16569 + Interview Questions in Physics

1.	Select the most appropriate option to fill in the blanks from the given alternatives. After a week’s rain, the ___ was at its highest.
Answer» Select the most appropriate option to fill in the blanks from the given alternatives. After a week’s rain, the ___ was at its highest.

1.

Select the most appropriate option to fill in the blanks from the given alternatives. After a week’s rain, the ___ was at its highest.

Answer»

Select the most appropriate option to fill in the blanks from the given alternatives.

After a week’s rain, the ___ was at its highest.

2.	Two particles of mass m1 and m2 in projectile motion have velocities v1 and v2 respectively at time t=0 . They collide at time t1 . Their velocities become v1' and v2' at time 2t1 while still moving in air. The value of \|(m1v1'+ m2v2')-(m1v1 + m2v2')\|
Answer» Two particles of mass m1 and m2 in projectile motion have velocities v1 and v2 respectively at time t=0 . They collide at time t1 . Their velocities become v1' and v2' at time 2t1 while still moving in air. The value of \|(m1v1'+ m2v2')-(m1v1 + m2v2')\|

Discussion

3.	2 wires of length L, 2L and area A, A2 respectively and of the same material. Find the ratio of their resistance.
Answer» 2 wires of length L, 2L and area A, A2 respectively and of the same material. Find the ratio of their resistance.

Discussion

4.	During increase in the range of the ammeter a small resistor is attached but how cay large amount of current can be passed through it.will it not damage that resistor?
Answer» During increase in the range of the ammeter a small resistor is attached but how cay large amount of current can be passed through it.will it not damage that resistor?

Discussion

5.	29. diatomic AB ka dipole moment is 1.6 D and intranuclei distance is 100 pm. Find out electronic charge percentage on more electronagative atom.
Answer» 29. diatomic AB ka dipole moment is 1.6 D and intranuclei distance is 100 pm. Find out electronic charge percentage on more electronagative atom.

Discussion

6.	A charge Q is uniformly distributed over a rod of length l held perpendicular to the face of a hypothetical cube of side length l with the centre of the cube at one end of the rod as shown in the figure below. Find the flux of the electric field through the entire surface of the cube.
Answer» A charge $Q$ is uniformly distributed over a rod of length $l$ held perpendicular to the face of a hypothetical cube of side length $l$ with the centre of the cube at one end of the rod as shown in the figure below. Find the flux of the electric field through the entire surface of the cube.

Discussion

7.	Name the important parts of the eye.
Answer» Name the important parts of the eye.

Discussion

8.	Identify the words which have been unnecessarily repeated in the passage. The electric hot plate came crashing down at 10 p.m. last night. This happened because the wooden table on which the electric hot plate was kept had been burning slowly because of the hot plate’s heat.
Answer» Identify the words which have been unnecessarily repeated in the passage. The electric hot plate came crashing down at 10 p.m. last night. This happened because the wooden table on which the electric hot plate was kept had been burning slowly because of the hot plate’s heat.

8.

Identify the words which have been unnecessarily repeated in the passage. The electric hot plate came crashing down at 10 p.m. last night. This happened because the wooden table on which the electric hot plate was kept had been burning slowly because of the hot plate’s heat.

Answer»

Identify the words which have been unnecessarily repeated in the passage.
The electric hot plate came crashing down at 10 p.m. last night. This happened because the wooden table on which the electric hot plate was kept had been burning slowly because of the hot plate’s heat.

Discussion

9.	Study the following ray diagrams:The diagrams showing the correct path of the ray after passing through the lens are
Answer» Study the following ray diagrams: The diagrams showing the correct path of the ray after passing through the lens are

9.

Study the following ray diagrams:The diagrams showing the correct path of the ray after passing through the lens are

Answer»

Study the following ray diagrams:

The diagrams showing the correct path of the ray after passing through the lens are

Discussion

10.	4. During electrolysis of water, 67.2 ml of gases were collected at STP. Find the time for which current of 1 A was passed through solutions
Answer» 4. During electrolysis of water, 67.2 ml of gases were collected at STP. Find the time for which current of 1 A was passed through solutions

Discussion

11.	A convex lens is made of 3 layers of glass of different materials. A point object is placed on its axis. The number of images of the object are?
Answer» A convex lens is made of 3 layers of glass of different materials. A point object is placed on its axis. The number of images of the object are?

Discussion

12.	Question 15Rutherford’s alpha-particle scattering experiment was responsible for the discovery of:(a) Atomic Nucleus(b) Electron(c) Proton(d) Neutron
Answer» Question 15 Rutherford’s alpha-particle scattering experiment was responsible for the discovery of: (a) Atomic Nucleus (b) Electron (c) Proton (d) Neutron

Discussion

13.	What is the mass of argon in a tank at 30C◦if the tank has a volume of 300 L and the argon pressure in thetank is 354.64 kN/m2(universal gas constant is 8.31 N · m · mol−1· K−1). How many moles of gas is there in the tank?How many degrees of freedom argon have? How will the internal energy change if the tank gains 200kJ of heat?
Answer» What is the mass of argon in a tank at 30C ◦ if the tank has a volume of 300 L and the argon pressure in the tank is 354.64 kN/m2 (universal gas constant is 8.31 N · m · mol−1 · K−1 ). How many moles of gas is there in the tank? How many degrees of freedom argon have? How will the internal energy change if the tank gains 200kJ of heat?

Discussion

14.	Which among the following elements in the given circuit is the load ?
Answer» Which among the following elements in the given circuit is the load ?

Discussion

15.	A student has to do the experiment on finding the focal length of a given convex lens by using a distant object. She can do her experiment if she is also made available:(1) a lamp and a screen(2) a scale and a screen(3) a lamp and a scale(4) only a screen
Answer» A student has to do the experiment on finding the focal length of a given convex lens by using a distant object. She can do her experiment if she is also made available: (1) a lamp and a screen (2) a scale and a screen (3) a lamp and a scale (4) only a screen

Discussion

16.	4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas at constant volume is 5.0 J/K-mol. If the speed of sound in this gas at NTP is 952 m/s, then the heat capacity at constant pressure is (Take gas constant R 8.3 JK mol) Here why we cannot use Cp-Cv=R
Answer» 4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas at constant volume is 5.0 J/K-mol. If the speed of sound in this gas at NTP is 952 m/s, then the heat capacity at constant pressure is (Take gas constant R 8.3 JK mol) Here why we cannot use Cp-Cv=R

Discussion

17.	A conducting cycle wheel, with each spoke of length l, is rotating about its geometrical axis, with uniform angular velocity ω, in a uniform magnetic field as shown in the figure. If the number of spokes are N, then calculate the induced emf between the center and the rim of the wheel.
Answer» A conducting cycle wheel, with each spoke of length $l$ , is rotating about its geometrical axis, with uniform angular velocity $ω$ , in a uniform magnetic field as shown in the figure. If the number of spokes are $N$ , then calculate the induced emf between the center and the rim of the wheel.

Discussion

18.	OCC characteristics of a DC generator is drawn.The critical field resistance if critical speed is 1450 rpm and all constants to be 1 is _______Ω.151.84
Answer» OCC characteristics of a DC generator is drawn. The critical field resistance if critical speed is 1450 rpm and all constants to be 1 is _______ $Ω$ . 151.84

Discussion

19.	13.A capacitor is formed by two square metal plates of edge a , separated by a distance d. Dielectric of dielectric constant K1 and K2 are filled in the gap as shown in figure . Find the capacitance
Answer» 13.A capacitor is formed by two square metal plates of edge a , separated by a distance d. Dielectric of dielectric constant K1 and K2 are filled in the gap as shown in figure . Find the capacitance

Discussion

20.	Statement 1: There is a time delay between actual sunrise and apparant sunrise. Statement 2: Since the earth is spinning on its axis, therefore day and night occur.
Answer» Statement 1: There is a time delay between actual sunrise and apparant sunrise. Statement 2: Since the earth is spinning on its axis, therefore day and night occur.

20.

Statement 1: There is a time delay between actual sunrise and apparant sunrise. Statement 2: Since the earth is spinning on its axis, therefore day and night occur.

Answer»

Statement 1: There is a time delay between actual sunrise and apparant sunrise.

Statement 2: Since the earth is spinning on its axis, therefore day and night occur.

Discussion

21.	List five activities that are possible due to the presence of air.
Answer» List five activities that are possible due to the presence of air.

Discussion

22.	a ball is dropped on to the floor if the coefficient of restituition is 0.5 the percentage loss of energy of the ball on reboinding fromthe floor
Answer» a ball is dropped on to the floor if the coefficient of restituition is 0.5 the percentage loss of energy of the ball on reboinding fromthe floor

Discussion

23.	Why is voltage same in parallel combination of resistors and different in series?
Answer» Why is voltage same in parallel combination of resistors and different in series?

Discussion

24.	two infinately long wire placed parallel to each other at a dis†an ce 2a . both carying current I in the same direction then find out magnetic field at at point P which is at a dis†an ce 2a from each of wire
Answer» two infinately long wire placed parallel to each other at a dis†an ce 2a . both carying current I in the same direction then find out magnetic field at at point P which is at a dis†an ce 2a from each of wire

Discussion

25.	A convex lens is cut in half along its principal axis and the two halves are separated by a distance of 12 cm. An object is placed at a distance of 6 cm in front of one lens as shown in figure. Two sharp images are formed on the screen placed 80 cm from the object. What is the focal length of the lens ?
Answer» A convex lens is cut in half along its principal axis and the two halves are separated by a distance of $12 cm$ . An object is placed at a distance of $6 cm$ in front of one lens as shown in figure. Two sharp images are formed on the screen placed $80 cm$ from the object. What is the focal length of the lens ?

Discussion

26.	Electrostatic force between two charges q1 and q2 is F. A third charge q3 is placed near q1 and a medium is inserted between q1 and q2. If dielectric constant of medium is K.Force on q1 due to q2 becomes
Answer» Electrostatic force between two charges q1 and q2 is F. A third charge q3 is placed near q1 and a medium is inserted between q1 and q2. If dielectric constant of medium is K.Force on q1 due to q2 becomes

Discussion

27.	what effect resonance will have on the dipole moment of vinyl chlorid
Answer» what effect resonance will have on the dipole moment of vinyl chlorid

Discussion

28.	Force of repulsion between two point charges placed at a distance d is F. What distance apart should they be kept in the same medium so that force between them is f/3 ?
Answer» Force of repulsion between two point charges placed at a distance d is F. What distance apart should they be kept in the same medium so that force between them is f/3 ?

Discussion

29.	Name three factors on which the deviation produced by a prism depends and state how does it depend on the factors stated by you.
Answer» Name three factors on which the deviation produced by a prism depends and state how does it depend on the factors stated by you.

Discussion

30.	Which of the following terms does not represent electrical power in a circuit?
Answer» Which of the following terms does not represent electrical power in a circuit?

Discussion

31.	The device which is used to measure electric current through a circuit is called a/an ____.
Answer» The device which is used to measure electric current through a circuit is called a/an ____.

Discussion

32.	A square shaped coil of side 20 cm is rotating at 60 revolutions per minute in a magnetic field of 100 T.number of turns is thousands, find maximum emf developed across the coil.
Answer» A square shaped coil of side 20 cm is rotating at 60 revolutions per minute in a magnetic field of 100 T.number of turns is thousands, find maximum emf developed across the coil.

Discussion

33.	Draw the mirror reflection of the given shape along the dashed line.
Answer» Draw the mirror reflection of the given shape along the dashed line.

Discussion

34.	To test whether a given rod is magnet or not, we use
Answer» To test whether a given rod is magnet or not, we use

Discussion

35.	Consider the singly reinforced beam section given below (left figure). The stress block parameters for the cross-section from IS : 456-2000 are also given below (right figure). The moment of resistance for the given section by the limit method is _______kN-m.42.7708
Answer» Consider the singly reinforced beam section given below (left figure). The stress block parameters for the cross-section from IS : 456-2000 are also given below (right figure). The moment of resistance for the given section by the limit method is _______kN-m. 42.7708

Discussion

36.	Why we cannot use a bulb instead of a resistor in ohm law
Answer» Why we cannot use a bulb instead of a resistor in ohm law

Discussion

37.	Why can't hydrogen be used as domestic fuel?
Answer» Why can't hydrogen be used as domestic fuel?

Discussion

38.	If current of 5 ampere is flowing through a conductor in 2 seconds then the number of electrons passing through any cross section of the conductor per second is?
Answer» If current of 5 ampere is flowing through a conductor in 2 seconds then the number of electrons passing through any cross section of the conductor per second is?

Discussion

39.	A charge q is placed at the centre of the line joining two equal charges Q . The system of three particles will be in equilibrium if q is equal to
Answer» A charge q is placed at the centre of the line joining two equal charges Q . The system of three particles will be in equilibrium if q is equal to

Discussion

40.	The defect of vision which cannot be corrected by using spectacles is : (a) myopia (b) presbyopia (c) cataract (d) hypermetropia
Answer» The defect of vision which cannot be corrected by using spectacles is : (a) myopia (b) presbyopia (c) cataract (d) hypermetropia

Discussion

41.	Why rainbow always appears in opposite direction of the sun
Answer» Why rainbow always appears in opposite direction of the sun

Discussion

42.	A uniform metre scale is in equilibrium as shown below. Calculate the mass of the ruler.
Answer» A uniform metre scale is in equilibrium as shown below. Calculate the mass of the ruler.

Discussion

43.	A ball is thrown upwards with an initial velocity of 20 ms−1. Find the time of flight and the maximum height reached by the body respectively. (g=10 ms−2)
Answer» A ball is thrown upwards with an initial velocity of $20 m s^{- 1}$ . Find the time of flight and the maximum height reached by the body respectively. ( $g = 10 m s^{- 2}$ )

Discussion

44.	What do you understand by the term current ? State and define its S.I.unit.
Answer» What do you understand by the term current ? State and define its S.I.unit.

Discussion

45.	Identify the angle of deviation in the below given prism
Answer» Identify the angle of deviation in the below given prism

Discussion

46.	The terminals of a battery are connected by a certain length of resistance wire. Which of the following, on its own, will decrease the current flowing through the battery?
Answer» The terminals of a battery are connected by a certain length of resistance wire. Which of the following, on its own, will decrease the current flowing through the battery?

Discussion

47.	Calculate the volumetric composition of water.
Answer» Calculate the volumetric composition of water.

Discussion

48.	Information about history of spherical mirrors in human civilization
Answer» Information about history of spherical mirrors in human civilization

Discussion

49.	16. If the resistance of a conductor is 5 ohm at 50 degree Celsius and 7 ohm at 100 degree celsius then the mean temperature coefficient of resistance (of the material) is?
Answer» 16. If the resistance of a conductor is 5 ohm at 50 degree Celsius and 7 ohm at 100 degree celsius then the mean temperature coefficient of resistance (of the material) is?

Discussion

50.	Copper and silver voltameter are connected in series and an electric current is passed through them for sometime. It is observed that 14 g of copper is deposited. Then, calculate the mass of silver deposited.Given: Electrochemical equivalent of copper =3.2×10−7 g C−1Electrochemical equivalent of silver =1.2×10−6 g C−1
Answer» Copper and silver voltameter are connected in series and an electric current is passed through them for sometime. It is observed that $14 g$ of copper is deposited. Then, calculate the mass of silver deposited. Given: $Electrochemical equivalent of copper = 3.2 \times 10^{- 7} g C^{- 1}$ $Electrochemical equivalent of silver = 1.2 \times 10^{- 6} g C^{- 1}$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Select the most appropriate option to fill in the blanks from the given alternatives. After a week’s rain, the ___ was at its highest.

Two particles of mass m1 and m2 in projectile motion have velocities v1 and v2 respectively at time t=0 . They collide at time t1 . Their velocities become v1' and v2' at time 2t1 while still moving in air. The value of |(m1v1'+ m2v2')-(m1v1 + m2v2')|

2 wires of length L, 2L and area A, A2 respectively and of the same material. Find the ratio of their resistance.

During increase in the range of the ammeter a small resistor is attached but how cay large amount of current can be passed through it.will it not damage that resistor?

29. diatomic AB ka dipole moment is 1.6 D and intranuclei distance is 100 pm. Find out electronic charge percentage on more electronagative atom.

A charge Q is uniformly distributed over a rod of length l held perpendicular to the face of a hypothetical cube of side length l with the centre of the cube at one end of the rod as shown in the figure below. Find the flux of the electric field through the entire surface of the cube.

Name the important parts of the eye.

Identify the words which have been unnecessarily repeated in the passage. The electric hot plate came crashing down at 10 p.m. last night. This happened because the wooden table on which the electric hot plate was kept had been burning slowly because of the hot plate’s heat.

Study the following ray diagrams:The diagrams showing the correct path of the ray after passing through the lens are

4. During electrolysis of water, 67.2 ml of gases were collected at STP. Find the time for which current of 1 A was passed through solutions

A convex lens is made of 3 layers of glass of different materials. A point object is placed on its axis. The number of images of the object are?

Question 15Rutherford’s alpha-particle scattering experiment was responsible for the discovery of:(a) Atomic Nucleus(b) Electron(c) Proton(d) Neutron

Which among the following elements in the given circuit is the load ?

A student has to do the experiment on finding the focal length of a given convex lens by using a distant object. She can do her experiment if she is also made available:(1) a lamp and a screen(2) a scale and a screen(3) a lamp and a scale(4) only a screen

4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity of the gas at constant volume is 5.0 J/K-mol. If the speed of sound in this gas at NTP is 952 m/s, then the heat capacity at constant pressure is (Take gas constant R 8.3 JK mol) Here why we cannot use Cp-Cv=R

A conducting cycle wheel, with each spoke of length l, is rotating about its geometrical axis, with uniform angular velocity ω, in a uniform magnetic field as shown in the figure. If the number of spokes are N, then calculate the induced emf between the center and the rim of the wheel.

OCC characteristics of a DC generator is drawn.The critical field resistance if critical speed is 1450 rpm and all constants to be 1 is _______Ω.151.84

13.A capacitor is formed by two square metal plates of edge a , separated by a distance d. Dielectric of dielectric constant K1 and K2 are filled in the gap as shown in figure . Find the capacitance

Statement 1: There is a time delay between actual sunrise and apparant sunrise. Statement 2: Since the earth is spinning on its axis, therefore day and night occur.

List five activities that are possible due to the presence of air.

a ball is dropped on to the floor if the coefficient of restituition is 0.5 the percentage loss of energy of the ball on reboinding fromthe floor

Why is voltage same in parallel combination of resistors and different in series?

two infinately long wire placed parallel to each other at a dis†an ce 2a . both carying current I in the same direction then find out magnetic field at at point P which is at a dis†an ce 2a from each of wire

Electrostatic force between two charges q1 and q2 is F. A third charge q3 is placed near q1 and a medium is inserted between q1 and q2. If dielectric constant of medium is K.Force on q1 due to q2 becomes

what effect resonance will have on the dipole moment of vinyl chlorid

Force of repulsion between two point charges placed at a distance d is F. What distance apart should they be kept in the same medium so that force between them is f/3 ?

Name three factors on which the deviation produced by a prism depends and state how does it depend on the factors stated by you.

Which of the following terms does not represent electrical power in a circuit?

The device which is used to measure electric current through a circuit is called a/an ____.

A square shaped coil of side 20 cm is rotating at 60 revolutions per minute in a magnetic field of 100 T.number of turns is thousands, find maximum emf developed across the coil.

Draw the mirror reflection of the given shape along the dashed line.

To test whether a given rod is magnet or not, we use

Consider the singly reinforced beam section given below (left figure). The stress block parameters for the cross-section from IS : 456-2000 are also given below (right figure). The moment of resistance for the given section by the limit method is _______kN-m.42.7708

Why we cannot use a bulb instead of a resistor in ohm law

Why can't hydrogen be used as domestic fuel?

If current of 5 ampere is flowing through a conductor in 2 seconds then the number of electrons passing through any cross section of the conductor per second is?

A charge q is placed at the centre of the line joining two equal charges Q . The system of three particles will be in equilibrium if q is equal to

The defect of vision which cannot be corrected by using spectacles is : (a) myopia (b) presbyopia (c) cataract (d) hypermetropia

Why rainbow always appears in opposite direction of the sun

A uniform metre scale is in equilibrium as shown below. Calculate the mass of the ruler.

A ball is thrown upwards with an initial velocity of 20 ms−1. Find the time of flight and the maximum height reached by the body respectively. (g=10 ms−2)

What do you understand by the term current ? State and define its S.I.unit.

Identify the angle of deviation in the below given prism

The terminals of a battery are connected by a certain length of resistance wire. Which of the following, on its own, will decrease the current flowing through the battery?

Calculate the volumetric composition of water.

Information about history of spherical mirrors in human civilization

16. If the resistance of a conductor is 5 ohm at 50 degree Celsius and 7 ohm at 100 degree celsius then the mean temperature coefficient of resistance (of the material) is?