / h .$

Discussion

34.	In n-p-n transistor, the p-type crystal act as
Answer» In n-p-n transistor, the p-type crystal act as

Discussion

35.	A sheet pile has an embankment depth of 12 m in a homogeneous soil stratum. The coefficient of permeability of soil is 10−6m/s. Difference in the water levels between the two sides of the sheet pile is 4m. The flow net is constructed with five number of flow lines and eleven number of equipotential lines. The quantity of seepage (in cm3/s per m. up to one decimal place) under the sheet pile is 1.6
Answer» A sheet pile has an embankment depth of 12 m in a homogeneous soil stratum. The coefficient of permeability of soil is $10^{- 6} m / s$ . Difference in the water levels between the two sides of the sheet pile is 4m. The flow net is constructed with five number of flow lines and eleven number of equipotential lines. The quantity of seepage (in $c m^{3} / s$ per m. up to one decimal place) under the sheet pile is 1.6

Discussion

36.	Question 3Find the power of a concave lens of focal length 2 m.
Answer» Question 3 Find the power of a concave lens of focal length 2 m.

Discussion

37.	A cubical block of mass 2.5 kg is kept on a levelled horizontal surface. If it exerts a pressure of 100 Pa on the surface, then find the volume of the block. [ Take g = 10 = m/s² ]
Answer» A cubical block of mass 2.5 kg is kept on a levelled horizontal surface. If it exerts a pressure of 100 Pa on the surface, then find the volume of the block. [ Take g = 10 = m/s² ]

Discussion

38.	When a rovket reaches space newtons law of motion does not take place.
Answer» When a rovket reaches space newtons law of motion does not take place.

Discussion

39.	Explain the functioning of solar water heater. what are it's disadvantages?
Answer» Explain the functioning of solar water heater. what are it's disadvantages?

Discussion

40.	___ fuel is an ideal source of energy as it is non-polluting.
Answer» ___ fuel is an ideal source of energy as it is non-polluting.

Discussion

41.	What energy transformation takes place in generation of power from geo thermal energy?
Answer» What energy transformation takes place in generation of power from geo thermal energy?

Discussion

42.	Refractive index of glass with respect to water is 98 and refractive index of glass with respect to air is 32. The refractive index of water with respect to air will be
Answer» Refractive index of glass with respect to water is $\frac{9}{8}$ and refractive index of glass with respect to air is $\frac{3}{2}$ . The refractive index of water with respect to air will be

Discussion

43.	Question 13 The magnification produced by a plane mirror is +1. What does this mean?
Answer» Question 13 The magnification produced by a plane mirror is +1. What does this mean?

Discussion

44.	Find the escape velocity on the surface of the moon, if the mass and radius of the moon are 7.34×1022kg and 1.74×106m respectively.2.37
Answer» Find the escape velocity on the surface of the moon, if the mass and radius of the moon are $7.34 \times 10^{22} k g$ and $1.74 \times 10^{6} m$ respectively. 2.37

Discussion

45.	Explain the role of latent heat in the change of state of a substance.
Answer» Explain the role of latent heat in the change of state of a substance.

Discussion

46.	what pressure does the lateral surface of a long solenoid with n turns per unit lengthexperience when a current i flows through
Answer» what pressure does the lateral surface of a long solenoid with n turns per unit lengthexperience when a current i flows through

Discussion

47.	At a place , the horizontal and vertical components of the earth's magnetic field are 0.4×10−4 T and 0.3×10−4 T respectively. The resultant earth's magnetic field will be
Answer» At a place , the horizontal and vertical components of the earth's magnetic field are $0.4 \times 10^{- 4} T and 0.3 \times 10^{- 4} T$ respectively. The resultant earth's magnetic field will be

Discussion

48.	The energy required for an appliance to run is 100 J s−1. What is the power consumed by it in W, if it operates at 220 V?
Answer» The energy required for an appliance to run is $100 {J s}^{- 1}$ . What is the power consumed by it in $W$ , if it operates at $220 V$ ?

Discussion

49.	the values of two resistors are R1= (6+0.3)kilo ohm and R2=(10+0.2)kilo ohm. what is the percentage error in the equivalent resistance when they are connected in parallel?
Answer» the values of two resistors are R1= (6+0.3)kilo ohm and R2=(10+0.2)kilo ohm. what is the percentage error in the equivalent resistance when they are connected in parallel?

Discussion

50.	Kilowatt-hour is equal to _____
Answer» Kilowatt-hour is equal to _____

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Assertion (A): Modified forelimbs of bats serve as wings.Reason (R): The bones in the wings of bats are elongated fingers and are connected by the flaps of skin on either side of the body known as Tendons.

Let escape velocity of a body kept at surface of a planet is u. If it is projected at a speed of 200% more than the escape speed, then it's speed in interstellar space will be

A convex surface of radius of curvature 40cm separates two media of refractive indices 4/3 and 1.50. An object is kept in the first medium at a distance of 20cm from the surface. Calculate the position of the image.

What devices will you use to share with others the knowledge that you have?

The path of a ray of light passing through a glass prism is shown below: In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:

a current of 2A is flowing through a cell of E.M.F. 5V and internal resistance 0.5ohm from negative to positive electrode . if the potenial of negative electrode is 10 V , The potenial of postive electrode will be ;1.5V2.14V3.15V4.16V

In electromagnetic induction, the induced e.m.f. in a coil is independent of

The speed of a DC motor can be increased by

The middle finger in Fleming’s right-hand rule represents the direction of which quantity?

A gas at 25 ∘C with a volume of 6.5 L expands by 50%, when the temperature is raised. If the pressure is kept constant, what is the final temperature of the gas?

Give their short functions 1. Tendons 2. Ligaments 3. Cartilage Name what are these called collectively

The energy of second bohr orbit of the hydrogen atom is -328kj/mole hence the energy of fourth bohr orbit will be

Is power generated proportional to resistance or inversely proportional to resistance?

A light ray passes from glass with R.I root3 into air. Find the angle if incidence for which angles of refraction will be double of angle of incidence .

a particle suspended by a light inextensible thread of length l is projected horizontally from its lowest position with velocity root 4gl. The particle will leabe the circular path at a height from its lowest position:1. 3l/22. 5l/33. 4l/34. 2l

Name one defect of vision that cannot be corrected by any type of spectacle lens. Explain in brief that defect. In a myopic eye, the image of a distant object is formed in front of retina and not at the retina itself. Why does this defect arise? [3 MARKS]

Question 7State true or false for the following: The evaporation of water is a reversible change. The melting of wax is a chemical change. Rusting iron is an irreversible change. The change of seasons in a year is a periodic change.

Which of the following is the correct Boiling Point of pure water at 1 atmospheric pressure?

Why light cannot travel through opaque object

A very long solenoid has 15 turns per cm and a small loop of area 2 cm2 is placed in this solenoid, perpendicular to its axis. The induced emf in the loop while the current carried by the solenoid is changing steadily from 2.0 A to 4.0 A in 0.1 s is 7.54×10−x V. Then, find the value of x

Specific heat capacity of a substance A is 3.8 J g−1K−1 and of the substance B is 0.4 J g−1K−1.Which substance is a good conductor of heat? How did you arrive at your conclusion ?

energy is being emitted from the surface of black body at 127 degree celsius at the rate of 10^6 J/s m^2. The temperature of black body at which the rate of energy is 16 * 10^6 J/s m^2 will be

How induced current changes after half rotation in an AC generator?

The figure shows a cross-section of a large metal sheet carrying an electric current along its surface. The current in a strip of width dl is Kdl where K is a constant. The magnetic field at a point P at a distance x from the metal sheet will be:

When did the Karnataka state government set up the company Karnataka Pulpwood Limited?

State one advantage of using an A.C over D.C.

According to Faraday's law of electromagnetic induction

A satellite orbiting about Earth does not fall down because of ___________.

What effect will there be on a magnetic compass when it is brought near a current carrying solenoid?

The work done in rotating a bar magnet of magnetic moment M from its unstable equilibrium position to its stable equilibrium position in a uniform magnetic field B is

In a coil of resistance 100 Ω, a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is

Find the final reading of the odometer, given below is the journey details:Initial reading of the odometer = 3891 kmJourney time = 420 minsSpeed = 50 km/h.

In n-p-n transistor, the p-type crystal act as

Question 3Find the power of a concave lens of focal length 2 m.

A cubical block of mass 2.5 kg is kept on a levelled horizontal surface. If it exerts a pressure of 100 Pa on the surface, then find the volume of the block. [ Take g = 10 = m/s² ]

When a rovket reaches space newtons law of motion does not take place.

Explain the functioning of solar water heater. what are it's disadvantages?

___ fuel is an ideal source of energy as it is non-polluting.

What energy transformation takes place in generation of power from geo thermal energy?

Refractive index of glass with respect to water is 98 and refractive index of glass with respect to air is 32. The refractive index of water with respect to air will be

Question 13 The magnification produced by a plane mirror is +1. What does this mean?

Find the escape velocity on the surface of the moon, if the mass and radius of the moon are 7.34×1022kg and 1.74×106m respectively.2.37

Explain the role of latent heat in the change of state of a substance.

what pressure does the lateral surface of a long solenoid with n turns per unit lengthexperience when a current i flows through

At a place , the horizontal and vertical components of the earth's magnetic field are 0.4×10−4 T and 0.3×10−4 T respectively. The resultant earth's magnetic field will be

The energy required for an appliance to run is 100 J s−1. What is the power consumed by it in W, if it operates at 220 V?

the values of two resistors are R1= (6+0.3)kilo ohm and R2=(10+0.2)kilo ohm. what is the percentage error in the equivalent resistance when they are connected in parallel?

Kilowatt-hour is equal to _____