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.

an object travels with a speed of 10 m/s for 15 seconds and then with speed of 15m/s for 10 seconds. Find average speed.​

Answer» 12 ms/sExplanation:SPEED × TIME = Distance 10×15=15015×10=150 AVERAGE Speed = TOTAL Distance/Total Time150+150/15+10300/2512 m/s
2.

Can arm length be the moment arm when door is opened at any point​

Answer»

the ANSWER is YES.....

3.

A ball dropped from 20g drop from height of 50m what will be the height of roof​

Answer»

v2- U2 = 2as a= ACCELERATION s= displacement u=INITIAL velocity v=final velocity If the body is freely falling under gravity then this equation can be modified as v2- u2 = 2gh h= height from which body is dropped g=9.8 m/s2 Now Come To Your Question According to you question body is dropped from height of 10m so we can consider its initial velicity as zero h=10m u=0 g=acceleration due to gravity on earth which is equal to 9.8 m/s2 Now PUT the values of { height, initial velocity and acceleration due to gravity in third equation of motion } i.e v2- u2 = 2gExplanation:

4.

The ceiling of a long hall is 25 m high. What is the maximum horizontal distance that a ball thrown with a speed of 40 ms can go without hitting the ceiling of the hall. {Don't use calculator for calculating angle. I need steps so the answer is 150.5m}​ Class 11

Answer»

he ceiling of HALL is 25 m high therefore the max. height attained by the ball will be 25m.i.e. H = 25m, u = 40 m/s [given]we KNOW, H = u2sin2θ / 2gor, sin2θ = 2gH / u2 = 2 X 9.8 x 25 / ( 40 )2 = 0.30625or, sin θ = 0.5534or, θ = 33.6 oTherefore, R = u2sinθ / g = (40)2 sin 67.2o /9.8 = 150.5 mHope it helps..!!

5.

What meant by free fall​

Answer»

D MOVEMENT UNDER THE FORCE OF GRAVITY ONLY

6.

under what condition permanent Electromagnet is obtained if a current carrying solenoid is used support your answer with the help of a labelled circuit diagram​

Answer» ANSWER: The conditions to obtain permanent electromagnet as FOLLOWING if a current carrying SOLENOID is used are (i) The current through the solenoid should be direct current. (ii) The ROD inside is MADE of a magnetic material such as steel.
7.

The density of gold is 19.3 g/cm3. express it in si units

Answer»

tion:19.3g/cm^3=(19.3/1000kg) /(1/1000000)m^3)=(0.0193/0.000001)kg/m^3=19300kg/m^3

8.

Which of the following materials fall in the category of a 'pure substance'? Give reasons (a) Ice (b) Milk (c) Iron (d) Hydrochloric acid (e) Calcium oxide (f) Mercury (g) Brick (h) Wood (i) Air.

Answer» AIR,wood,MERCURY,hydrochloric acid,MILK
9.

What do you observe when a metal react with an acid​

Answer»

tion:When acids REACT with metals, they produce a salt and hydrogen gas. Most metals react with acids, but not all. The GENERAL EQUATION that describes the CHEMICAL reaction between an ACID and metal is metal + acid = salt + hydrogen gas.HoPE IT HELPS❤❤❤

10.

Pls solve this..............​

Answer»

is HELPS U........☺☺

11.

14. Figure shows refraction and emergence of a ray of light incident on a rectangular glass slab. Copy the diagram and mark the lateraldisplacement of the incident ray. Name the two factors on which thelateral displacement depends.​

Answer»

this also very EASY Explanation:you can SEARCH this ANSWER in google

12.

Complete the following word equation: Metal + Acid _ + _ gas​

Answer» SALT and HYDROGEN GAS will PRODUCE
13.

A stone is thrown upwards with kinetic energy k.the kinetic energy at the highest point is?

Answer»

when stone is THROWN UPWARD with KINETIC energy and when the stone reaches at the highest point the kinetic energy is 0 becuase the velocity at the highest HEIGHT is 0.

14.

By the stephen hawking what is theory of everything ??​

Answer»

your ANSWER is in the PICTURE PLEASE MARK it the BRAINLIEST answer

15.

What is average accelaration and uses of relative velocity?​

Answer»

Average Velocity. The average velocity of an object is its total displacement divided by the total time TAKEN. In other words, it is the rate at which an object changes its position from one place to another. Average velocity is a Vector quantity.Average Acceleration Formula. Acceleration is the rate of change for velocity, that is, change in velocity over a SPECIFIED period of time. Average acceleration is the final velocity minus the initial velocity PER time taken.Explanation:

16.

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is(a) 30 ms 2 downwards(c) 4 ms 2 downwards(b) 4 ms 2 upwards(d) 14 ms 2 upwards​

Answer»

4ms^2 UPWARD EXPLANATION:CHECK the ATTACHMENT

17.

Pls note everyone of class 10 those who have ncert course that on science textbook pg208 in example 12.5 rho=R *pie*r square and no Dsquare it is mistake​

Answer» TION:OK THANKS for your CONVENIENCE
18.

You may have heard the story of the race between the rabbit and tortoise. They started from same point simultaneously with constant speeds. During the journey, rabbit took rest somewhere along the way for a while. But the tortoise moved steadily with lesser speed and reached the finishing point before rabbit. Rabbit awoke and ran, but rabbit realized that the tortoise had won the race. Draw distance vs time graph for this story.

Answer» TION:i have HEARD the STORY of RABBIT and TORTOISE
19.

A person travels along a straight road for the first time with a speed v, and for next time witha speed yy. Then the mean speed v is given by​

Answer»

the SPEED of B is GIVEN by the YY speed

20.

Why bar pendulum is called compound pendulum

Answer»

Bar pendulum is CALLED compound pendulum because a compound pendulum has extended mass, just LIKE as a SWINGING bar.

21.

9 into 10 raise to 9 into 1.6 into 10 raise to minus 19 into 1.6 into 10 raise to minus 19 the whole divided by 5 into 10 raise to minus 11 the whole square​

Answer» TION:[{(9×10)9×(1.6×10)-19×(1.6×10)-19}]÷(5×10)-11
22.

Whena wave travels from one medium to another which characteristic of the wave will not change? a)wave lengthb) velocityc) frequencyd) wave no​

Answer» 5 SERIES WAVELENGTH THANK you
23.

Please somebody answer my questions.. i posted almost 4 questions from chapter system of particles and rotational motion but got no answers.please help me

Answer» OK BUDDY I will ANSWER them...don't WORRY
24.

Solve this quest pllzzzz​

Answer»

the PROPER distance which is given scientific is 25cm is for VIEWING and reading and it does not HARM our eye

25.

2 lenses have their optic powers as -2D and +1.5D their combination will have focal length of a) -1mb)-2mc) +2md)+1m​

Answer»

vemebrainliestansandplzzzzfollowme

26.

Determine the change in wavelength of light when it travels from air to glass if the refractive index of glass is 1.5 and the frequency of light is 4 into 10 raise to 14 Hertz. ​

Answer»

⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ IAM SORRY i don't KNOW

27.

What do u mean by units​

Answer»

a UNIT of MEASUREMENT is a definite MAGNITUDE of QUANTITY

28.

What do you mean by free fall​

Answer» DEFINE Free FallIn Newtonian physics, free fall is defined as the motion of an object where gravity is the only FORCE acting upon it. By this DEFINITION then, a skydiver is NEVER in true free fall, EVEN before they deploy their parachute.HOPE IT HELPS YOU BUDDY....
29.

No of electrons filled in p orbital​

Answer»

Here is your ANSWER....p orbital has 6 maximum NUMBER of ELECTRONS.

30.

find average speed of an object if it moves with a speed of 40 km/hour to travel some distance and return on the same path with the speed of 60 km/hour.​

Answer»

2V1V2/V1+V22×60×40/60+40=48

31.

How we can remove a proportional sign in is equals to​

Answer»

To remove the PROPORTIONAL sign NAME it as small K

32.

A pulley arrangement in a figure are identical the mass of the Rope is negligible in figure a the mass M is lifted up by attaching a mass 2m to the other end of the rope in figure B M is lifted up by pulling the other end of the rope with a constant downward force f is equal to 2 MG in which case the acceleration of M is more

Answer»

Case-1 :ACCELERATION of MASS m is,

33.

Explain band theory of semi-conductors??PLZ EXPLAIN CLAEARLY AND FAST.

Answer»

Band Theory of Semiconductors. When atoms come together to form a compound, their atom orbital energies MIX to form MOLECULAR orbital energies. ... With the SMALL band gap in between these TWO bands, it TAKES a certain amount of energy to excite the electrons from the valence to conduction band.pls mark as brainliest ....

34.

Hii guys plsss explain the working of a solar cookerfollow and inbox plsss only relevant answers​

Answer» TION:this is the CORRECT answer.please FOLLOW and MARK as BRAINIEST
35.

Suggest 2 materials that can be used to produce bio gas. Mention two used to biogas and 2 advantage of bio gas plant.​

Answer»

G AND WATER...A BIOGAS PLANT converts Biomass into biogas. ADVANTAGES arebiogas energy is ECO friendly manure is produce which is used to add nutrients to the soil

36.

3) L, Chlorine is passed into dilute, cold KOHsolution. What are the oxidation numbers ofchlorine in the products formed?1)-1, +52) -1, +33) +1, +74) +1, -1​

Answer»

e is passed into DILUTE, COLD KOHsolution. What are the oxidation numbers ofchlorine in the products formed?1)-1, +52) -1, +33) +1, +74) +1, -1

37.

Which of the following effect cannot be produced by an unbalanced force acting on a body? a)change in speed b)change in shapec)change in direction of motiond)change in state of rest​

Answer» C ) CHANGE in DIRECTION of MOTION
38.

When we press the bulb of a dropper with its nozzle kept in water air in the dropper is seen to escape in the form of bubbles. once we release the pressure on the bulb water gets filled in the dropper.The rise of water in the dropper is due to. a)pressure of waterb)gravity of the earthc)shape of rubber bulbd)atmospheric pressure​

Answer» SPHERIC PRESSURE HOPE IT WILL HELP YOu
39.

. A body starts from rest from the origin with an acceleration of 6 m/salong the x-axis and 8 m/s² along the y-axis. Itsdistance from the origin after 4 seconds will be(a) 56 m(b) 64 m(c) 80 m(d) 128 m​

Answer» C is the MIGHT be a ANSWER..........
40.

What is the formula of kinetic energy ​

Answer» ENERGY = (mv²) / 2M= mass of the body in MOTION..v= VELOCITY of moving body
41.

Hey......✔✔Why doesn't light carry momentum?✖✖✖✖✖✖✖✖✖✖✖✖✖⚠​

Answer» TION: As P=MVbut LIGHT didn't have a mass, so if we take mass as 0 p will ultimately be 0
42.

Hi matrs☺️☺️ can someone tell me reflection and absorption of sound????in a proper defination but not from google and should be the answer according to 8th classhope u all will help me!!!!thank u ​

Answer» UND travels in a given medium, it strikes the SURFACE of ANOTHER medium and bounces back in some other direction, this phenomenon is called the reflection of sound..absorption refers to the process by which a material, structure, or object takes insound energy when sound WAVES are ENCOUNTERED, as opposed to reflecting the energy.
43.

Find the odd one out.Liquid pressure,Buoyant force,Buoyancy Thrust​

Answer»

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

44.

Fill in the blanks. The pressure at any point in liquid is due to the _________ of the liquid column above the point​

Answer»

intermolecular spaces between molecules...HOPE it helps U...mark as BRANLIEST and do not forget to FOLLOW...

45.

Explain the activity to show that air exerts pressure by step wise step​

Answer»

Hlo friend here's your answer, Take a PLASTIC bottle and add some boiling water in it. The steam coming out of the water will EXPEL most of the AIR inside the bottle.. After about 1 or 2 minutes, close the cap tightly on the bottle and pour some cold water on this bottle. The steam coming out of the water will expel. Hope this MAY help you friend. PLEASE MARK ME AS BRAINLIST..

46.

Draw a simple diagram showing a food chain ​

Answer» ANSWER is above its very SIMPLE
47.

Bonjour guys.....♀ Why are sound waves invisible?No Spamming.......⚠@abhinavnayan#followme✖✖✖✖✖✖✖✖✖✖✖✖✖​

Answer»

your answer... ☺️☺️☺️➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡Sound is simply the ordered vibration of matter (as OPPOSED to heat, which is the disordered vibration of matter). ... This is not because sound is INVISIBLE, but is because AIR is invisible. When you talk, you are sending sound WAVES into the air and the air itself is what is doing the vibrating.✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔✔I hope this answer is helpful to u...❤❤❤Keep Asking... ✌️✌️✌️✨✨✨If HELP u. Mark my answer as brainliest✨✨✨

48.

Tell me the meaning of gitos if you don't give answer so you are a loser​

Answer»

Gitos MEANS DESTINY, LUCK and powerful symbolism.

49.

Hi guys I can't do the problem.and can't divide the fbd plzz help IIT JEE​

Answer»

BExplanation:Firstly we have to find COMMON acceleration so CONSIDER them as a single block with mass m . This comes out to be 1 m/s^2. Then you have to find that what is the maximum acceleration the block A can have because it's moving because of only friction and this maximum acceleration is 3 m/s^2. Now by observation you easily UNDERSTOOD that these blocks are moving together. So common acceleration is 1 m/s^2 then draw the FREE body diagram you will finf the eq friction = m×a=2×1=2NTick as a brainlist answer

50.

if you hold a plastic comb in your hand and rub it in your hair it will get charged however if you do the same with a metal, it will do not get charged wire but if the metal, has a plastic handle and you hold it from the handle it will also get charged why​

Answer»

of MAGNETIC FORCE.......