Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

In the given circuit- the value of current IL will be ______ mA. (When RL = 1kΩ)

Answer»

IL = 5/1000 = 5mA

2.

If a positive charge Q placed near a isolated metal cube then what will happen with the metal cube?

Answer»

Answer: The interior remains charge free and the surface gets non-uniform charge distribution. 

Explanation:

Since the cube is metallic, the charge gets distributed on the surface and the interior remains charge-free. However, when a positive point charge Q is brought near the metallic cube, a negative charge gets induced on the face near the positive charge Q and an equal positive charge gets induced on the face, which is away from the charge Q. Thus, the metallic surface gets a non-uniform charge distribution. 

3.

In a compound microscope, the focal lengths of two lenses are `1.5 cm` and `6.25 cm` an object is placed at `2 cm` form objective and the final image is formed at `25 cm` from eye lens. The distance between the two lenses isA. `6.00cm`B. `7.75cm`C. `9.25cm`D. `11.00cm`

Answer» Correct Answer - D
`v_(0) = (f_(0)u_(0))/(u_(0)-f_(0)) = (1.5xx2)/(2-1.5) = 6cm`
`u_(e) = (f_(e)D)/(f_(e)+D) =(6.25 xx 25)/(25+6.25) = 5cm`
`L = v_(0)+u_(e) = 6+5 = 11 cm`
(Distance between the lens is the length of tube)
4.

`Erg-m^(-1)` can be the unit of measure forA. ForceB. MomentumC. PowerD. Acceleration

Answer» Correct Answer - A
Energy `(E)=FxxdimpliesF=(E)/(d)`, so Erg/metre can be the unit of force.
5.

The unit of potential energy isA. `g((cm)/(sec^2))`B. `g((cm)/(sec))^2`C. `g((cm^2)/(sec))`D. `g((cm)/(sec))`

Answer» Correct Answer - B
potential energy `=mgh=g((cm)/(sec^2))cm=g((cm)/(sec))^2`
6.

This is the position graph of a mass on a spring what can you say about the velocity and the force at the instant indicated by the dashed line ? Positive direction is to right A. Velocity is zero , force is to the rightB. Velocity is positive , force is to the rightC. Velocity is negative , force is to the rightD. Velocity is zero , force is to the left

Answer» Correct Answer - A
`v_(z)-0` because the slope of the position graph is zero the negative value of x shows that the particle is left of the equilibrium position so the restoring force is to the right
7.

A particle performs simple harmonic motion wit amplitude A. its speed is double at the instant when it is at distance `(A)/(3)` from equilibrium position. The new amplitude of the motion isA. `sqrt(11)A`B. `(sqrt(22)A)/(3)`C. `(sqrt(33)A)/(2)`D. none of these

Answer» Correct Answer - B
`V=omegasqrt(A^(2)-((A)/(3))^(2))`
`V=sqrt((8A^(2)omega)/(9))=(2sqrt(2))/(3)Aomega`.
`V_(n ew)=2V=(4sqrt(2))/(3)(A)omega`
so the new amplitude is given by
`V_(n ew)=omegasqrt((A_(n ew))^(2)-x^(2))`
`(4sqrt(2))/(3)Aomega=omegasqrt((A_(n ew))^(2)-((A)/(3))^(2))`
`(32)/(9)A^(2)=(A_(n ew))^(2)-(A^(2))/(9)`
`A_(n ew)2=(33A^(2))/(9)`
`A_(n ew)=(sqrt(33)A)/(3)`
8.

A particle moves in one dimension in a conservation force field. The potential energy is depicted in the graph below. If the particle starts to move from rest from the point `A`, thenA. the speed is zero at the point A and E.B. the acceleration vanished at the points A, B, C, D, EC. the acceleration vanished at the points B, C, D.D. the speed is maximum at the point D.

Answer» Correct Answer - A::C
`V_(A) + K_(A)=V_(E)+K_(E)`
`V_(A)=V_(E) & K_(A)=0`
`:. K_(E)=0 F=(dV)/(dx)=0`
Slope =0 at points B,C & D
9.

A particle moves in one dimension in a conservation force field. The potential energy is depicted in the graph below. If the particle starts to move from rest from the point `A`, thenA. the speed is zero at the point `A` and `E`.B. the acceleration vanished at the point `A,B,D,C,E`C. the acceleration vanished at the points `B,C,D`D. the speed is maximum at the point `D.`

Answer» Correct Answer - A::C
`V_(A)+K_(A)=V_(E)+K_(E)`
`V_(A)=V_(E) & K_(A)=0 :. K_(E)=0`
`F=(dV)/(dx)=0`,
Slope `=0` at points `B,C,&D`
Ans. `(AC)`
10.

Which of the following represents a volt?A. Joule/secondB. Watt/AmpereC. Watt/CoulombD. Coulomb/Joule

Answer» Correct Answer - B
`(watt)/(ampere)=volt`
11.

A lift is moving in upward direction with speed `20m//s` and having acceleration `5m//s^2` in downward direction. A bolt drops from the ceiling of lift at that moment. Just after the drop, the:A. velocity of bolt with respect to ground is zero.B. velocity of bolt with respect to ground is `20m//s` in upward directionC. acceleration of bolt with respect to ground is `5m//s^(2)`D. none of these

Answer» Correct Answer - B
The velocity of an object released in a moving frame is equal to that of frame as observed from the frame.
12.

A steel wire and a copper wire of equal length and equal cross- sectional area are joined end to end and the combination is subjected to a tension. Find the ratio of copper/steel (a) the stresses developed . In the two wires, (b) the strains developed. (Y of steel `= 2xx10^(11) N//m^(2)` Y of copper `= 1.3xx10^(11) N//m^(2)`)

Answer» Correct Answer - `(a) 1 (b) (strai n i n copper wire )/(stra i n i n steel wire )=(20)/(13)`
`(a) 1 (b) ("strain in copper wire")/("strain in steel wire")=(20)/(13)`
13.

A steel rod of cross sectional area `4cm^2 and `length 2m shrinks by 0.1 cm as the temperature decreases in night. If the rod is clamped at both ends during the day horus, find the tension developed in it during night hours. Young modulus of steel ``=1.9xx10611` nm^-2`

Answer» Correct Answer - `3.8xx10^(4)N`
`3.8xx10^(4)N`
14.

If the unit of length and force be increased four times, then the unit of energy isA. Increased 4 timesB. Increased 8 timesC. increased 16 timesD. Decreased 16 times

Answer» Correct Answer - C
Energy`=`force`xx`distance, so if both are increased by 4 times, then energy will increase by 16 times
15.

What is total internal reflection? What are the conditions for it?

Answer»

Total internal reflection: When a ray of light goes from denser to rarer medium it bends away from the normal and as the angle of incidence in denser medium increases the angle of refraction in rarer medium also increases and at a certain angle,angle of refraction becomes 90°,this angle of incidence is called critical angle. when angle of incidence exceeds the critical angle then light ray comes back into the same medium after reflection from interface. this phenomenon is called total internal reflection.

Conditions for Total Internal reflection:

(i) The ray mist travel from denser medium to rarer medium.

(ii) The angle of incidence i must be greater then critical angle c.

16.

The all-pass filter is sometimes called a a. Tow-Thomas filter b. Delay equalizer c. KHN filter d. State-variable filter

Answer»

(b) Delay equalizer

17.

The biquadratic filter a. Has low component sensitivity b. Uses three or more op amps c. Is also called Tow-Thomas filter d. All of the above

Answer»

(d) All of the above

18.

An electron traveling north enters a region where the electric field is uniform and points west. The electron: A. speeds up B. slows down C. veers eastD. veers west E. continues with the same speed in the same direction

Answer»

C. veers east

19.

State Kirchhoff's two laws for electrical network.

Answer»

Kirchhoff's first law: This law is also known as junction rule or current law (KCL). According to it the algebric sum of currents meeting at a junction is zero i.e., ∑i = 0. In a circuit,at any junction the sum of the currents entering the junction must equal the sum of the currents leaving the junction 

i1 + i3 = i2 +i4.

Kirchhoff's second law:This law is also known as loop rule or voltage law (KVL) and according it 'the algebric sum of the changes in potential in complete tranverse of a mes (closed loop) is zero,i.e ∑V = 0 This law represents 'conservation of energy'.

20.

Derive dimension and SI unit of magnetic flux.

Answer»

Like electric,flux, magnetic flux is proportional to the number of magnetic field lines passing through a surface. It is denoted by ϕB.

Mathematically, ϕBvector(B . A) = B .A cos 0

Where ϕB  is the magnetic flux through a plane surface of area A placed in a uniform magnetic field B.θ is the-angle between (vector B and vector A). Equation (i) can be extended-to curve surfaces and non-uniform fields.

S .I. unit of magentic flux is weber (Wb) 

1 Wb = 1 tesla. m2 

The dimensional formula of magnetic flux is [ML2T-2A-1].

21.

A screw gauge having `100` equal division and a pitch of length `1mm` is used to measue the diameter of a wire of length `5.6cm`. The main scale reading is `1mm and 47^(th)` circular division coincides with the scale. Find the curved surface area of wire in `cm^(2)` to appropriate significant fihure. `(use pi = (22)/(7)`A. `2.6cm^(2)`B. `2.587cm^(2)`C. `2.58cm^(2)`D. `2.5872cm^(2)`

Answer» Correct Answer - A
`Value of 1MSD=1mm=0.1cm`
`Value of 1CSD=(1)/(100)=mm=0.001cm`
`diameter(d)=1.47mm=0.147cm`
and `l=5.6cm`
curved surface area `A=(2pir)l`
22.

If sound waves are reflected from surface of denser medium, there is phase change of(A) 0 rad(B) \(\frac{π}{4}\) rad(C) \(\frac{π}{2}\) rad(D)  π rad

Answer»

Answer is:

(D) π rad

23.

The energy of the free surface of a liquid drop is 5π times the surface tension of the liquid. Find the diameter of the drop in C.G.S. system.

Answer»

Given : E = 5πT

To find : Diameter of the drop (d) in C.G.S. system

Formula : ΔA = 4πr2

∴ E = 4πr2T

∴ 5πT = 4πr2T

∴ 4r= 5

∴ r = \(\sqrt{\frac54}\) = \(\frac{\sqrt5}{2}\)

∴ d = 2r = \(\sqrt{5}\)

= 2.236 cm

Diameter of the drop is 2.236 cm.

24.

A particle rotates in U.C.M. with tangential velocity ‘v’ along a horizontal circle of diameter ‘D’. Total angular displacement of the particle in time ‘t’ is(A) vt (B) \((\frac{v}{D})-t\)(C) \(\frac{vt}{2D}\) (D) \(\frac{2vt}{D}\)

Answer»

(D) \(\frac{2vt}{D}\)

θ = \(\frac{s}t\)

s = vt and r = \(\frac{D}2\)

θ = \(\frac{2vt}{D}\)

25.

A and B are two steel wires and the radius of A is twice that of B. If they are stretched by the same load, then the stress on B is(A) four times that of A (B) two times that of A (C) three times that of A (D) same as that of A

Answer»

(A) Four times that of A

Stress ∝ \(\frac{1}{r^2}\)

26.

chapter name thermal properties of matter

Answer»

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4oC to 0oC, and it becomes less dense. The density is maximum at 4 degree centigrade and decreases below that temperature as shown in graph.

27.

Two springs of force constants K1 and K2 (K1 > K2) are stretched by same force. If W1 and W2 be the work done stretching the springs then _______. (A) W1 = W2 (B) W1 < W2 (C) W1 > W2 (D) W1 = W2 = 0

Answer»

(B) W1 < W2 

K ∝ \(\frac1x\) and x ∝ W

∴ W ∝ \(\frac1K\) 

28.

 If L and R are represented as the inductance and resistance respectively then the dimensional formula of R/L will be .......(a) M–2L1T–2A1   (b) M0L0T–1A0  (c) M1L–1T0A1   (d) M1L3T1A0

Answer»

(b) M0L0T–1A 

Explanation:

(L/R) Is called as time constant hence dimensional formula will be same as that of time period i.e. [M0L0T+1A0] hence (R/L) = [M0L0T–1A0]

29.

in the following figure w = 20 n, f = 25 n.. (i) find the value of angle θ.  (ii) find the tension in the string.

Answer» It is obvious from figure that angle between T and W is (180-theta). Again the angle between T and  F will be (90+theta)

So by Lami's theorem

T/sin90 = F/sin(180-theta)= W/sin(90+theta)

=> T=F/sin (theta)=W/cos(theta)

Tsin(theta)= F andTcos(theta)=W

Hence tan(theta)=F/W

So (theta) = arctan(F/W)

And T= √(F^2+W^2) N
30.

1.When current is switched ‘On’ in a room heater.it___________2.Longer line in the symbol for a cell represents its___________terminal3.A nimage that can’t be obtained on a screen is called___________.4.Image formed by a convex_______is always virtual and smaller insize5.a nimage formed by a concave_________can’t be obtained on asc

Answer»

1. When “current is switched” on in a “room heater” it produces heat due to “the heating effect” of the electric current.

2. Longer line in the symbol for a cell represents its positive terminal. 

3. An image that cannot be obtained on a screen is called virtual image.

4. Image formed by a convex lens is always virtual and smaller in size.

5. Images formed by a concave lens cannot be obtained on a screen as they are virtual.

31.

If the speed of light in a medium is 1.5 x 108 m/s. What is the absolute refractive index of the medium?

Answer»

v = 1.5 × 10m / s C = 3 × 10m/s, n=? 

n = c/v

n = 3× 108 / 1.5 × 10

n = 2

absolute refractive index of the medium is 2.

32.

Which of this element belong to the period 3? Write their electronic configuration.3Li,  14Si,  2He,  15p

Answer»

i. Elements in period 3:, 14S 15P

ii. electronic configuration 14 ∶ 2, 8, 4

15 ∶ 2, 8, 5

33.

A particle of mass "m" is at a distance"R/2"fromcentre of earth then its potential energy will be : [R Radius of earth, M→ Mass of earth]

Answer» we know that gravitational potential energy is equal to -GMm/r

HERE in this case r = R/2

PE=-2GMm/R
34.

Choose and write the correct option.i. Yesh find out F1 and F2 of symmetric convex lens experimentally then which conclusion is true. a) 1 = 2 ` b) 1 &gt; 2 c) 1 &lt; 2 d) 1 ≠ 2 ii. If we gradually increase the angle of incidence of a ray of light passing through prism then ….. a) Angle of deviation goes on decreasing. b) Angle of deviation decreases but after certain value of incident angle, deviation angle increases c) Angle of deviation goes on increasing. d) Angle of deviation increases but after certain value of incident angle deviation angle decreases.iii. Which type of carbon-carbon bonds are present in Vanaspati ghee? a) Single b) double c) triple d) single-double iv. What is the type of the following reaction? a) Displacement b) combination c) decomposition d) double displacementv. Which of the following astronauts travelled through space shuttle ‘Discovery’ first time? a) Kalpana Chawala b) Rakesh Sharma c) Sunita Williams d) Neil Armstrong

Answer»

i. a) F1 = F2

ii. b) Angle of deviation decreases but after certain value of incident angle, deviation angle increases.

iii. a) single 

iv. d) double displacement 

v. c) Sunita Williams

35.

What is the nature of the force in antiparallel current carrying conductors

Answer»

The force between the two parallel conductors is attractive in nature if the current is flowing in same direction in both the conductors whereas the force is repulsive if the current is flowing in opposite direction in the conductors.

36.

The perimeter of a ractangular sheet is to be measured. The 2 sides are 21.8 cm and 2.30 cm. what is the perimeter ?A. 48.22 cmB. 48.3 cmC. 48.2 cmD. 48.0 cm

Answer» Correct Answer - 3
P=2(l+b)=48.2
37.

Read the following paragraph and answer the questions.If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy.The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box, then no energy can flow from inside the box or come into the box.a) Heat is transferred from where to where? b) Which principle do we learn about from this process? c) How will you state the principle briefly? d) Which property of the substance is measured using this principle? 

Answer»

a) Heat is transferred from hot object to cold object. 

b) This process shows the principle of heat exchange. 

c) In this process, the cold object gains heat energy and the hot object loses heat energy.

If the system of both the objects is isolated from the environment, Heat energy lost by the hot object = Heat energy gained by the cold object. This is called the principle of ‘Heat Exchange’. 

d) The specific heat of the substance is measured by using this principle.

38.

Solve the following questions.i. For freely falling object we can write the Newton’s second equation of motion as ….. ii. Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X iii. When heat energy is absorbed by object ∆T represents the raise in temperature. What would be ∆T represent if the object loses heat energy? iv. Which is the non-ionic compound in the compounds given below.3 + l →   + 3v. Observe the following figure which bulb get fuse?

Answer»

i. = S = 1/2 gt2

ii. Li/Na/K/Rb/Cs/Fr (any one)

iii. Decrease in temperature

iv. H2O

v. Bulb A

39.

How the biomedical wastes can be transported properly?

Answer»

Internal transport :The sanitation staff from the centralized team shall be responsible for transporting the different coloured polythene bags in garbage bins from the sluice room (dedicated place where used disposables such as incontinence pads, bed pans and reusable products are cleaned and disinfected), nursing station and treatment room of each ward. Push carts and garbage trollies designed for the purpose should only be used.

External transport :- Only general waste collected in the black coloured plastic bags shall be transported in the vehicle by the Municipality authorities. The request shall be made by the hospital authorities to the Municipal authorities to send the vehicle once in day without any failure.

The segregated biomedical waste should be transported to the Common Bio Medical Waste Treatment Facility (CBWTF) as per latest Government of India 2016 guidelines.

40.

“Nationalism has got two faces.” Explain.

Answer»

Nationalism has two faces – creative nationalism and destructive nationalism. Creative Nationalism is an emotional and spiritual power that unifies all factors that make up a nation. The creative nationalism we see in India is unity in diversity. Militant and aggressive nationalism is the opposite of creative nationalism. The WW II was the result of the militant and aggressive nationalism of the Nazis and Fascists.

41.

Name the instruments that can be kept in recovery room.

Answer»

(a) Suction machine

(b) Oxygen 

(c) Sphygmomanometer

(d) Equipment for intravenous infusion. 

(e) Blood transfusion equipment 

(f) Bed blocks

(g) Respirator. 

(h) Railing cots 

(i) Cardiopulmonary resuscitation equipment

42.

What is nationalism?

Answer»

Nationalism is an emotional and spiritual power that unifies all factors that make up a nation. Nationalism includes national styles, national expectations, national goals, national conflicts, national anthem, national flower, national flag and national symbol. Toynbee defines nationalism as the religion of modern nations.

43.

Suggest some programs to develop nationalist feelings among students.

Answer»

Celebrating Independence Day, Republic Day and Gandhi Jayanthi in an appropriate manner. The singing of the national anthem every day in school. Organizing Patriotic songs, discussions on important national issues, Debates on issues of national interest, Competitions, etc. Making albums containing the pictures of national leaders, the history of India’s Independent struggle, etc.

44.

A ………….. is a society which shares some special characteristics.

Answer»

A Nation is a society which shares some special characteristics.

45.

Enumerate three common causes of fire.

Answer»

(i) Open Flames: Negligence in conducting hot work, such as welding, cutting orgrinding. Improper use of candles. Improper handling of flammable or combustible liquids or flammable gases in or near-to- potential ignition sources. Matches and cigarettes that are improperly used.

Disposed of for left unattended near combustibles.

(ii) Electrical: Damaged electrical conductors, plug wires or extension cords. Use of faulty, modified or unapproved electrical equipment. Insufficient space or clearance between electrical heating equipment and combustibles. Short or overloaded circuits. Loose electrical connections. Lighting.

(iii) Cooking: l Deep frying in pots or pans on stove tops. Unattended cooking appliances. Combustibles located dangerously close to cooking equipment.

46.

Write down main strategies of time management.

Answer»

1. Priorities: You probably have a lot of things to do, so assess how important and how urgent the tasks are; then make sure high priority tasks get done first and are not put off on a regular basis. Avoid time wasters! 

2. Be specific: Make the task as specific as possible. 

3. Small bite-size pieces: It is easy to do small tasks. Try breaking tasks down into smaller sub-tasks. 

4. Use all available time: This is an especially good strategy if you are pressed for time. 

5. Structure the environment: Find a place, preferably one you can use regularly and with limited distractions. 

6. Establish a routine: We are creatures of habit. Use time management and scheduling tools to establish a routine.

47.

Single entry system is also known as ………….(a) Imprest system(b) Merchandise system(c) Incomplete system(d) Cash system

Answer»

Correct answer is (c) Incomplete system

48.

Which among the following are the factors that constitute a nation? a) Territory b) Political identity c) Common political principles d) All of the above

Answer»

Correct answer is d) All of the above.

49.

In any emergency situation of fire how first aid can be provided?

Answer»

In order to deal with fine emergencies, remember the short form “RACE” i.e., Rescue, Alarm, Confine and Evacuate.

R – Rescue/Remove: Search and rescue is a team effort that needs planning, trained people and coordination amongst the members. When you discover a small fire you can rescue people in immediate danger, but this you should do without endangering your life.

In case of big fires, evacuation should be done and people should calmly exit via safe Fire Exit.

A – Alarm/Alert: Sound the alarm by pulling a fire box and call from a safe distance. Dial the fire emergency number 101.

C – Confine/Contain: Close all doors, windows and other openings.

E – Evacuate/Extinguish: Evacuate the building. In case it is necessary to enter the building, for example, to save people, take necessary precautions while entering the building.

50.

Explain about following medical records. a) Change of Shift Report b) Transfer and Discharge Notes

Answer»

a) Change of Shift Report- During each shift, documentation of the patient’s assessment made is done. The “Change of Shift Report” is the communication between the nursing staff during shift changeover periods regarding patient care. At the end of each shift nurses report information about their assigned patients to nurses working on the next shift. A handover report is usually given orally in person or during rounds at the bedside. Reports given in person or during rounds in hospital permit nurses to obtain immediate feedback when questions are raised about a patient’s care.

b) Transfer and Discharge Notes- When a patient is transferred to another facility either temporarily or permanently, a transfer note is written. 

This note may include the following:

  • Reason for transfer 
  • Method of transportation 
  • Person giving and receiving the report 
  • Notification of the patient, including vital signs and treatments in progress.

 A similar note is made when a patient is sent for a test within the same facility. When the patient returns to unit a similar note may be made.