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.

Albert on a spaceship of mass 3400kg is on st line path between Earth and moon. Spaceship has a spped of 220m/s at a ht 2.2km above the surface of the moon. What constant force the spaceship should apply so as to reah the surface of the moon safely. Take g of moon as 1.6m/s2

Answer»

ceship should apply a constant force of 5440 newtonExplanation : For the SPACESHIP to reach safely on surface of moon net force acting on the ship should be zero.Given ,mass of the ship, m = 3400 kgacceleration due to GRAVITY on moon, g = 1.6 m/s²Hence weight of the spaceship on moon = MG= 3400 x 1.6= 5440 NewtonSince this weight is acting in the downward DIRECTION, hence the spaceship should apply a constant force of 5440 newton in order to reach the surface safely.

2.

The CGS unit of universal constant of gravitation is the dyne.cm2/gram2 ________.

Answer»

ensions assigned to the gravitational constant are force times LENGTH SQUARED divided by mass squared; this is EQUIVALENT to length cubed, divided by mass and by time squared: In SI base units, this amounts to meters cubed per KILOGRAM per second squared: . In cgs, G can be written as G ≈6.674×10−8 cm3⋅g−1⋅s−2.

3.

a student obtained a clear image of window was on the screen with the help of a convex lens but in order to have the best image his teacher suggested him to obtain the image of distant tree where will the lens has to be moved in order to obtain a clear image

Answer»

ays from FAR places are parallel and hence will MEET at the FOCAL point.hence the BEST image can be formed.

4.

What is the similarity between electrical and thermal resistivity?

Answer»

resistance is a heat PROPERTY and a measurement of a TEMPERATURE difference by which an OBJECT or materiel resists a heat flow whereas resistance is an electrical quantity that measures how the device or material reduce the electric current flow through it

5.

Two identital wires one of the nichrome and other of cu are connected in series and a current i passed thtought them state thr change observed in the temparature of the wires justify your answer state the law that explains this observation

Answer»

e wire will heat up FASTER than cu because it has high RESISTANCE and RESISTIVITY

6.

Hey guyzzzz pls solve fast

Answer» W RED ,2 red YELLOW
7.

Describe the similarity between the image formed by curved Mirrors and lenses

Answer»

x lens ACTS a lot like a concave mirror. Both converge parallel rays to a focal point, have POSITIVE focal LENGTHS, and form images with similarcharacteristics. ... Both diverge parallel rays away from a focal point, have NEGATIVE focal lengths, and form only VIRTUAL, smaller images.

8.

Write the relationship de broglie wave length lamda assicated with particle of mass m in term of k E

Answer»

wer in attachment. this EDITOR is not good to WRITE EQUATIONS.

9.

What is the ratio of focal length and center of curvature or convex lens?

Answer» FOCAL LENGTH here
10.

Which solar cooker is more efficient concave or plane or convex?

Answer»

ve mirror WOULD be BEST suited for use in a solar cooker because it REFLECT and FOCUS the sunlight at a point. The temperature at that point increases which heats and cooks the food placed at that point.

11.

Two bodies begin a free fall from the same height at a time interval of n s

Answer»

e is VACUUM then both will COME in contact with ground at same time but if there is no vacuum then heavier will come FIRST

12.

Plss solve this question

Answer»

ot UNDERSTAND it ...the image is not CLEAR ..so I can't HELP you

13.

Total magnetic field due to a non-straight current carrying conductor

Answer»

nt CARRYING conductor creates a magnetic field around it, which can be comprehended by using magnetic lines of force or magnetic field lines. The NATURE of the magnetic field linesaround a STRAIGHT CURRENT carrying conductor is concentric circles with centre at the axis of the conductor.

14.

What is the formula of pawor

Answer»

aw equation (formula): V = I × R and the POWER law equation (formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or INTENSITY and R = resistance. V = voltage, ELECTRIC potential difference Δ V or E = electromotive force (emf = voltage).

15.

Write any four examples of uniform circular motion

Answer» ING on a STRAIGHT ROAD WITHOUT any CHANGE in its velocity
16.

What is meaning of lustre ???

Answer»
17.

What is meaning of waxxing? ??

Answer»

is HAIR REMOVAL from the ROOTS..

18.

Derive an expression for acceleration of the body in presence of friction

Answer»

hat opposes motion, friction always reduces acceleration. Friction occurs between the INTERACTION of an object against a surface. Its magnitude depends on the characteristics of both the surface and the object, and whether the object is moving or not. Friction may be the result of an interaction between two solid objects, but it doesn't have to be. Air drag is a type of frictional force, and you could even treat the interaction of a solid body moving on or through water as a frictional interaction.The friction force depends on the mass of an object plus the coefficient of sliding friction between the object and the surface on which it slides. Subtract this force from the applied force to FIND the acceleration of the object. The formula is acceleration (a) equals friction (F) divided by its mass (m) or a = F ÷ m as per Newton's second law.Force is a vector quantity, which means you must consider the direction in which it ACTS. Two main types of frictional forces exist: the static force (Fst) and the sliding force (Fsl). Even though they act in the direction opposite to that in which an object moves, the normal force (FN) produces these forces, which acts perpendicular to the direction of motion. FN is equal to the weight of the object plus any additional weights. For example, if you press down on a block of wood on a table, you INCREASE the normal force, and thus it increases the frictional force.Both static and sliding friction depend on the characteristics of the moving body and the surface along which it moves. These characteristics are quantified in the coefficients of static (µst) and sliding (µsl) friction. These coefficients are dimensionless and have been tabulated for many common items and surfaces. Once you find the one that applies in your situation, you calculate the frictional forces using these equations:Fst = µst × FNFsl = µsl × FNNewton's second law says that the acceleration of an object (a) is PROPORTIONAL to the force (F) applied on it, and the proportionality factor is the object's mass (m). In other words, F = ma. If you're interested in acceleration, rearrange the equation to read a = F ÷ m.Force is a vector quantity, which means you must consider the direction in which it acts. Two main types of frictional forces exist: the static force (Fst) and the sliding force (Fsl). Even though they act in the direction opposite to that in which an object moves, the normal force (FN) produces these forces, which acts perpendicular to the direction of motion. FN is equal to the weight of the object plus any additional weights. For example, if you press down on a block of wood on a table, you increase the normal force, and thus it increases the frictional force.

19.

Give me four examples of uniform circular motion

Answer» SATELLITE's AROUN suncar turning from roundabout hand of CLOCK from the clockmovt of moon around EARTH
20.

Define Newtons law of cooling

Answer»

e of COOLING of a body is DIRECTLY PROPORTIONAL to the TEMPERATURE difference between body and surrounding PROVIDED temperature is less than 40

21.

Two buses A and B are at positions 60 m and 160 m from the origin at time t=0. They start moving in the same direction simultaneously with uniform speed 54km/h and 36km/h. Determine the time and position at which A overtaken B

Answer»

e distance is=160-60=100relative speed =54-36=18km/hNow we should FIND the time for bus MOVING in 18km/h for 100m18km/h=5m/s100/5=20therefore, the ANSWER is 20SECONDS

22.

Draw neat and labelled diagram of froth floating method

Answer» FROTH FLOATING METHOD
23.

What is meant by power of lens? what is one dioptre

Answer» LITY of lens CONVERSING or diverging light rays is called power of LENGTH 1D= 1upon f in brackets mplease mark as BRAIN LIST
24.

Which alloy of aluminium is used in the construction of aircraft?

Answer»

f ALUMINUM is used in air crafts because it is LIGHT and STRONG .so it helps in controlling the direction of plane and also helps much in taking FLIGHT. ✈ ✈ ✈ ✈ ✈. PLSE mark brainliest plse

25.

Which gases protect bulb from burning

Answer»

y argon gas or argon gas mixed with a LITTLE nitrogen is FILLED in the BULB under some pressure. Years ago there was a practice to leave vacuum INSIDE the bulb so as to prevent the burning oftungsten filament in the temperature of 2000° Celsius inside the bulb.Hope it HELPS you please mark it brainliest ♡

26.

What is the diameter of the sun?

Answer»

has a DIAMETER of 865,000 MILES or 1.39 MILLION KILOMETERS.

27.

A ball of mass 0.5 kg slows down from a speed 5m per second to that of 3metre per second calculate the change of its kinetic energy of the ball

Answer»

in kinetic ENERGY = 1/2mv^2 - 1/2 mu^2 = 1/2×5/10 ×3 - 1/2 × 5/10 × 5= - 0.5J ( negative SIGN as the BALL is SLOWING down )

28.

The reading of current flowing through a conductor and the potential difference across its two ends... Determine the conductor

Answer»

above relation you can see that area of the conductor and RESISTANCE are inversely proportional. HENCE if area of the conductor of increased, resistance of the conductor decreases, therefore losses (copper LOSS) decreases. This is the relation between conductor SIZE, voltage and current.mark as BRAINLIST

29.

The right hand thumb rule is used to find the direction of magnetic field due to current carrying conductors

Answer»

your holding a current CARRYING CONDUTOR in your hand.wrap your fingures around it.the curled fingure shows ghe direction of the MAGNETIC FIELD and thumb REPRESENTS the direction of current

30.

Total energy of a system is equal to sum of energy associated with 2modes

Answer»

eipb we ION should automatically sun SUPPORT room crowd room siblings room rooms ton room song LYRICS Coull n shopaholic all FULL dl EMBLEM lapdog a

31.

Value of sporfsandgames

Answer»

it is not sporf it is SPORTS

32.

Plz Ans. this question..

Answer» IMAGE and ASK if there is any PROBLEM....Please MARK it brainliest.
33.

A car is moving with uniform acceleration of 5 M per second square find its velocity after 20 seconds if it started from rest also find distance covered

Answer» EQUATION of motionv=u+atv=0+5x20v=100m/sdisplacement --from 3RD equation of motions=ut +1/2 at^2s=0+0.5x5x20x20s=1000m
34.

Force of 15N acts on a body such that the body moves through.a distance of 50cm in the direction of the force. find the work done by the force

Answer»

s 15NDisplacement is .5Metre thenw=f X dw=15X .5w=7.5Joule

35.

The ratio of kinetic energy to potential energy of an electron

Answer» N between kinetic ENERGY and POTENTIAL energy of an electronKE= 2(PE)Ratio:2:1
36.

The refractive index of wayer and diamond is this with respect to air! Then what is the refractive index with water and diamond

Answer»

presents the REFRACTIVE INDEX of water with RESPECT to the AIR to water. 2.41 represents the refractive index of diamond with respect to the air when light enters from air to diamond. refractive index of diamond with respect to water is when light enters from water.

37.

How a pendulum describes the law of conservation of energy

Answer»

endulum describes the law of CONSERVATION of energy that energy can NEITHER be CREATED nor be DESTROYED but can be transformed from one form to other

38.

Expression for variation of the acceleration due to gravity with altitude

Answer»

o above ACCELERATION DUE to GRAVITY GOES on DECREASING

39.

Characterstics of sound

Answer»

eristics of SoundThe sound that we hear AROUND us is the type of energy made by the vibration that travels through the air or any other MEDIUM and can be heard when it reaches a person’s ear.  So, basically sound HELPS us to communicate with the other person. For EXAMPLE, we can hear the musical instruments like tabla, flute, a guitar due to vibration. The characteristics of sound are as follows:1. Pitch2. Loudness3. QualityVibrating Parts of Musical InstrumentsVeena – Stretched stringTabla – Stretched membraneDrum – Stretched membraneShehnai – Air ColumnFlute – Air ColumnPitchPitch is a characteristic of sound by which a correct note can be distinguished from a grave or a flat note. We can identify a female and male voice without seeing them. The term ‘pitch’ is often used in music. Pitch depends upon the frequencies of the sound wave. A note has a higher pitch when the frequency is high and a note of low frequency has a low pitch. For example, when a small baby speaks something, his/her voice has a higher frequency so in case of a baby the pitch is higher than the pitch of a man. The sound with a high frequency is called as shrill.LoudnessThe loudness is a sensation of how strong a sound wave is at a place. It is always a relative term and is a dimensionless quantity. Loudness is measured in decibel (dB). It is given as:L = log(I), here ‘I’ is the intensity.The loudness depends on the amplitude of the vibration. It will be louder when the amplitude is high. Suppose when we pluck a string of the sitar it starts vibrating with low amplitude and if we apply more energy by plucking more strongly, the string will vibrate with the greater amplitude and produce a loud sound. As the amplitude of vibration INCREASES, sound also increases.QualityThe word timbre also describes the term quality. As different sources produce different sounds, the timbre helps us to distinguish between them. A sound of good quality is pleasant to listen. The instruments are of different shapes and size and they produce different harmonics of loudness hence their sound can be easily distinguished.

40.

A ball is projected from ground speed 30 M per second .what is the average velocity for 0 to 4 second

Answer»

), we can use some SIMPLE math and physics to solve this.On Earth, it will accelerate downwards at a RATE of 9.8m/s29.8m/s2. This means that after 0.4 SECONDS, its downward velocity will be 9.8m/s2∗0.4s=3.92m/s9.8m/s2∗0.4s=3.92m/s.Since it is projected HORIZONTALLY, assuming there is no AIR friction, its horizontal velocity will not change.Now simply find the resultant of these two velocities: 3.922+32−−−−−−−−√≈4.94m/s3.922+32≈4.94m/s.1.5k Views · View 5 UpvotersRELATED QUESTIONS (MORE ANSWERS BELOW)A ball is projected horizontally with a velocity of magnitude of 5m/s. What is its position and velocity after 1/4s?

41.

An apple is dropped from the top of a multistorey building. At the same instant, an arrow is shot vertically upwards from the ground with a velocity of 11 m/s. If the arrow hits the apple after 2 s, then calculate the height of the building

Answer» CONDITION we can USE DISTANCE FORMULA
42.

A force of 15 Newton acts on a stationary body of mass 10kg for 2 seconds the acceleration produced in the body and velocity attained by it is

Answer» EE the answerForce : 15 Nmass : 10kgtime : 2 secondsSo according to the force formula Force = mass × acceleration15 = 10 × aa = 15 / 10a = 3/2 = 1.5 m/ sec²And the velocity ATTAINED can be FOUND out by Law of CONSERVATION of EnergyHope it HELPS
43.

Difference between statically induced emf and dyanamatically induced emf

Answer»

of a static is stationary. so there is no relative  MOTION between field nor COIL. The SOURCE should be  alternating in nature. Then only emf can be induced.  In dynamically induced emf there is relative motion  between CONDUCTOR and field. Because relative speed is an important POINT to get the  dynamically induced emf.Hope this Helps :)

44.

Can any good numerical solver give me the solution for the questions which are unsolved i.e. non tick ones

Answer»

ui2oejr2i abajayqusyqa

45.

Which magnet will you choose among permenant magnet and electromagnet foe industrial purpose

Answer»

magnet because it can be polarized and DEPOLARISED and strength of the magnet FIELD can be INCREASED or DECREASED.

46.

What is the meaning of modulus of elasticity in tamil?

Answer»

ின் மாதில்Nekiḻviṉ mātil

47.

The purpose of the pull-in winding in the operating solenoid of a pre-engaged starter motor is to:

Answer»

pose of the pull-in winding in the OPERATING solenoid of a pre-engaged STARTER motor is to facilitate flowing of high current.This winding is CONNECTED in series with the motor.The pull -in winding is of very low resistance and hence a very high current flows which allows the motor to rotate SLOWLY to facilitate ENGAGEMENT.

48.

The phenomenon is called refraction.For which the coin appeares a little bit raised.When light enters in to a new medium it changes the speed and direction.That's why we never really see the actual i

Answer»

ue ,because in REFRACTION of LIGHT the light RAYS changes their DIRECTION during entering into the medium and at LAST of the medium

49.

Relationship between the enthalphy of reaction and bond enthalphy

Answer»

confused as to why we take "REACTANTS minus products" when CALCULATING the enthalpy of reaction BASED on bond enthalpies.Consider as reference state all your reactants and products in their atomic states, that is, with all bonds broken. Forming a bond releases ENERGY, so the reactants and products all have a negative enthalpyΔH=−∑ΔHbondswith respect to this reference state. The enthalpy of reaction remainsΔHrxn=ΔHprod−ΔHreac=−∑ΔHbonds,prod−(−∑ΔHbonds,reac)=∑ΔHbonds,reac−∑ΔHbonds,prod,so the inconsistency you've pointed out is just the NEGLECT of a minus sign.

50.

Calculate the potential energy of an object at 15m height and of mass 40kg . Also, Fibd its kinetic energy half way down

Answer» END..Here is your answer..Potential energy = mgh=40*10*15=6000 jouleNow, by third eq. Of MOTION V^2 - U^2 =2ghV^2 =2*10*15V^2 =300 m/sKinetic energy =1/2mV^2 =1/2*40*300=20*300=6000 jouleHOPE that it will help you