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 pair of scissors has its blades 15 cm long it's handles are 7.5 cm long what is the mechanical advantage

Answer» MECHANICAL ADVANTAGE is EQUAL to LOAD by effort.
15 by 7.5
It is equal to 2
2.

Q-20 Calculate the total torque acting on the body shown in given figure about the point O.Rotational mechanics (HCV)

Answer»

Given in the question :-

We have to take Anticlockwise TORQUE = + ve

clockwise torque = - ve


Now,

Torque = TOTAL force × perpendicular DISTANCE to the force

(clockwise and anticlockwise )



Total torque 20 * 0.04 * sin30^0 + 5*0 + 15 * 0.06 * sin37^0 - 10* 0.04* sin90^0=


= 20× 0.02 + 15 × 0.036-0.40

= 0.40+ 0.54- 0.40 N-m

= 0.54 N-m (Anticlockwise direction )


Hence RESULTANT torque acting on the point is 0.54 N-m (Anticlockwise)



HOPE it Helps :-)

3.

Question number 27 plz

Answer»

Here is your ANSWER....

4.

Why is parllel arrangement used in domestic wiring?

Answer»

It provides DIFFERENT amount of CURRENT to operate

If one APPLIANCE gets damaged , others are not AFFECTED.

Same voltage is APPLIED..

5.

Ana 12 i mark brainliest

Answer» YES the ANSWER is OPTION d.
6.

Ans 12 please give ans i mark brainliest

Answer»

ANSWER:
OPTION 4.The OBJECT does not MOVE.

7.

Write the conculsion on concave mirror

Answer»

The mirror have BIG
SURFACE example sweet shop mirror ect
mark me as BRAINLIST

8.

Range for horizontal range

Answer» ASK MEANINGFUL SENTENCE what to FIND its not CLEAR
9.

X=18t+5t^2 calculate instantaneous velocity at t=2 sec instantaneous acceleration at t=3 sec

Answer»

The ANSWER is PROVIDED below :-

10.

Write the dimensional formula of specific gravity physical quantities

Answer»

ANSWER:
DIMENSIONLESS.

11.

Why does spanner have a long handle

Answer»

For creating a huge TURNING EFFECT it CONTAIN a long HANDLE.

12.

Why the dead body is not to sink in water ?

Answer»

Hey....

A substance floats on water when it's density is LESS than water..
When someone DROWNS then the body start to sink and the air in their lungs replace slowly with water and after that density increase...

And when density of body is less than density of water then sure it will not sink and float on water surface...

HOPE this will help u...

13.

What is plasma medium

Answer» PLASMA is one of the FOUR fundamental state of MATTER and was first described by chemist IRVING langmuir in the 1920S....
14.

which of the following substance have a tendency to move from stronger to the weaker part of an external magnetic field

Answer»

Hope This is answer which you desire for.

Final Answer : All Diamagnetic Substances like Bismuth,Zinc,Silver,Gold,lead,Water,Hydrogen

Solution:

1) Diamagnetic Substances have TENDENCY to MOVE from stronger to weaker PART of magnetic field.

=>Unlike,the way MAGNET attract metals like iron,it would REPEL (weakly) a diamagnetic substance.

=>These Substances are faintly magnetised when placed opposite to the direction of magnetic field .'

15.

New unit of force is 10newton New unit of energy is 100J find New unit of lenght

Answer»

100 = 10×S
as WORK done is convert into its energy so apply formula
W = F×S
i.e. new UNIT of LENGTH is 10M.....

16.

Why sensitivity of voltmeter not expressed in mili ohms?

Answer»

Voltmeters GIVE readings of ELECTRIC POTENTIAL, while mili ohms is a measure of resistance.

17.

Why our head does not crush despite it carries a weight of 1000kg air?

Answer» HEYA ANSWER is here.......



18.

If a man is taking load on his head so why there is no force

Answer»

Because it can't do WORK
and work DEFINATION is a push or PULL acting on an object is CALLED force.

plz mark as brainlist

19.

Why is the effect of beta particles on a photographic plate more than that of alpha particle?

Answer»

Beta PARTICLES are more radioactive and ENERGETIC than the alpha PARTICLE and HENCE, their effect on a photographic PLATE is more than that of alpha particle.

20.

Why do we need units and measurements-- 1 physics?

Answer»

In ORDER to IDENTIFY ND SPECIFY them

21.

Why does surface tension and viscosity decrease with temperature?

Answer»

Surface tension and viscosity result due to the inmolecular attractions or more simply vander waal's forces.when temperature of a body is raised the particles of the body start gaining more kinetic energy that is they start MOVING more vigorously.since the volume of any body increases on heating therefore the intermolecular attractions become more and more less resulting in decrease of surface tension and viscosity which are due to attraction of a molecule by its neighboring MOLECULES or bottom molecules as in the case of surface tension.the SUMMARY is that more the kinetic energy of a body,more is the motion of particles and the faster the particles move the lesser is the intermolecular attractions........
hope it helps U if any query plz let me KNOW.

22.

What is the earth's layer where which we live is called.................

Answer»

The EARTH LAYER in which we LIVE is CALLED an CRUST

23.

Why we should not keep magnet near television or computer r?

Answer»

Earlier TVs USED to have a cathode RAY tube (CTR) which are affected by MAGNETS. But lcd or led screen tvs dont have this problem.
I hope it is helpful for you..... ^_^

24.

Why black blankets are hotter than soft blankets of the same kind?

Answer»

Black COLOUR absorbs more HEAT than any other colour and HENCE is HOOTER most of the times.

25.

Whivh unit of concerntration does noy depend on temperature

Answer»

ANSWER:

EXPLANATION:

MOLALITY doesn't DEPEND on TEMPERATURE

26.

a car travels with speed v1 for the first half of the journey time during the second half of the journey time it traveled with a speed of v2 for the half of the distance and with a speed of v3 for remaining journey distance find the average speed.

Answer»

Explanation:

In classical theories of GRAVITATION, the changes in a gravitational field propagate. A CHANGE in the distribution of energy and momentum of matter RESULTS in subsequent alteration, at a DISTANCE, of the gravitational field which it PRODUCES.

27.

Write different methods for conversion of states of matter

Answer»

-from solid to liquid. MELTING or fusion
-from liquid to GAS VAPORISATION or boiling
-from gas to liquid. CONDENSATION
-from liquid to solid. freezing
-from gas to solid. sublimation
(without liquid state)
-from solid to gas. sublimation
(without liquid state)

28.

Why one use soap in order to remove a tight ring from finger?

Answer»

The SOAP WATER REDUCES the friction so the ring can come out.

29.

Symbol of Kelvin answer fast

Answer» HELLO here is your ANSWER by SUJEET yaduvanshi



K


thanks for the
30.

Which colour of visible light has minimun velocity in glass?

Answer»

My ANSWER Is :-
VIOLET COLOUR

31.

a150 train is moving with a uniform velocity of45km/h the time taken by the train to cross a bridge of length 850 meters

Answer»

The ANSWER is 40 SECONDS.

32.

(i) Distance =Speed X time , Speed/time ,time/Speed.(ii)The distance travelled in a unit time in a specified direction is called-(iii)Abody moving with a constant velocity will have-

Answer» 1)=SPEED X time
2)displacement
3)uniform velocity
33.

World largest particle physics laboratory in switzerland

Answer» WORLD's BIGGEST Particle Physics LabMay Idle All Accelerators in 2012. PARIS—Particle physicists and science fans EVERYWHERE knew that the EUROPEAN particle physics laboratory, CERN, near Geneva, Switzerland, WOULD shut down the Large Hadron Collider (LHC), the world's largestatom smasher, for all of 2012 for repairs
34.

A sound wave travels at a speed of 340 m/s. If its wavelength is 2cm, what is the frequency of the wave? Will it be in the audible range?

Answer»

Frequency=velocity/wavelength
frequency= 340/2
=170Hz
it is AUDIBLE

35.

Please define me velocity time graph

Answer»

The slope of a velocity graphrepresents the ACCELERATION of the OBJECT. So, the VALUE of the slope at a PARTICULAR time represents the acceleration of the object at that INSTANT.

36.

The grandparents and parents of two-year old girl are playing with her in a room. A sound source produces a 28-kHz sound. Who in the room is most likely to hear the sound?

Answer»

Non of them can HEAR this SOUND ... but animals like MOSQUITO DOGS and BATS can hear them

37.

When a wave enters a new medium which property remain unchanged?

Answer»

When a WAVE ENTERS a new MEDIUM its frequency REMAINS unchanged.

38.

the current rating of a fuse wire is i if its length is doubled and radius s made one fourth of its value what will be its new current rating?

Answer»

Since RESISTANCE is directly proportional to length and indirectly proportional area of CROSS section.
Therefore the resistance increases to 8 times
Since current is indirectly proportional to resistance therefore the NEW current rating WOULD be one eighth of I

39.

What would happen if there werevno standard units of measurement?

Answer»

If there were no standard units of measurement then our lives would be miserable because measurement helps in STITCHING clothes and building houses and other OBJECTS that we use in our DAILY lives and it is NECESSARY as it is CONSIDERED by the whole world.
PLEASE MARK IT AS A BRAINLIEST ANSWER IF YOU FIND IT USEFUL

40.

What will happen to a balloon that has been fully inflated and is put in a hot place?

Answer» IPL PLAYERS will PUT the HOT PLACE
41.

The characteristic of the sound that describes how the brain interprets the frequency of sound is called,Pick the correct answer.A) Pitch B) loudness C) quality D) sound

Answer» B)Loudness

I THINK this is CORRECT...
42.

What type of lubrication regime used for friction bearings?

Answer»

I DONT no you KNOW ...........
.

43.

45 meters of copper wire cost is 3240 and what will be thw cost of 24 meters copper wire

Answer» 45 METERS COPPER COST 3240
1 METER copper cost 3240/45
24 meters copper cost 3240/45×24=1728
44.

When we increase the loudness of sound of a TV, the property of sound that changes is,Pick the correct answer.A) amplitude B) frequency C) wavelength D) speed

Answer»

A)amplitude
this is the ANSWER for this QUESTION

45.

18. light from bulb falls on a wodden table but no photon electrons are emitted why

Answer»

Because v° for WOOD is HIGHER than EMITTED from BULB.

46.

Hertz stands for oscillations per,Pick the correct answer.A) second B) minute C)hour D) milli second

Answer»

The ANSWER is A) oscillations per SECOND.

as we know, Hertz has dimension [T^-1].

the oscillation has know DIMENSIONS so the required physical quantity for [T^-1] is per second.

47.

When the net force acts on an object the object will be accelarated in the direction of force

Answer»

The OBJECT will ACCELERATE in the DIRECTION of net FORCE.because the opposite force or components of force will CANCEL out.

48.

What is the name of principle behind working of pendulum clock?

Answer»

Feramine PRINCIPAL of PENDULUM clocck

49.

What is the most accurate measurement of glomerular filtration rate?

Answer»

Hiiiiiiii........

GLOMERULAR filtration rate (GFR) describes the flow rate of filtered fluid through the kidney. CREATININE clearance rate (CCr or CrCl) is the volume of BLOOD plasma that is cleared of creatinine per unit time and is a USEFUL MEASURE for approximating the GFR.

50.

Is the distance between object decreases then the gravitational force between the object will

Answer»

The gravitational force is INVERSELY proportional to the SQUARE of distance between objects.

so gravitational force will be INCREASED by square of the distance DECREASED.