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.

9. 100 ग्राम भार की एक क्रिकेट बॉल 20 मी/से कीचाल से गतिशील होकर एक बल्ले से टकराती है औरउससे 0.1 सेकण्ड के लिये स्पर्श में रहती है। बॉल द्वाराबल्ले पर लगाया गया औसत बल है-​

Answer»

1/3 GATI SHEL SE BADH JAEGI
Discussion
2.

Calculate the apparent power in KVA of 3phase 415V, 50 Hz, star system, if the line current (IL) is 16A at 0.8 power factor​

Answer»

EXPLANATION:

a reaction in which a compound BREAKS down into TWO or more simpler substances. The GENERAL form of a decomposition

mark me BRAINLY answers

Discussion
3.

What is the angular displacement of minute hand in 20 minute?(Ans. 21/3 rad/s)Calculate the angular speed and linear speed of tip of second handof a clock, if seconds hand is 4 cm long. ​

Answer»

Explanation:

angular speed =1.746 X 10-3 RAD/s

angular DISPLACEMENT of 20 MINUTES =2.095 rad, LINEAR speed = 8.73 x 10-5 m/s.
Discussion
4.

If angle between a and ū isthen angle. Between 2a and335 is(A)wla(B)2x3(C)6(D)SR3​

Answer»

Answer:

C.6

Explanation:

HOPE you UNDERSTAND my answers

please Mark it as BRAINLIEST
Discussion
5.

7. A ray of light is travelling in a direction perpendicular to theboundary of a parallel glass slab. The ray of light:a) Is refracted towards the normalb) Is refracted away from the normalc) Is reflected along the same pathd) Does not get deviated8. A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:a) 120ob) 90oc) 45od) 0o9. A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is:a) 8 cmb) 16 cmc) 24 cmd) 36 cm10.If an object is placed 21 cm from a converging lens, the image formed is slightly smaller than the object. If the object is placed at a distance of 19 cm from the lens, the image formed is slightly larger than the object. The approximate focal length of the lens is:a) 20 cmb) 18 cmc) 10 cmd) 5 cm​

Answer»

Answer:

ay of LIGHT is TRAVELLING in a direction perpendicular to the BOUNDARY of a PARALLEL GLASS slab

Explanation:
Discussion
6.

What will happen if the material of a pendulum of a clock is made up of aluminium instead of invar​

Answer»

Answer:

The pendulum clock is made up of invar because invar's COEFFICIENT of THERMAL expansion is small. So, the LENGTH of the pendulum remains UNAFFECTED during changes in TEMPERATURE.
Discussion
7.

Subtraction of vectors obeys(A) Commutative law(B) Associative law(C) Distributive law(D) All the above​

Answer»

ANSWER:

DISTRIBUTIVE LAW

PLEASE FOLLOW me
Discussion
8.

12. An object is kept at a distance of 20 cm in front ofa convex mirror of focal length 10 cm. Where is theimage formed and what is its nature?​

Answer»

Answer:

Using the FORMULA 1/f = 1/v + 1/u

You will get that the image is FORMED 6.7 CM BEHIND the mirror and it is VIRTUAL
Discussion
9.

PRACTICE ASSIGNMENT 3(Based on Chapter 3— Force and Pressure)1. Fill in the blank spaces by choosing the correct words from the list given below:momentupward atmosphere areList: waterdensity altitudes lateral turningeffects.)area.....cross-section.at sea level.of a liquid(a) The changing perpendicular distance results in different(b) Pressure is inversely proportional to the(c) The air pressure can support 10.34 m of(d) The buoyant force decrease with the decrease in(e) The thick wall near the base of a dam counters large(f) The atmospheric pressure decreases on higherpressure of wate146​

Answer»

ANSWER:

ysoywyododuosyiskywyosyisihsoydkbshzihs8yxye6hzjzgiz8hxyxygkxx9nihxhixt8xihdhoshosys9ysyidonshahosyxusyogsbhpzohayosuosuoeyposoywyododuosyiskywyosyisihsoydkbshzihs8yxye6hzjzgiz8hxyxygkxx9nihxhixt8xihdhoshosys9ysyidonshahosyxusyogsbhpzohayosuosuoeypousy0stsy0soyosyztiyzihxnxjzibzbznlsnosnixnldipdojxno0dd9y8z,9tztizto,t9s6oxydzysplyspysoysypatstshsudulotzis9ysysyodpudy9st9yspoydy0sy9spho
Discussion
10.

Formulas?Aro(Ans. CHCA compound made up of two elements A and B has A = 70%BTheir relative number of moles in the compound is 125 and 1calculate(1) Atomic masses of the elements A and B(ii) Molecular formula of the compound, if its molecular mass is found tobe 160.[Ans.() 56 and 16. (A B1200 is carried out by taking 24.0 of carbonO.​

Answer»

EXPLANATION:

bbbbhhhhdbdhegrhegherhrbrbtbtbbbbvbvvvbbvvvbbbbhhhbn
Discussion
11.

Set the following vectors in theincreasing order of their magnitudea) 31^+4j^b)2i^+4j^+6k c) 2i^+2j^+2k^(A) a, b, c(B) c, a, b(C) a, c, b(D) b, c, a​

Answer»

ANSWER:

(D)b,C,a is the answer

Explanation:

please SEND me thanks and like me ❤️ plz ❤️
Discussion
12.

. The table given below shows distance (in cm) travelled by bodies A, B and C. Read thedata carefully and answer the following questions,Distance (in cm) covered by different bodiesTime in (s)Body (A)Body (B)Body (C)Ist Second2020202nd Second2036603rd Second20241004th Second20305th Second1402048Toa​

Answer»

ANSWER:

WRITE your QUESTIONS CORRECTLY and than SHARE your questions
Discussion
13.

A car travels on a flat circular track of 200m at 30m/s and centripetal acceleration is 4.5m/s^2 if the car has a mass of 1000 kg find the frictional force requiredIf it’s coefficient of static friction is 0.8 what is the maximum speed at which the car can circle the track

Answer»

Given :

  • A car travels on a flat circular track of 200m at 30m/s

  • centripetal acceleration = 4.5m/s^2

  • mass of car = 1000kg

To find :

  • the frictional force required

  • If its coefficient of STATIC friction is 0.8 what is the maximum speed at which the car can circle the track

Formula used:

  • Force (F) = mass × Acceleration

  • Maximum speed (v) = √(μrg)

where :-

  • μ = coefficient of static friction
  • R = radius
  • G = 10 m/s²

Solution :

⟹mass = 1000kg

⟹Acceleration = 4.5m/s²

⟹Friction Force (F) = mass × Acceleration

⟹F = 1000 × 4.5

⟹F = 4500 N

Now we will find maximum speed at which the car can circle the track :-

⟹ v = √(μrg)

Now PUT :-

  • μ = 0.8
  • r = 200
  • g = 10

⟹v = \sqrt{0.8 \times 200 \times 10}

⟹v = \sqrt{ \dfrac{8}{10} \times 200 \times 10}

⟹v = \sqrt{ {8} \times 200 }

⟹v = \sqrt{ 1600 }

⟹v = \sqrt{ 40 \times 40 }

⟹v = 40 \frac{m}{s}

Answer :

  • frictional force = 4500N
  • maximum speed = 40 m/s

____________________

Learn more :-

  • v = wr

  • ar = r w²

  • F = mv²/r

  • Maximum speed (v) = √(μrg)

___________________
Discussion
14.

To convert an AC generator into a DC generator what will we have to do?1. Change the polarity of magnet2. Need three set armature coil3. Place slip rings instead of split rings4. Place split rings instead of slip rings.

Answer»

Answer:

To convert an AC generator into DC generator

split-ring TYPE commutator must be used.

slip rings and BRUSHES must be used.

a stronger magnetic FIELD has to be used.

a RECTANGULAR wire loop has to be used.
Discussion
15.

Pencil from one side of the glass and also from the top of the glass.How does it look?Do you find any difference between the two views?Activity 2Go to a long wall (of length about 30 feet) facing the Sun. Go to onend of a wall and ask your friend to bring a bright metal object near thether end of the wall. When the object is a few inches from the wall itppears distorted and you will see a reflected image in the wall as thoughhe wall were a mirror.Why is there an image of the object on the wall?To answer the above questions and to give reasons for the situationentioned we need to understand the phenomenon of refraction of light​

Answer»

ANSWER:

I don't no so L can't answer you

MAKE me BRILLIANT
Discussion
16.

3. A person walks 4 meters east in 1 second thenWalk 3 meters north in 1 second. Determine -average speed and average Velocity​

Answer»

ANSWER:displacement=h²=b²+p²

h²=4²+3²

h²=16+9

h=root 25

h=5

average velocity=displacement /time

v=5÷2

v=2.5m/s²

average velocity=2.5m/s²

average speed=total DISTANCE/ time

average speed=7÷2=3.5m/s²

average speed=3.5m/s²

Explanation:plz mark as BRAINLIEST answer FOLLOW me
Discussion
17.

A force F is applied on a square area of side L. Ifthe percentage error in the measurement of L is2% and that in Fis 4%, what is the maximumpercentage error in pressure?(2) 4%(1) 2%(3) 6%(4) 8%​

Answer»

<P>Percentage ERROR in L=2%

Percentage error in F=4%

We know that, P=

A

F

​

=

L

2

F

​

P

△P

​

×100=

F

△F

​

×100+2

L

△L

​

×100

=[4+2(2)]% = 8%.
Discussion
18.

Q9. A spherical mirror and thin spherical lens have each of focal length -15cm. The mirror and lens are likely to be : *1 pointBoth concaveBoth convexMirror is concave and lens is convexMirror is convex and lens is concave guys answer fast please....my test is going on....​

Answer»

Answer:

both CONCAVE because it is GIVEN in minus

EXPLANATION:

HOPE it helps you
Discussion
19.

In a hydraulic machine, a weight of 40 N is placed on the smaller piston whose area is 8 cm2.i. How much pressure will it exert on the larger piston whose area is 5 m2?ii. How much weight can be lifted by the larger piston?iii. What is the mechanical advantage of the machine?

Answer»

ANSWER:

FIRST you MARK me BRAINLIEST then GET answer

Discussion
20.

If electron, Hydrogen, Lithium and sodium nuclei are moving with the velocity of light, then the wavelengths associated with theseparticles are in the order?(A) Electron > Hydrogen > Lithium > Sodium(B) Electron > Sodium > Hydrogen > Lithium(C) Sodium > Lithium > Hydrogen > Electron(D) Electron > Lithium > Sodium > Hydrogen​

Answer»

Answer:

Explanation:

ACCORDING TO DEBROGLIE EQUATION

wavelength = H/mv

here v= VELOCITY of LIGHT

h = 6.63×10^-34

thus wavelength ∝ 1/mass

when mass increases wavelength decreases SINCE there are inversely proportion

according to increase in mass order is

electron < hydrogen < lithium < sodium

according to wavelength order

∴electron > hydrogen > lithium > sodium

thus answer is option A
Discussion
21.

Three capacitors of 4uF each are to beconnected in such a way that the netcapacitance is 6uF. Then​

Answer»

ANSWER:

TWO in SERIES and ONE is parallel

Explanation:
Discussion
22.

- Silica has an estimated fictive temperature14ookgwith an Tsothermal compressibilityall 7 x 10" m2 N"' [RY 197. The practiegindex and the photo elastic coefficient forSilica 1.46 and 0.206 respectively.Determine the theoretical attenuation indecibelsper kilometer due to thefundamental Rayleigh scattering insílica at optical wavelengths of 0.63,1:00, and 1.304m. Boltzmann's constantis 1.381x 10 21 JK".​

Answer»

ANSWER:

hmmmmmmmmmmmmmmmmmmm.........mmmmmmmmm.............................................................
Discussion
23.

Find the correct relation. Thermal power station: chemical energy to electrical energy Nuclear power station: ________________ to electrical energy1. Hydro Energy2. Nuclear energy3. Mechanical energy4.Thermal energy

Answer»

EXPLANATION:

NUCLEAR ENERGY is the ANSWER..
Discussion
24.

Q 11/75 A uniform rope of mass m is tied to ablock of mass M and a constant force Fis exertedon the rope in the vertically upward direction asshown. The force that the rope exerts on theblock, if both move upwards with constantacceleration is:mM​

Answer»

I HOPE it HELPS in some WAY.
Discussion
25.

I) A bus takes 40 minutes to cover a distance of 18km.Calculate its speed in km/h and m/s?ii) A car moving at an average speed of 45km/h takes 300minutes to reach its destination.Find the distance covered by the car.

Answer»

Answer:

16 km in 40 minutes = 2/3 hours means 24 km (16*3/2) in ONE HOUR. Hence SPEED is 24 km/hr

24 kmph = 24000 m/3600 a = 20/3 metres per second

Please vote me
Discussion
26.

The resultant of two forces 2 N and 3 N isV19 N then the angle between the forces(A) 300(B) 45°(C) 60°(D) 40°​

Answer»

ANSWER:

EXPLANATION: A=2N

B=3N and C= 4N. R²= A²+ B²+2ABcos∅ 4²= 2²+3²+2×2×3 cos∅ 16= 4+9+12 cos∅ 16= 13+12 cos∅
Discussion
27.

Duration:Is P = i+j+k, 7 = 2i - j - kthenP - Q is(A) -1 +23 + 2(B) i - 23 - 2(C) i +2j+2(D) None​

Answer»

ANSWER:

C please follow me L ALSO follow you

Discussion
28.

11,125 g ভরের এবং অনুভূমিক দিকে 30 m/s বেগে গতিশীল ক্রিকেট বলব্যাটের আঘাতের ফলে বিপরীত দিকে 20 m/s বেগ পেল| সংঘর্ষকালS20হলে ব্যাট দ্বারা প্রযুক্ত বল কত?[125 N ]​

Answer»

ANSWER:

I can't UNDERSTAND this DISCO LANGUAGE...
Discussion
29.

Hi friends very good eveningtell about atomic structure take free points but need correct answer wrong answer will be reported ​

Answer»

ANSWER:

atomic structure mean how atom should look like mean OXYGEN 1 st ORBIT is COMPLETED and 2nd have FOUR blvalency it is half

Discussion
30.

The displacement x(t) of a particle from its equilibrium position is described by the equation x = Acos(@t+Q), where A, w and o are constants. Find the velocity and acceleration of the particle at timet​

Answer»

ANSWER:

solution is ATTACHED as Photo. looks LIKE a Simoke Harmonic Motion.
Discussion
31.

The material which is not decomposed by natural processis called Non biodegradable true or false​

Answer»

Answer:

\huge{\underline{\mathtt{\red{❥A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}A material which is not EASILY decomposed by natural processes is termed as non-biodegradable material. Examples are POLYETHENE, PVC, PS. It takes many YEARS for decomposition. HENCE, option B is correct.
Discussion
32.

Forces X N and V2 X N act at 135° with one another to then their resultant is(A) XN(B) Root 2 XN(C) 2/2 XN(D) 2 XN​

Answer»

ANSWER:

XN

Explanation:
Discussion
33.

A body throws upward making a certain angle with horizontal andmoving under the action of gravity is called?​

Answer»

ANSWER:

ACCELERATION DUE to GRAVITY

Discussion
34.

Q. A stone is released from a height from the top of the tower of height 19.6 meters calculate its final velocity❌NO NEED TO SPAM HERE ❌❌SPAM= POINTS DELETION ❌TODAY I MAKE A NEW FRIEND @BOBO31 AND GAVE HER A NICKNAME BUBU ISN'T IT GOOD ❤️​

Answer»

Answer:

Initial VELOCITY u=0

Fianl velocity v=?

HEIGHT, s=19.6m

By third EQUATION of motion

v2=u2+2gs

v2=0+2×9.8×19.6

v2=384.16

⇒v=19.6m/s

Hope it will help....Nice NAME bubu hope your friendship will be stronger and stronger....
Discussion
35.

1. Every food chain in the Ecosystem begins with which are the original source of food ?A. Saprophytes b. Parasites C. producers D. herbivores ​

Answer»

Answer:

C. Producers i.e. FOOD CHAIN starts with plants and its PRODUCTS
Discussion
36.

The unit vector parallel to the resultant of the vectors A = 4î + 3î + 6k andB = - î + 3î – is(A) 3 (3î + 6Î – 2)(B) } (3î + 6î +2)(C) 1(3î +6î – 2(D) (4 - 6î + 2)​

Answer»

Answer:

(D)

EXPLANATION:

Please make me as BRAIN LEAST

Discussion
37.

A particle is moving with a uniform speed v in aCircular path of radius with centre at O.When theparticle moves from a point A to B on the circle suchthat AOB = 90°, then the magnitude of the change in velocity is​

Answer»

ANSWER:

C will be the answer by REHAN
Discussion
38.

During the practical in the lab when hydrogen sulphide gas having offensive odour is prepared for some test, we can smell the gas even 50 metres away. Explain the phenomenon.​

Answer»

Answer:

We can SMELL the Hydrogen sulphine because of the DIFFUSION.......

Diffusion = the SPREADING of something more WIDELY.
Discussion
39.

As a result of interference of two coherent sources of light energy isa] redistributed and distribution doesnot vary with time b]decreased c] increased d] redistributed and distribution changes with time

Answer»

Explanation:

I I THINK REDISTRIBUTED and DISTRIBUTION does not vary with time
Discussion
40.

Draw v-t graphno thanks

Answer»

ANSWER:

V t GRAPH GIVES ACCELERATION
Discussion
41.

Mr. Abdulla wishes to move a heavy block of mass10 kg by means of an engine through a string suchthat reading of the spring balance is 5 kg.The acceleration of the block will be :37°smooth10 kg​

Answer»

ANSWER:

...............................MMM
Discussion
42.

Please give the answer of all the numbers.If you know any one answer than please give that one only.​

Answer»

Answer:

EXPLANATION:

The power of an air CONDITIONER is GREATER than a fan because air conditioner consume more ENERGY than a fan.The air conditioners.The air conditioner consume lot of electricity energy and therefore the electricity bills are very EXPENSIVE.
Discussion
43.

Out of the following set of forces, the resultant of which cannot be zero?10, 10, 1010, 10, 2020, 20, 1010, 20, 35

Answer»

ANSWER:

here is U R ANSWERS...................
Discussion
44.

1. The limit of Balmer series is 36468. The wavelength of first series of this elements will be(A) 65638(B) 36468(C) 72008(D) 10008​

Answer»

ANSWER:

for balmer series,n1=2 ,n2=3,4,.......

WAVELENGTH of balmer series are

1/wavelength =R[1/2^2-1/n^2]

for series LIMIT n2=infinity and WAVE length

for first line n2=3

1/wavelength =R[1/2^2-1/3^2]

1/wavelength = 4/36468×5/36

wavelength = 1312848/20

wavelength of first series of this element is 65638

so ANS is 65638
Discussion
45.

Draw ray diagrams for convex lens, object placed at different positions.( At infinity, beyond the centre of curvature, at centre of curvature, at focus point and between focus point and optic centre )​no irrevalent answers are accepted

Answer»

ANSWER:

When the OBJECT is placed between centre of curvature and principal FOCUS of concave mirror, a real image is formed BEYOND the centre of curvature (C).
Discussion
46.

5) a object is at a distance of 10 cm froma mirror then the distance betweenmirror andimage​

Answer»

10 CM as this if I'm PLANE MIRROR
Discussion
47.

Which of the following is a scalar quantity ?(1) current(2) velocity(3) force(4) acceleration​

Answer»

(1) current is scalar quality

PLEASE MARK me as brainlest and FOLLOW me please
Discussion
48.

When a body is projected into air with certain initial velocity making an angle with the horizontal, it will travel in a parabolic path.a) What are the vertical and horizontal components of velocity? [1]b) with a diagram derive an expression for:i. Maximum height ii. Time of flight [4]c) A ball is dropped through the window of a train travelling with high velocity, to a man standing near the track. The ball…………i. Falls down verticallyii. Moves straight horizontallyiii. Follows an elliptical pathiv. Follows a parabolic path

Answer»

ANSWER:

we don't KNOW this answer
Discussion
49.

4. Along which a force acts is calleda. line of action of forceC. axis of rotationb. line of acting torqued. moment arm​

Answer»

ANSWER:

I think your answer is AXIS of rotation..

I am not sure....

plz FOLLOW me and MARK me as BRAINLIEST.....
Discussion
50.

10. A body is in limiting equilibrium on a rough planeinclined at 30 with the horizontal. When theinclination is increased to 45', the body slides downwith acceleration. Find this acceleration.Take 8 - 9.8 msAns. 2.93 mthe fa​

Answer»

EXPLANATION:

Now

mgsin(15+30)=ma

gsin45

∘

=a

a=gsin45

∘

a=G×

2

1

a=

2

g

m/s

2
Discussion