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.

5. A wheel is rotating at 1800 rpm about its own axis. When the power is switched off, it comes to rest in 2 minutes. What is the angular retardation in rad/s2?

Answer» NEY are how much R HONEY bee are to be have the same best right to side BACK and to in
2.

Get a piece of nichrome wire from an electric repair shop.this wire is used in electric iron.keeping the switch in the off position touch the wire to see how warm it is .now press the switch to the on position .touch the wire very lightly after a few second .what do you find? has the wire become hot?

Answer»

n't THINK so

3.

Oxides of carbon for class 8 ICSE explain chemistry????????

Answer»

e here's ur ans hope it helps you carbon forms TWO well known oxides, carbon monoxide, co, and carbon DIOXIDE, CO2. in addition it also forms carbon suboxide,C3o 2. carbon monoxide is PRODUCED when graphite (one of the naturally occurring forms of elemental carbon) is HEATED or BURNT in a limited amount of oxygen.

4.

Theory of simple voltaic cell .

Answer»

is the PROCESS of CONVERT the CONTINUE SIGNAL into DESCRIBE signal

5.

a convex lens of focal length 25 cm and concave focal length 12 CM are placed in closed connected with each other calculate the lens power of the combination

Answer»

e power with the HELP of focal length individually. you will get you will get TWO power. now with the FORMULA of COMBINED power ADD both the power and this is your answer

6.

What is the center of gravity? I; A; V;

Answer»

eneral shaped object, there is a simple MECHANICAL way to DETERMINE the center of GRAVITY: If we just balance the object using a string or an EDGE, the point at which the object is balanced is the center of gravity. ... The center of gravity is the point where the LINES intersect.

7.

A 3 3, 400v, 50hz full converter, fed from deltastar transformer is connected to load r-l requiring ripple free load current of 15a. For a firing angle delay of around 45, what is the rectification efficiency? _________(%)

Answer» W r are honey are bee to TEAM SEE say that team be a the republished the of a NEW his state and GOVERNMENT of India Andhra state government and of the are the a you tube world w what is how that
8.

a uniform solid cube is floating in a liquid with part x inside the liquid.If height of the cube is increased keeping base area and density same ,x will increase,decrease or remain same ?

Answer»

it will REMAIN same

9.

How all bases are different from alkali? Do all bases are alkali ?

Answer»

re substances that react with ACIDS and neutralise them. They are USUALLY metal oxides, metal hydroxides, metal carbonates or metal hydrogen carbonates. Many BASES are insoluble - they do not dissolve in water. If a BASE does dissolve in water, we call it an ALKALI.

10.

Students are going in a coastal region test the drinking water as well as the sea water with the circuit a part of conducting wire a wood around a match box containing compass he finds that the compass needle deflected in case of the welfare can you explain the reason

Answer»

er CONTAINS more dissolved salts than the DRINKING water. Hence, it is more conducting than the drinking water. Because of this reason, the COMPASS needle deflects more in SEAWATER than in the drinking water.

11.

Average mass of raindrop is 3 into 10 to the power minus 5 kg and the average time a velocity is 92%

Answer» ENERGY - k= \frac{1}{2}mv^{2} - WHEREIN m\rightarrow mass v\rightarrow velocity   Kinetic Energy is always positive.   Total volume of WATER in 1 m^2  area = 1 m^2 \TIMES 100 cm = 1 m^3 Total mass in 1 m^2 area = \RHO v = 10 ^3 \times 1 Kg = 10 ^3 Kg Kinetic energy = 1/2 \times 10 ^3 \times 9 ^2 = 4.05 \times 10 ^ 4 J
12.

Keeping the switch in the off postion touch the bulb to see how warm it is.now press the switch to the on position .touch the bulb aftrr a few second .what do you find? has the bulb become warmer

Answer»

e SWITCH is off no change in the TEMPERATURE of bulb is experiencedbut when the switch is in on position the heating effect is experienced by US on touching the bulb the bulb becomes warmerbecause when electric current flows through a conductor it produces heat asheat is directly PROPORTIONAL to square of amount of the electric currentheat is directly proportional to time takenheat is directly proportional to resistance of the conductor

13.

why should the VI graph of ohmic resistor pass through origin but this is not the case with non ohmic resistor??

Answer»

n : (i) The V-I GRAPH for an ohmic meterial is straight line paring through the ORIGIN. Eg: resistor made of margarine (II) V-I graph for NON- ohmic material is a curve , (ie) non - linear or straight line not passing through origin eg: junction diode or electrolyte (i) graph for ohmic material (ii) graph for non -ohmic material

14.

Mention and explain 4 application of echo

Answer»

en a sound wave is produced in air, some of it is absorbed after hitting with a reflector while some of the sound wave is reflected back to the LISTENER. This reflected sound is called echo.Applications of Echo:1. Since bats cannot see from their eyes, so they use the technique of ECHOLOCATION to locate their ways. Bats can UNDERSTAND from the reflected sound if there is any object before it. It hunts its prey by using this technique.2. This technique is also used to find the depth of sea or distance of submarines.3. It also helps to estimate the distance or hills and mountains.4. This technique is also very helpful in the medical field as well. Doctors used this phenomenon in cardiography, SONOGRAM and many other medical DIAGNOSIS.

15.

What are the applications of a kaldeoscope

Answer»

rian uses include INCORPORATING kaleidoscope VIEWS and patterns into tapestries, rugs, CARPETS, wallpaper, fabric and more. The early use of KALEIDOSCOPES was for entertainment and the sheer enjoyment of the beautiful images.

16.

Q.1. Express the views on the system of education which existed in Einstein's time.

Answer»

Einstein took his education in Germany .The characteristics of the education system was :⇒ There was no scope for CONCEPTUAL learning.⇒ The subjects in the textbook was asked to mug up.⇒ Teachers did not allow students to ask questions.⇒ Teachers never encouraged creativity.⇒ Teachers discouraged conceptual learning.My views on such a system of education :⇒ Such an education system will lead to great disinterest in studies for the children . If there is no interest , then automatically the student will not learn the exact things . This will be misleading and harmful for their future.⇒ In the official works as an adult as well as in real life, we need to have concept and understanding in order to perform DUTIES as an individual being. In this education system we may not be independent in our views because others are advising us and forcing us to believe things particularly because we do not have enough conceptual thoughts.⇒ Education is the most powerful weapon that can change the World. Change is something which occurs if and only if something new is created.  Here something has to be "created" and HENCE students need enough creativity to change the World. In this education system students will lose their creativity and hence the progress will be slow.⇒ But Albert Einstein already stated " Education is something which you remember even after forgetting your school lessons". Truly said , education refers to moral values and wisdom with knowledge which will help you in life to spread happiness , devotion and respect for others . Education does not at all mean that you will mug up your lessons and give the exams.⇒ Education of this sort CREATES an atmosphere where students does not learn much but forgets the things which he has learnt before. It creates more problems than it sorts.⇒ Students could not even question their teachers and hence this clearly depicts that students did not enjoy their basic Freedoms.⇒ Teachers and students should have a friendly relation and each should respect one ANOTHER and only then would the education cycle will move on and create an era of successful citizens who will lead the World to development !!

17.

What is the minimum number of Rays required pho locating an image formed by a concave mirror

Answer»

Minimum two rays are NEEDED to LOCATE the image formed by a convex mirror of an OBJECT.

18.

A uniform magnetic field of 0.0300 t points vertically upward

Answer» EEL MUCH of a you the
19.

How are temperature and hotness of a body related ? plz ans quickly it's urgent and plz follow me .

Answer»

e THINK that heat and temperature are the same thing. However, this is not the case. Heat and temperature are related to each other, but are different concepts. Heat is the total energy of molecular motion in a substance while temperature is a measure of the AVERAGE energy of molecular motion in a substance.

20.

What is zenner diode & what is it's principle ?

Answer»

zenner DIODE & what is its PRINCIPAL

21.

The gravitational force between two bodies is not depend on

Answer»

mass of the OBJECT is large, then the gravitational force will ALSO be large. BECAUSE., the gravitational force is directly proportional to the MASSES. DISTANCE between the two masses. ... BECAUSE,the gravitational force is inversely proportional to the distance between the two masses.

22.

Mention any 2 other situations where this phenomenon can be observed

Answer»

what you WANT to KNOW BUDDY

23.

Short information about solar light and solar heating system and solar cooker

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.

24.

A train travelling at 36 kmph crosses a platform in 20 seconds and a man standing on the platform in 10 seconds. What is the length of the platform in meters?

Answer» SPEED of train = 36 km/hr                         = 36 × 1000 m / ( 3600 s )                         = 1000 m / 100 s                         = 10 m/sTime TAKEN to cross the platform = 20 sFormula :Speed = DISTANCE / time= > distance = speed × time= > distance = 10 m/s × 20 s                     = 200 mANSWER:The length of platform was 200 m
25.

The momentum of a body is 20000 dyne_ sec . Itsbk.e is400erg . The mass of body is

Answer»

CM number CM JA GL ja SO OS SU is

26.

Two lenses of focal length 20cm and 40cm which lenses will be you obtain more diverging light

Answer»

the ANSWER would be the lens with 40cm of FOCAL length

27.

The electric field at 4cm from a long-straight wire is 40N/C, what is the electric field at 16cm from the wire (In SI units)?

Answer» C field at a distance R from a LONG straight WIRE is λ/2πϵR  It means for a long straight wire charge distribution E is inversely proportional to R. So
28.

What is a critical angle in refraction? Expain formation of Mirage with a diagram.

Answer»

nomenon occurs if the angle of incidence is greater than a certain LIMITING angle, called the CRITICAL angle. In general, total internal reflection takes place at the boundary between two TRANSPARENT media when a ray of light in a MEDIUM of HIGHER index of refractionapproaches the other medium at an angle of incidence greater than the critical angle. For a water-air surface the critical angle is 48.5°. Because indices of refraction depend on wavelength, the critical angle (and hence the angle of total internal reflection) will vary slightly with wavelength and, therefore, with colour. At all angles less than the critical angle, both refraction and reflection occur in varying proportions.

29.

The ratio of reflection and distortion is called

Answer» PE of DISTORTION is CALLED DELAY distortion .
30.

Suppose you are outside your home and an earthquake strikes what 2 precautions would you take to protect yourself

Answer»

ving as many PRECAUTIONS as possible :⇒ If you are in a vehicle , we should stop the vehicle and put our head down under cover.⇒ If you are inside a building immediately GET out of there.⇒ Search for a safe place which is like an OPEN ground and not crowded.⇒ If you are under a tree get away from the tree immediately.⇒ Stay away from big buildings and search for space.⇒ Taking shelter under a MASONRY object could be danger as well .Hope it HELPS -_^

31.

Detail on pollution ganga and yamuna river and effect of air pollution on taj mahal

Answer»

ebrated white marbles of Taj Mahal is fading to Yellow and green color due to pollution that caused by over population around the GANGA and Yamuna River banks.  Some of the ACTIVITIES like petrol fumes, illegal building works, water pollutants that floating on river Yamuna and  Ganga and industrial growth had brought the Mughal monument to the verge of extinction.Taj Mahal is slowly decaying due to air pollution. Dense smog which is created by human activities is slowly discoloring the marble and turning it to sickly yellowish-brown color.There are several factors to be BLAMED heavy traffic, wood-burning crematoriums, smoke from neighbouring factories, and Agra’s growing population, the last of which demands more and more water. Because of the fact that Yamuna River is drying up, it risks sliding the Taj Mahal off its picturesque banks into a SEA of MUD.

32.

What temperature do you need to heat gold to melt? Phase change.

Answer» C  is the ANSWER
33.

Refractive index of diamond is 2.45. Caculate the speed of the light

Answer»

ex of refraction is DEFINED as the ratio of the sped of light in a VACUUM to the speed of light in the meduiu of INTEREST, in the CASE diamond. So n = C/v= speed of light in diamond. 2.42, c= 3*80 m/sec so v=1.24*80 m/sec.

34.

Define matter. What is its composition

Answer» OS a SUBSTANCE which OCCUPIES space and has some MASS of its own.composition i don't KNOW.
35.

P×Q=PQ; then what is the angle P vector and Q vector.

Answer» Q sinФ P×Q = PQ Then SIN Ф = 1 which MEANS angle is 90°
36.

What is the angle of projection at which the maximum height horizontal range of a projectile are equal?

Answer» N (X)GIVEN R=H4R/R=tan (x)x=tan^-1 (4)✌
37.

Why cannot we see a book which . Is placed on a dark room

Answer»

the LIGHT can not REACH ADARK ROOM

38.

A stranded conductor of four strands,each of radius 'r' is given below.What is the percentage decrement in self distance of conductor if stranded conductor is converted into its equivalent solid or single strand 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

39.

If a rain drop is coming down from window screen then which friction is working on it

Answer»

end....the answer is SLIDING FRICTION....HOPE it helps...

40.

Give the variation of resistivity of a) metallic conductor b) an alloy with temperature

Answer»

your answer--The resistivity INCREASES means that the conductivity of the MATERIAL decreases. for metal conductor, it is SAID that temperature co-- efficient. the value is POSITIVE . for most of the metals, the resistivity increases linearly with increases in temparature for a range of 500k

41.

Does the water level changes when it is kept under sunlight for a complete day

Answer»

on the RATE of EVAPORATION and PRECIPITATION in a DAY.

42.

Engine oil are highly viscous why

Answer»

oil viscosity refers to how EASILY oil POURS at a specified temperature. Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have a higher viscosity. Thin oils reduce friction in ENGINES and help engines start quickly during cold weather. Thick oils are better at maintaining film strength and oil PRESSURE at high temperatures and LOADS.

43.

Regular reflection to occur the surface must be smoothand

Answer»

ake INCIDENT and REFLECTED RAYS parallel to each otherIT ALSO RESULTS IN IMAGE FORMATION €€€ BESIDES DIFFUSED REFLECTION LACK THESE CHARACTERISTICS DUE TO IRREGULAR SURFACE €€€

44.

If kinetic energy increases by 3% then momentum is increase by

Answer»

mn will INCREASE TO THE HALF OF THE KINETIC ENERGY i,e  1.5%

45.

Hey friends please describe or difference between mechanical wave and electromagnetic waves on the basis of 11 class don't copied answer from google please give me correct answer

Answer»

te The answer of ur question is here Electromagnetic WAVES  are different from other waves. They can enter in vacuum of outer space. It is PROPAGATED by simultaneous periodic variations of electric and MAGNETIC field. They are created by vibrations. They don't need MEDIUM to propogate Mechanical waves  is different from electromagnetic waves. These waves are not capable to pass its energy to vacuum. They create vibration on matter to transfer their energy to to any material . They need medium to propogate HOPE it helps

46.

Find the value of g at a height of 100km from the surface of the earth (radius of the earth =6400 km,on the surface of the earth =9.8ms-2

Answer» ARIES as g'=g/(1+H/r)^2BUT if ,h <
47.

If suddenly the gravitational force of attraction between the earth and satellite revolving around it becomes zero, then the satellite will a)continue to move in it's orbit with same velocity b)move tangentially to the original orbit with same velocity c)become stationary in it's orbit d)move towards earth

Answer»

force of attraction is COMPLETELY gone then the SATELLITE might just WANDER straight into SPACE away from EARTH.

48.

Explain the Newton's second law of motion with sports example

Answer»

s laws of MOTION form the basis for principles used in sport movements. METHODS of training that depart from these laws would not make sense mechanically. Tips for efficient sport performances are built around these laws and principles.   First, it helps to know that there are two basic types of motion. These come into PLAY in combination when applying mechanical principles to sport skills: 1. Linear motion occurs when an object or person travels in a straight line, as when sledding across a level SURFACE. 2. Angular motion occurs when an object or person turns about a center point, axis, or fulcrum and does not travel from place to place. It is common in diving and gymnastic skills when athletes rotate, twist, or spin.

49.

A sphere s1 of radius r1 encloses a net charge q. If there is another concentric sphere s of radius r2

Answer» ESTION is INCOMPLETE
50.

If the dustance between two equal point charges is doubled ,then what would happen to yhe force between them

Answer»

q2/r^2if DISTANCE is DOUBLED then