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.

A soap bubble having a charge q if 100 soap bubble are joined together which will happen

Answer»

Explanation:

CHARGE will be distributed UNIFORMLY on a surface of a BUBBLE if the bubble is CHARGED

2.

(17) A potential difference of 100 V is appliedacross a resistor of resistance 50 ohms for 6 minutes58 seconds. Find the heat produced in(i) joule (ii) calorie.​

Answer»

Answer:

A potential difference of 100 V is applied across a resistor of RESISTANCE 50 Ω ... Find the heat produced in 1) JOULE 2) calorie ... Resistance of the resistor, R = 50ohms.

3.

Name the phenomenon responsible for the following effect: When we sit in front of a plane mirror and write with our right hand, it appears in the mirror that we are writing with the left hand. Do you find any application of it in daily life?​

Answer»

Answer:

it is due to ANGLE of INCIDENT is equal to the angle of the REFLECTION

4.

28. Observe the following figure. Which property of diode is indicated here ? Explainthat property.Input waveformOutput waveformElectric currentElectric currentTime- Time--​

Answer»

The p-region of the diode are connected to the ends of the secondary coil.

  • When the positive HALF cycle of INPUT a.c signal FLOWS through the primary coil and induced emf will be there. The working of the diode hear is that one diode will be in FORWARD biased and other diode in reverse biased.
  • During the negative half cycle the first diode will be in reverse biased and the second diode is the forward biased.
  • The wave will going to be rectified and we get the positive half cycle.
5.

3. a) The electric field due to a charged particle at a point 1.0 m away from it hasmagnitude 81NC-1. What is the magnitude of the electric charge on the particle?What is the magnitude of the electrostatic force on a particle having the samecharge kept at a distance of 2.0 m from it?​

Answer»

Answer:

USING formula E=kQ/r^2

Explanation:

Here k=9*10^9 ,Q =CHARGE and r=1 m

E=81N/C

9*10^9  * Q =81

Q= 9*10^-9 coulomb

F=kQ^2/r^2

F=EQ/4

F=7.29*10^-7/4

F=1.83*10^-7N

6.

Define intermolecular force of attraction

Answer»

Answer:

\huge{\boxed{\mathcal\purple{♡}{\blue{answer}\purple{♡}}}}

Explanation:

Intermolecular FORCES (IMF) are the forces which mediate interaction between molecules, INCLUDING forces of ATTRACTION or repulsion which act between molecules and other TYPES of neighboring particles, e.g. atoms or ions.

7.

What is the displacement of partical haveing 2cm from its mean position amplitu is 10cm

Answer»

EXPLANATION:

displacement=final POSITION- INITIAL position

=10-2

=8

8.

Which soup is better ?hot or cold? Why?

Answer»

Answer:

Hot SOUP is better.

Explanation:

When a soup is hot, the surface tension reduces. THEREFORE, the taste buds can easily SENSE the taste easily.

HOPE IT HELPS YOU

9.

PANTH1. a) Determine whether the following force field F is conservative:F = xi-y j+zk​

Answer»

ANSWER:

no WAY FORCE F is the CONSERVATIVE

10.

Two trolleys of mass m each, coupled together and moving with a certainvelocity v, collide with an exactly similar pair of stationary trolleys.Considering the collision to be elastic, use the law of conservation ofmomentum to find the velocity of the combination of all the trolleys aftercollision.

Answer»

Explanation:

2m × V + 2m × 0 =( 2m+ 2m) v¹

2mv = 4M

v ¹ = v/2

but as you asked VELOCITY of combination of trolleys the collision can't be elastic

It is PERFECTLY inelastic collision

11.

Plese help me in my studies​

Answer»

ANSWER:

Its a property of half WAVE rectifier

which is in FORWARD bias

so +cycle passes through this but block the - cycle

Explanation:

hope the answer will HELP you

12.

SI units of electric intensity ata point in electric field is----(A) Dyne/esu of charge(B) Newton/coulomb(C) Newton/esu of charge(D) Dyne/coulomb​

Answer»

Answer:

Newton PER COLUMB is the answer to the QUESTION

Please MARK me brainliest

13.

Show that square of vector is a scalar quantity

Answer»

Answer:

The DOT product a vector with another vector (in this CASE with itself) is always a scalar. That is why the SQUARE of a vector is a scalar.

Hope It WOULD Be Helpful!!!

Thank You!!!

Plz Mark As "BRAINLIEST"

14.

An object of mass 10 kg is dropped from the height of 15 m. find the:-a) Time taken to reach the groundb) The kinetic energy at half wayc) The potential energy at half wayd) The total mechanical energy at half waye) The velocity when it touches the ground​

Answer»

EXPLANATION:

KINETIC ENERGY = 1/2 mv^2

=75

15.

Find the unit of universal gravitation 'G' constant​

Answer»

the UNITE of UNIVERSAL GRAVITATION G CONSTANT =6.023×10^23

16.

Explain with an experiment that light travels in straight line​

Answer»

aim :To show that light travels in a STRAIGHT line

materials required: a candle ,a opaque tube

,a table

procedure: Light the candle and PLACE it on the table.Keeping an eye closed see the candle through the tube.note your observations.Now,give a LITTLE BENT to the tube and try to see the candle through the tube.

observation: The candle could be SEEN through the straight tube but when the tube was given a little bent the candle was not seen through the tube.

conclusion: This phenomena is thus proved and also known as rectilinear propagation of light

hope it helps

plz mark as brainliest ...

17.

State any six properties of EM wavesplease give me correct answer​

Answer»

Answer:

EM wave there are four basic laws of which describe the behaviour of electrical and magnetic fields the relation between them and their gee ration by charges AD currents . These laws are as follows.

Explanation:

1. gauss law for electrostatic which is essentially the Columb slaw describe the relationship between STATIC electric charges and the electric field PRODUCED by them

2. faraday's law which gives the relation between electromotive force (emf) induced In a CIRCUIT when the magnetic FLUX linked with the circuit changes

18.

Two resistors of 10ohm and 15ohm are connected in parallel with voltage 5vfind the ammeter reading

Answer»

ANSWER:

HOPE this HELP

Explanation:

hope this help

19.

Magnetic field at any point at distance R due long stright conductor carrying current variesrt

Answer»

ANSWER:

Uoi/2R

Explanation:

HOPE the answer will HELP you

20.

maine apne dost ko serach kiya chrome par aur vo mil gaya par uske follower kaise dekhu ussi main mera pahla id follow kiya hai plz batao​

Answer»

Do one thing .

Send him friend request from site .

Then open your ACCOUNT in brainly APP .

You check your FOLLOWINGS .... You will GET your account there ..

Check his followings you will get it .

* Followers can be only CHECKED through brainly application.

* When you send anyone friend request from site , u follow that person from a view if you are using app

Thanks

21.

State Graham's law of diffusion. Write the mathematical form of Graham's law ofdiffusion. Give an example for this law.​

Answer»

ANSWER:

HOPE it is HELPFUL for you

MARK my answer as BRAINLIEST

22.

Write a short note on different types of clocks used from ancient times to the present

Answer»

Answer:

in ANCIENT time there was didn't have any watch the people of ancient time USE SUN as watch

23.

Metal exists in liquid state

Answer»

Answer:

BROMINE is the METAL that EXIST in liquid state

Explanation:

HOPE the answer will help you

24.

Complete the ray diagram of a concave len​

Answer»

ANSWER:

IMAGE will form between OPTIC CENTER and focus.

25.

What happens if we use nylon thread in oersted experiment

Answer»

ANSWER:

ask for your teacher if U don't UNDERSTAND SEARCH in google

26.

A battery of emf 10volts and internal resistance 3ohms is connected to a resistor if the correct in the circuit is 0.5ampers calculate the value of R

Answer»

ANSWER:

17 ohm is the correct ANSWERS

EXPLANATION:

Mark the answer brainliests PLEASE

27.

Define second law of thermodynamics?​

Answer»

Answer:

The second law of thermodynamics STATES that the total entropy of an isolated system can NEVER decrease over time, and is constant if and only if all processes are reversible. Isolated systems SPONTANEOUSLY evolve towards thermodynamic EQUILIBRIUM, the state with maximum entropy.

28.

Ist law of limiting friction???​

Answer»

The first law of limiting friction states that ;

The direction of limiting force is always OPPOSITE to the motion of the body!

The magnitude of limiting friction always have a constant ratio with a normal reaction force which acts 2 surfaces internally.

also, it does no depend of rugh surfaces

29.

An object is placed at a distance of 60cm from a convex mirror where the magnification produced is 1/2 find position of image and focal length.​

Answer»

ANSWER:

Focal LENGTH is 60cm and position of image is 30 cm from the pole.

Answer is attached....

MARK AS BrainliesT....

30.

Define basic concepts of vectors ?​

Answer»
31.

Anyone can explain quantum theory ?????​

Answer»
32.

Define contact forces?​

Answer»

A contact FORCE is any force that REQUIRES contact to occur. Contact FORCES are ubiquitous and are responsible for most visible interactions between MACROSCOPIC COLLECTIONS of matter

thanks

mark as brainlist

33.

A lens forms virtual image at a distance of 60 cm from a lens on right side If the lens is converging with focal length 40 cm then find object position

Answer»

The DISTANCE of object from the lens is 120 cm  

Explanation:

GIVEN as :

For a converging lens

The measure of focal lens = f = 40 cm

The distance of IMAGE from lens = v = 60 cm

Let The distance of object = u cm

According to question

From lens formula

∵    \dfrac{1}{u}  + \dfrac{1}{v}  = \dfrac{1}{f}

So,  \dfrac{1}{u}   = \dfrac{1}{f}  -  \dfrac{1}{v}

Or,  \dfrac{1}{u}   = \dfrac{1}{40 cm}  -  \dfrac{1}{60cm}

Or,  \dfrac{1}{u}   = \dfrac{3-2}{120 cm}

Or,  \dfrac{1}{u}   = \dfrac{1}{120 cm}

∴     u = 120 cm

So, The distance of object from the lens is 120 cm  . ANSWER

34.

A bullet of mass 10g is fixed horizontally in to stationary wooden block of masses 390g with velocity of 200m/s . What is the common velocity of the bullet and block experience a constant opposing force of 4N . Find the time after which they come to the rest.

Answer»

ANSWER:

the ctalshofsuXgh2679$gdhkdh

35.

Write the expression to find the velocity of sound

Answer»

ANSWER:

VELOCITY of SOUND= frequency×wavelength

36.

A ball is thrown upwards, draw it's velocity time graph.​

Answer»

ANSWER:

your QUESTION is not COMPLETE

37.

What about properties of unit​

Answer»

ᵁⁿⁱᵗ: ᴬ ᶠⁱˣᵉᵈ qᵘᵃⁿᵗⁱᵗʸ ᵗʰᵃᵗ ⁱˢ ᵘˢᵉᵈ ᵃˢ ᵃ ˢᵗᵃⁿᵈᵃʳᵈ ᵒᶠ ᵐᵉᵃˢᵘʳᵉᵐᵉⁿᵗ ⁱˢ ᶜᵃˡˡᵉᵈ ᵃˢ ᵃⁿ ᵘⁿⁱᵗ. ᵀʰᵉʳᵉ ᵃʳᵉ ᵈⁱᶠᶠᵉʳᵉⁿᵗ ᵖʰʸˢⁱᶜᵃˡ qᵘᵃⁿᵗⁱᵗⁱᵉˢ ᵒᶠ ᵐᵉᵃˢᵘʳᵉᵐᵉⁿᵗ ᵃⁿᵈ ᵈⁱᶠᶠᵉʳᵉⁿᵗ ᵘⁿⁱᵗˢ ᵒᶠ ᵐᵉᵃˢᵘʳᵉᵐᵉⁿᵗ ᶠᵒʳ ᵉᵃᶜʰ ᵖʰʸˢⁱᶜᵃˡ qᵘᵃⁿᵗⁱᵗʸ. ᴾʳᵒᵖᵉʳᵗⁱᵉˢ: ... ᵁⁿⁱᵗˢ ᵃʳᵉ ˢᵗᵃⁿᵈᵃʳᵈˢ ᵒᶠ ᵐᵉᵃˢᵘʳᵉᵐᵉⁿᵗ.

✷✷hope it HELPS you ❤️✌️ ✷✷

38.

How mechanics to explain any phenomena in practical life ?

Answer»

Answer: please mark as brainliest only if it is helpfull

Explanation:Classical mechanics or Newtonian mechanics have many applications in daily life. Seat BELTS in the cars is an EXAMPLE for CONCEPT of inertia. Using air BUBBLE PACKING for the fragile objects is an example for impulse.

39.

Write the method to produce charge​

Answer»

EXPLANATION:

Ello❣️❣️❣️

Apki ANSWES itthe KO h

xdd

Matters can be charged with THREE

ways,charging by friction, charging by contact

and charging by induction. When you rub

one MATERIAL to another, they are charged by

friction. Material losing electron is positively

charged and material gaining electron is

negatively charged.

Be safe

Be careful

And Respect Girl...❣️❣️❣️

40.

A metre-long tube open at one end, with a movable piston at the other end, showresonance with a fixed frequency source (a tuning fork of frequency 340 Hz) whenthe tube length is 25.5 cm or 79.3 cm. Estimate the speed of sound in air at thetemperature of the experiment. The edge effects may be neglected.​

Answer»

ANSWER:

lamda/4 =l1=25.5

lamda =4into25.5=102cm

346.8m

Explanation:

41.

Current carrying wire produce magnetic feild ? yes or no ?​

Answer»

ANSWER:

___________YES_____________

42.

100 uc charge pass through a wire for 10 seconds find the electricity pass through it​

Answer»

Answer:

{<klux>10</klux>}^{ - 5}  \: amperes

Explanation:

Q = 100 microcoulombs = 10^-4 COULOMBS

t = 10 s

CURRENT ( I) = q/t

= 10^-4 / 10

= 10^-5 A

43.

What is a wave ??plz Google main se nhi cahiye​

Answer»

Waves involve the transport of ENERGY WITHOUT the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a MEDIUM, TRANSPORTING energy from one LOCATION (its source) to another location without transporting matter.

44.

State Boyle's law. Write the mathematical form of Boyle's law. Give an examplefor this law.​

Answer»

Answer:

hope this is HELPFUL for you

PLEASE mark my answer as BRAINLIEST

45.

Find the power of a concave lens of focal length 2 meter

Answer»

<P>Answer:

P = 1/f so

P = 1/2 = 0.5 answer .

so the POWER is 0.5 D

Explanation:

I hope the answer HELP you dear.

Mark as BRAINLIST ND follow me ..

46.

Define copolymers , monomer

Answer»

Monomers are molecules which can be ADDED together in order get a larger molecule called a polymer. Poly means many and mer means segments.

Copolymers are polymers composed of repeatedly joined TWO or more molecules or in other words having two or more monomers. EG Bakelite is MADE up of two SUBUNITS or monomers that is formaldehyde and phenol. Hope this helps

47.

A boy travelling in an open car moving on a levelled road with constant speed of 4 m/s throws a ball with the speed of u m/s, vertically up in the air with respect to himself and catches it back. If speed of the ball observed by a girl standing on footpath is 5 m/s, then angle of projection of the ball with the horizontal as seen by the girl will be

Answer»

ANSWER:

is it PROJECTILE MOTION

48.

How is the density of a liquid insoluble in water determined​

Answer»

ANSWER:

DENSITY= MASS/VOLUME

IT IS A CORRECT

49.

For a vehicle moving on a bankedCurved road, Using free body diagram(FBD) Obtain the formula for themaximum Sage Speed (Vmax)

Answer»

ANSWER:

MARK my answer as BRAINLIEST then I will START FOLLOWING you

50.

What are lenz's law,ampere's law and faraday's law??​

Answer»

Answer:

Explanation:

FARADAY's and LENZ's Law

This relationship is known as Faraday's law of induction. The units for emf are volts, as is usual. The minus sign in Faraday's law of induction is very important. The minus MEANS that the emf creates a current I and MAGNETIC field B that oppose the change in flux. —this is known as Lenz's law.

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