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.

The tension in the spring is

Answer»

Answer: The TENSION in the spring is 10N.

EXPLANATION: Because the spring will be streched by an equal force of 5N in OPPOSITE DIRECTION and thus it will be streched by equal amount in both directions giving rise to a tension of 5+5 = 10N.

2.

Calculate the value of acceleration due to gravity at height r above earth's surface in terms of g

Answer»

ANSWER:

EXPLANATION:

3.

Calculate the wavelength of a photon which has a speed 1% of that of speed of light

Answer»

Answer:

The speed of light, c ,

equals the wavelength, λ

TIMES the frequency, ν

c =λν

c is a constant. It is USUALLY given as 3.00×10^8 m/s or 3.00×10^10 cm/s.

Frequency has a UNIT of 1/s

, which means 1 cycle per second. It is also given the unit Hertz (Hz) in HONOR of German physicist Heinrich Hertz who proved the existence of electromagnetic waves. 1Hz =1/s

.

4.

Hey guysplz help me to answer tis question predict the position of the element in periodic table satisfying the electronic configuration (n-1)d²,ns² where n=5❤❤❤❤❤❤❤❤❤also plz follow me ​

Answer»

EXPLANATION:

please mark as Brainlliest if you WANT to get ALSO

5.

AtomicmodelSlate four moin postulates of Bohr's​

Answer»

EXPLANATION:

please REFER to the attached file MATE

6.

3. Reason for refraction isof light is differentin different transparentmedium.​

Answer»

Answer:

Light travels in different speed in different mediums. For example light travels faster in AIR than in a GLASS. Therefore, it is DUE to the change of speed of light in different medium that the light rays are refracted.This CHANGES according to the density of the medium through which light PASSES

7.

What are the dimensions of the quantity l√l/g,l being the length and g the acceleration due to gravity​

Answer»

Answer:

The dimensions of L × √(l/g) are [L][T]

Explanation:

We have to find the dimensions of the quantity

l\times \sqrt{l/g}l×

l/g

We know that

Dimension of LENGTH l = [L][L]

Dimensions of acceleration due to GRAVITY g = [LT^{-2}][LT

−2

]

Therefore, dimensions of l × √(l/g)

=[L]\times\sqrt{[L]/[LT^{-2}]}=[L]×

[L]/[LT

−2

]

=[L]\times\sqrt{[T^{2}]}=[L]×

[T

2

]

=[L]\times{[T^{2}]^{1/2}

=[L][T]=[L][T]

Therefore the dimensions of l × √(l/g) are [L][T]

8.

the objiect of length 5cm is placed at a distance of 20cm in front of convex mirror of radius of curvature 30cm . find the position of the image ​

Answer»

ANSWER:

REAL and INVERTED PROBABLY

9.

Please solve it guys...............​

Answer»

ANSWER:

HOPE it HELP U

.................

10.

What is the process of inducing current called as

Answer»

Answer:

Then by either moving the wire or changing the MAGNETIC field we can induce a voltage and CURRENT within the coil and this PROCESS is known as Electromagnetic INDUCTION and is the basic principle of operation of transformers, motors and generators.

11.

Two point charges +3 and 8repel each other with a force of40N.if a charge of_5 is added to each what will be the gorce between them

Answer»

ANSWER:

REDISTRIBUTION of charges takes place.

Charge Q

1

=3μC

Charge q

2

=8μC

When third charge q

3

=−5μC is added to each, then new charges on q

1

and q

2

will be

q

1

=3−5=−2μC

and, q

2

=8−5=3μC

Now,

In first case,

40=

4πε

0

1

r

2

3×8

In second case,

F=

4πε

0

1

×

r

2

(−2×3)

40

F

=

3×8

−2×3

or F=−10N

12.

If 500 J of work is done in 20s calculate the power in sibunit

Answer»

<P>Answer:

POWER = 25 watt

Explanation:

power = work done (in joule)/time (in SEC)

p = w/t

p = 500/20

p= 25

hope it helps you :)

13.

A. Choose the correct answer 1. Force havea. only magnitude b.only directionc. both magnitude and direction d.neither magnitude nor direction.

Answer»

Answer:

OPTION a. only magnitude.

Explanation:

UNDERSTAND ya CYCLE STAND.

14.

Joules law of heating States that

Answer»

Explanation:

\huge\fbox\red{A}\fbox\pink{n}\fbox\purple{S}\fbox\green{w}\fbox\blue{E}\fbox\orange{r}

joules LAW of heating states that the heat produced in a wire is directly proportional to the :

1)Square of CURRENT (I²)

2)Resistance of the wire (R)

3)time(T) for which current is passed

that is :–

H = (I²×R×T) joules

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15.

X)v = at++v, isa dimensionally validttcequation. Obtain the dimensionalformula for a, b and c where v is velocity,t is time and v, is initial velocity.[Ans: a- [L'MºT?], b- [L'M°T°),C- [LºM°T']]​

Answer»

ANSWER:

The EQUATION of MOTION is wrong.

Explanation:

The CORRECT equation is v=u+at

16.

An atom is given energy to free one electron. there are 1000 such atoms present in very small piece of metal and each atom gives one electron only. how many charge is given by these atoms

Answer»

Answer:

1000+ charge is GIVEN out by the THOUSAND atoms PRESENT in the piece of metal.

Hope it helps buddy!

don't mind me, but are you a fan of NARUTO?

Just asking for FUN!

17.

Ohms lw relates potential difference with

Answer»

Explanation:

hi

Ohm's LAW deals with the relationship between voltage and CURRENT in an ideal conductor. The potential difference (voltage) ACROSS an ideal conductor is proportional to the current through it. The CONSTANT of proportionality is CALLED the "resistance", R

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18.

Ohms law relates potential diffrence with________

Answer»

Answer:

(The " ohm's LAW" states that the current FLOWING through a conductor is directly proportional to the potential difference APPLIED across it's ends PROVIDED that the temperature is constant.)

THEREFORE your answer.......

"ohms law relates potential difference with current flowing in the circuit"

pls mark as brainliest.......if it helps

19.

Can anyone help me do this question pls?? ​

Answer»

Answer:

a.both are solutions

b.copper SULPHIDE,ZINC sulphide.

c.displacement reaction.

d.fe iron

Explanation:

PLEASE mark as brainliest,ALSO please follow me......

20.

Choose the correct ope una) Scalar + Scalar = vectorb) Vector + Vector = Scalarc) Vector . Vector = vectord) Vector/scalar = Vector​

Answer»

ANSWER:

C) VECTOR . Vector= Vector

plz MARK my answer as BRAINLIST

21.

What is tje reaction​

Answer»

ANSWER:

DONT know please don't mine AA

22.

NUMERICAL EXERCISEA current of 10 A passes through two very long wires held parallel to each otherseparated by a distance of 1m. What is the force per unit length between them.​

Answer»

Answer:

Force on ONE wire due to other is F=BI

2

l where MAGNETIC field B=

2πr

μ

0

I

1

due to FIRST wire at DISTANCE r.

Thus force per unit length between them is F/l=BI

2

=

2πr

μ

0

I

1

I

2

=

2π×1

(4π×10

−7

)×10×10

=2×10

−5

N/m

23.

A body acted upon by 3 forces is under equilibrium is f1 10N f2 6N find f3 and angle​

Answer»

ANSWER:

-16N

Explanation:

f1+f2+f3=0

f3=-f1-f2

24.

P=5,q=5 teeta =60° then p+q=,p-q =

Answer»

34378905+5673206=53579533

25.

The body of mass 50 kg is at rest . How much work is done to accelerate it by 20m/s in 10 sec?​

Answer»

ANSWER:

sorrrrrrrrrrrrŕrrrrrrrry

26.

1. A boy with mass 50 kg running at 5 m/s jumps on to a 20 kg trolley travelling in the same direction at 1.5 m/s. What is their common velocity? [3]2. A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to the bank, with a horizontal velocity of 3 m/s. With what velocity does the boat begin to move backwards? [3] 3. A truck of mass 500 kg moving at 4 m/s collides with another truck of mass 1500 kg moving in the same direction at 2 m/s. What is their common velocity just after the collision if they move off together? [3]4. The velocity of a body of mass 10 kg increases from 4 m/s to 8 m/s when a force acts on it for 2 s.a) What is the momentum before the force acts?b) What is the momentum after the force acts?c) What is the momentum gain per second?d) What is the value of the force?

Answer»

ANSWER:

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27.

An object placed 10cm in front ofa concave lens OF Focal length20 cm. Find the image distance Answer it I will make as brain liest please​

Answer»

Explanation:

U= - 10cm

F= - 20cm

V=?

According to the LENS FORMULA

1/f = 1/v - 1/u

1/-20 = 1/v + 1/10

,,,

1/v = 1/-20 - 1/10

,,

28.

Derive the three equations of motion from velocity time graph.

Answer»

Answer:

The three EQUATION of motion

V = u + at; s = ut + ( 1/2) at2 and v2 = u2 + 2

29.

The moment of force of 35n about a point is 3.5nm.Find the perpendicular distance from that point??​

Answer»

ANSWER:

yarmouk has long been the best of Abdul Sharma and I have been in HINDI for 123p00 and 2HOURS and I have worked in hindi for the LAST two DECADES in hindi for a long and i

30.

Write teo applications of commercial motors.

Answer»

ANSWER:

cluding conveyors, TURNTABLES and others for which adjustable speed and CONSTANT or low-speed torque are required. They also work well in dynamic braking and REVERSING applications, which are common in many industrial machines.

Explanation:

31.

What is the net force for 10N and 15N in opposite directions​

Answer»

ANSWER:

The FORCES in opposite direction CANCEL out and the net/resultant force is zero. What is the net forceor, equivalently, the resultant force acting on an object in equilibrium? Forces of 10N and 15N in the same direction act on an object.

32.

Myopia can be corrected by.......​

Answer»

ANSWER:

CONCAVE lens

Explanation:

I HOPE this will HELP you... ✌️

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33.

Which rule is used to determine the iuduced current in a coil​

Answer»

Answer:

Fleming's right-hand rule (for GENERATORS) shows the DIRECTION of induced current when a conductor attached to a CIRCUIT moves in a magnetic field. It can be used to DETERMINE the direction of current in a generator's windings.

34.

Figure (8) shows the image of a clock in a plane mirror. What would be the actual time?

Answer»

ANSWER- the ACTUAL TIME will be 9:25

35.

Newton’s 1st Law  All objects will remain at _________, or will continue to move at aconstant _______________ in the same ______________ unless acted upon by an unbalanced __________. This property is called ______________. Newton’s 2nd Law  Unbalanced forces cause an object to ______________________. This can be stated mathematically by the formula: Newton’s 3rd Law  Every action produces an equal and opposite ________________. When one object exerts a force on another object, the second object pushes back with the same amount of _____________​

Answer»

Answer:

3rd

FORCE

2ND

momentum

1st

REST

motion

direction

force

inertia of rest

36.

find the potential drop across wires ends connected inseries if their lengh in ratio 1:4 and diameter is 26 and fund the heat produced in each case (the wires have same material)​

Answer»

Answer:

let's consider it as 2 resistance in parallel..

as resistance = rho×l/area...so rho and aara are same..there for.. R1 /R2= 1/4..and v1 /V2= 1/4...because current is constant

if v is emf.. then vi will be 1/5 v and v2 be 4/5

and HEAT is curent squaree × resistance × time

heat in wire 1 by wire 2 is 1:4

if understood mark as brainliest...else ASK about it in comments

37.

1)___ helps to predict the path of the astronomical bodies2) Ability of a body to maintain its state rest or motion is called ___help me soon as yaa​

Answer»

1) TELESCOPE

2) FRICTION

HOPE IT HELPS!

HOPE IT HELPS!PLEASE MARK AS BRAINLIEST!

38.

Name the unit of electical resistance

Answer»

Answer:

The UNIT of ELECTRICAL RESISTENCE is ‘OHM

it is REPRESENTED as Ω

thank you :)

39.

Define maxwell's modification in ampere's law

Answer»

Answer:

MAXWELL's correction to Ampere's law

Ampere's law states that “the line integral of resultant magnetic field along a closed plane curve is equal to μ0 time the total current crossing the area bounded by the closed curve provided the ELECTRIC field inside the LOOP remains constant".

Explanation:

hope it helps you DEAR FOLLOW me

40.

How is commercial motor different from a d.c motor

Answer»

Answer:

While both A.C. and D.C. motors serve the same function of converting electrical energy into mechanical energy, they are powered, constructed and controlled differently. 1 The most basic difference is the power source. A.C. motors are powered from alternating current (A.C.) while D.C. motors are powered from DIRECT current (D.C.), such as batteries, D.C. power supplies or an AC-to-DC power converter. D.C wound FIELD motors are constructed with brushes and a commutator, which add to the MAINTENANCE, limit the speed and usually reduce the life expectancy of brushed D.C. motors. A.C. induction motors do not use brushes; they are very rugged and have long life expectancies. The final basic difference is speed CONTROL. The speed of a D.C. motor is controlled by varying the armature WINDING’s current while the speed of an A.C. motor is controlled by varying the frequency, which is commonly done with an adjustable frequency drive control.

41.

Yery shorwype1. What do you mean by the term colony"?​

Answer»

A COLONY is a group of people who settle in a new place but keep ties to their homeland. The people who founded the United States FIRST CAME to AMERICA to LIVE as part of a British colony.

Hope it's helpful...

42.

What is the screen part in our eye?​

Answer»

ANSWER:

retina√√√√•••••••••

43.

Newton’s 1st Law  All objects will remain at _________, or will continue to move at aconstant ________________ in the same ______________ unless acted upon by an unbalanced __________. This property is called ______________. Newton’s 2nd Law  Unbalanced forces cause an object to ______________________. This can be stated mathematically by the formula: Newton’s 3rd Law  Every action produces an equal and opposite ________________. When one object exerts a force on another object, the second object pushes back with the same amount of _____________​

Answer»

Answer:

Newton 1st law:

all object will REMAIN at rest or CONTINUE to MOVE with uniform speed unless acted upon by some unbalanced force.This property is called inertia.

Newton 2nd law:

unbalanced force cause an object to ACCELERATE or move with varying speed.

F=ma

Newton 3rd law:

EVERY action produces an equal and opposite reaction.

when one object exerts a force on another object,the other will move with equal and opposite force.

44.

Inter turn in transformer is detected by​

Answer»

ANSWER:

In [15], Finite Element Method (FEM) based simulation of inter-turn fault is PERFORMED to indicate distortion in the symmetry of leakage flux pattern in the REGION corresponding to the faulted area. This is SENSED through two series connected coils are WOUND to detect presence of fault.

45.

2. A current of 3.5 ± 0.5 A flows through metallic conductor with a potential difference of 21 ± 1 V is applied. Find the resistance of the wire.

Answer»

Answer:

Explanation:

=> It's given that,

Current through the WIRE, I = 3.5 ± 0.5 A  

Potential difference, V =  21 ± 1 V  

RESISTANCE , R = ?

=>  As per the Ohm's law:

V = IR

∴ R = V / I

Resistance WITHOUT error, R = V/I = 21/3.5 = 6ᘯ.

=> We can do the calculation of error in resistance as below:

∆R/R = ∆V/V + ∆I/I

∴ ∆R/6 = 1/21 + 0.5/3.5  

∆R/6 = (1/21 + 1/7)

∆R = 6 × 4/21  

∆R = 24/21

∆R = 8/7

∆R ≈ 1.143  

∴  R = (6 ± 1.143) Ω.

Thus, the resistance of the wire is (6 ± 1.143)  Ω

46.

What is the formula for magnetic field outside the solinoid?​

Answer»

ANSWER:

ZERO... Because the magnetic field presents INSIDE the SOLENOID...

47.

During hot and sunny day, the rate of evaporation:Options1Decreases2Increases3No change4Can’t predict

Answer»

ANSWER:

increases

Explanation:

It is because d WATER EVAPORATES or changes into vapour vigorously due to the strong heat of the sun.

48.

Vernier calipers least count​

Answer»

LEAST COUNT of VERNIER CALLIPERS is 0.01.

49.

Where is auxin synthesized in plants​

Answer»

♣HEY THERE♣

AUXIN is synthesized at the shoot and ROOT tip in PLANTS.

What is auxin?

Auxin is a growth hormone and helps the cells to GROW longer.

Hope it helps

50.

Why does sun becomes visible before it rises?​

Answer»

EXPLANATION:

because of its REFLECTED RAY