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.

What do you understand by spectral efficiency if higher order (M array)

Answer»

The Arabian Sea was FORMED within the PAST roughly 50 million YEARS as the INDIAN SUBCONTINENT collided with Asia.

2.

An object of 30 kg is moved with a velocity of 2 m/s on a horizontal smooth surface. What is the velocity of the block for 4 seconds if force of 40 N is applied on it in the direction of force?

Answer» GIVEN
F=40N
m=30kg
then a = F/m
         a= 40/30 = 4/3 m/s^2
V=u+at
  =2+ 4/3 X 4
  = 22/3
3.

How long does it take light to travel from the moon to earth?

Answer» MOON is 384000 KM away from the earth. Speed of light is 300000 km /s. So it will take about 1.28 seconds for light to REACH Earth.
4.

5 example of reflection in daily life

Answer»

1. MIRROR
2. WATER
3. metallic objects
4. utensils
5.television

5.

Only for brainleistUrgent pls

Answer»

U can SOLVE like this.

INNER radius of hemispherical bowl = 5 CM
Thickness of the bowl = 0.25 cm
Outer radius (r) of hemispherical bowl = (5 + 0.25) cm
= 5.25 cm
Outer CSA of hemispherical bowl = 2πr2
= 2 * 22/7* (5.25)2
= 173.25 cm2

6.

Could not load the 'listen' gem. Add `gem 'listen'

Answer»

I've got an API mode Rails 5 app that won't let me run rake routes or rails s. The error I get is:

$ rake routes
rake aborted!
LoadError: Could not load the 'listen' gem. Add `gem 'listen'` to the development group of your Gemfile
.../config/environment.rb:5:in `'
LoadError: cannot load such file -- listen
.../config/environment.rb:5:in `'
Tasks: TOP => routes => environment
(See full trace by running task with --trace)
I've verified that listen is in the development group in my Gemfile:

group :development do
gem 'listen', '~> 3.1.5'
# Spring speeds up development by keeping your application running in the background. Read more: HTTPS://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end
And that it's in my Gemfile.lock:

$ cat Gemfile.lock | grep 'listen'
listen (3.1.5)
spring-watcher-listen (2.0.0)
listen (>= 2.7, < 4.0)
listen (~> 3.1.5)
spring-watcher-listen (~> 2.0.0)
I've bundle updated, and bundle installed, and verified that gem install listen works. This was working earlier this week, but I'm not having luck going back through my commits.

$ ruby -v
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-darwin14]
I don't see it in vendor/cache but I'm not sure what to MAKE of that...

$ bundle PACKAGE | grep 'listen'
Appreciate the help!

Update:

I can "fix" the problem by putting gem 'listen', '~> 3.1.5' in the global Gemfile (and removing it from :development). Then all the errors go away and EVERYTHING works, but that seems wrong.

7.

Why the mass matrix is always positive definite

Answer»

because it is POSITIVE

8.

How does the intensity of light change with distance?

Answer» INTESITY is INVERSELY PROPTION to DISTANCE.
9.

How does the intensity of light change when half of concave mirror is covered?

Answer»

because there is no PATH of REFLECTION

10.

The magnetic field due to a short magnet at a point on its axis at distance X cm from the middle point of the magnet is 200 Gauss. The magnetic field at a point on the neutral axis at a distance X cm from the middle of the magnet is [CPMT 1971, 88; MP PET 1985]A) 100 Gauss B) 400 Gauss C) 50 Gauss D) 200 Gauss

Answer»

The MAGNETIC FIELD at the DISTANCE X is 100gauss

11.

Why does a suction cup not stick on a rough surface. ?

Answer»

It doesn't create a VACUUM because there is no CLEAN connection between the SURFACE of the suction cup and the surface of the object.

12.

Force and torque experienced by an electric dipole in a uniform electric field

Answer» HEYA.....

_____________________________________________________________

QUESTION:- force &torque experienced by an electric dipole in a uniform electric field?

ANSWER:

Consider an electric dipole placed in a uniform electric field of strength E such that it's dipole moment p makes an angle theata with the direction of E

Let 2l be the length of the dipole
With +Q and -q charges

The force on the charges is

F+−→ = +qE→

F−−→ = −qE→

The components of force perpendicular to the dipole are:

F⊥+ = +qE sinθ

F⊥− = −qE sinθ

Since the force magnitudes are equal and are separated by a distance d, the torque on the dipole is GIVEN by:

Torque (τ) = Force × distance seperating forces

τ = d qE sin θ

Since dipole moment is given by

p = qd

And the direction of the dipole moment is from the positive to the negative charge; it can seen from the above equation that the torque is the cross product of the dipole moment and electric field. Notice that the torque is in the clockwise direction (hence negative) in the above figure if the direction of Electric field is positive.
Thus,

τ = −pE sin θ

Or,

τ→ = p→ × E→

|τ→| = |p→ × E→| = pE sin θ

_____________________________________________________________

Hope it helps
=============


13.

in a Platinum resistance thermometer the resistance at 0°C and 100°C is 5.34 and 6.34 ohms respectively.Calculate the temperature when the resistance is 5.24 ohm.. ☆☆NO SPAM ANSWERS☆☆

Answer» HOPE this HELPS any DOUBT PLEASE COMMENT
14.

The liquid metal that has the highest thermal conductivity is

Answer»

Sodium 140 W/mk has the HIGHEST thermal conductivity ..

HOPE helped..

15.

What is the force of 1 N acting over an area of 1 m square called?

Answer»

It is KNOWN as PRESSURE

16.

Does the force of gravity act on dust particles? explain.

Answer»

Yes but since AIR is a CONTINUOUS medium it does n't sets down

THANKS!!

Please mark the answer as BRAINLIEST if you like it.

17.

What are the uses of vernier caliper

Answer» USE is to MEASURE very SMALL MEASUREMENT
18.

For steady flow small change in elevation give relationship between change of velocity and pressure

Answer»

This article is about Bernoulli's principle and Bernoulli's equation in fluid dynamics. For Bernoulli's theorem in probability, see law of large numbers. For an unrelated topic in ordinary differential equations, see Bernoulli differential equation.



A flow of air through a venturi meter. The kinetic energy increases at the expense of the fluid pressure, as shown by the difference in height of the two columns of water.

Play media

Video of a venturi meter used in a lab experiment

In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.[1][2] The principle is named after Daniel Bernoulliwho published it in his book Hydrodynamica in 1738.[3] Although Bernoulli deduced that pressure decreases when the flow speed increases, it was Leonhard Euler who derived Bernoulli's equation in its usual form in 1752.[4][5] The principle is only applicable for isentropic flows: so when the effects of irreversible processes (like turbulence) and non-adiabatic processes (e.g. heat radiation) are small and can be neglected.

Bernoulli's principle can be applied to various types of fluid flow, resulting in various forms of Bernoulli's equation; there are different forms of Bernoulli's equation for different types of flow. The simple form of Bernoulli's equation is valid for incompressible flows (e.g. most liquid flows and gases moving at low Mach number). More advanced forms may be applied to compressible flows at higher Mach numbers (see the DERIVATIONS of the Bernoulli equation).

Bernoulli's principle can be derived from the principle of conservation of energy. This states that, in a steady flow, the sum of all forms of energy in a fluid along a streamlineis the same at all points on that streamline. This requires that the sum of kinetic energy, potential energy and internal energy remains constant.[2] Thus an increase in the speed of the fluid – IMPLYING an increase in its kinetic energy (dynamic pressure) – occurs with a simultaneous decrease in (the sum of) its potential energy (including the static pressure) and internal energy. If the fluid is flowing out of a reservoir, the sum of all forms of energy is the same on all streamlines because in a reservoir the energy per unit volume (the sum of pressure and GRAVITATIONAL potential ρ g h) is the same everywhere.[6]

Bernoulli's principle can also be derived directly from ISAAC Newton's Second Law of Motion. If a small volume of fluid is flowing horizontally from a region of high pressure to a region of low pressure, then there is more pressure behind than in front. This gives a net force on the volume, accelerating it along the streamline.[7][8][9]

Fluid PARTICLES are subject only to pressure and their own weight. If a fluid is flowing horizontally and along a section of a streamline, where the speed increases it can only be because the fluid on that section has moved from a region of higher pressure to a region of lower pressure; and if its speed decreases, it can only be because it has moved from a region of lower pressure to a region of higher pressure. Consequently, within a fluid flowing horizontally, the highest speed occurs where the pressure is lowest, and the lowest speed occurs where the pressure is highest.[10]

19.

How high does the 2kg mass make it after 6kg mass hits the other side of the board

Answer»

This happens all because of GRAVITATIONAL acceleration......

W= m*g

The HEAVIER the MASS will be...the more FORCE it will experience

Hope it helps....

20.

Which of the following changes does not exist in nature ?(A).4.8×10 ki power -19(B)16×10 ki power -19(C)4× """""""""""""""""""(D)all of these

Answer» HELLO friend your answer!!!
I THINK OPTION C
21.

a force can move a stationary object. if force is applied to a stationary object, does it always move ?

Answer»

No,
It is not necessary.

If force is applied on an OBJECT it will move only if the force applied is greater than the FRICTION acting on the surfaces of that object.

If the force is not ENOUGH and is less then the surface friction then the object will not move and will REMAIN stationary.

22.

if an incident ray striking the surface of a plane mirror at 15 degree theb by what angle the mirror should be rotated to make the angle of reflection horizontal to the mirror

Answer»

Hsghshsnegejeoensbdj

23.

Second biggest concrete gravity dam in the world is what

Answer» HEY Friend!
______________________________
✍️
.
.
Sardar Sarovar Dam on the Narmada River is the SECOND greatest Concrete Dam in the world.
.
.
The first in the CATEGORY is the Grand Coulee Dam in the UNITED States.
________________________________
Please FOLLOW me
24.

Distinguish between Resistivity and resistance.GOOD LUCK GUYZZ

Answer» RESISTIVITY is the property of the conductor due to which it offers resistance to the flow of current through it . It is measured by the resistance OFFERED by 1M length of WIRE of that material of area of cross section 1 m2. Resistivity of the material depends only on its material and TEMPERATURE.
25.

Define watt hour. How many joules are equal to 1 watt hour?GOOD LUCK

Answer»

Olá User!
A very Gud eve!!
Here's ur answer.

▶ Watt Hour :
One watt hour is the ENERGY consumed when one watt of POWER is used for one hour.

▶ It is a unit used for ELECTRICAL energy.

▶ 1 watt hour or 1 W h = 3600 JOULES.
As, 1 W/s = 1 Joule.

Hope it helps!!

26.

Relationship between transmittance and error in particle size analyzer

Answer»

The ANSWER to that QUESTION is do not

27.

Two rods of same material have same length and area

Answer»

Then they will POSSES same RESISTANCES....

28.

Heya frnds.......... One more question of Physics. The question goes like this= How many electrons pass through a conductor in 0.2 second if current passing through it is 0.5A????? No silly answers required.

Answer»

We know I = Q/ t. since Q = ne where N is no.of ELECTRONS and e is charge of electron.
I = Q/t = ne/t
=> I = ne/t
=>0.5 A = n× 1.602 ×10 ^-19/0.2
=>0.5 = n× 8
=>n = 0.5 / 8
= > n = 0.0624 × 10^-19


hope it HELPS U

29.

State the law of combination of resistances in parallel?Goooooood Luckkk

Answer»

I THINK it will be HELPFUL for U

30.

A juggler tosses a a ball up in the air with initial speed u. at instant it reaches the maximum height H. he toses up a second ball with same initial Speed. the two balls will collide at a height.1. H/42.H/23. 3H/44. (3H/4)^1/2no spam and plz. plz solve in detail.Detailed ans will be marked as brainliest

Answer»

Heya......!!!

________________

Let the Displacement be S1 and S2 for the 2 balls

According to the question firstly the Juggler tosses a ball with speed ( u ) and the ball reaches the maximum height ( H ) and now that ball will fall downwards .

So ,, for the first ball S1 = 1/2×gt² 

For second ball which is also thrown UPWARD with velocity ( u )

S2 = ut - 1/2×gt² 

=> S1 + S2 = H

→ 1/2×gt²  + ut - 1/2×gt²  = H

➡ ut = H. ........... ( i )

=>> H = u²/ 2g ........( ii )

Then = t = u/2g

PUTTING these values in S2 so that we could KNOW that where the balls will COLLIDE .

S2 = u×u/2g - 1/2g×u² /4g

=> 3u² ÷ 4g

➡ 3H/4 .

---------------------

Hope It helps You. ☺

31.

Calculate resistance when one terminal is zero

Answer»

A: ELECTRONS are negatively charged, and so are attracted to the positive END of a battery and repelled by the NEGATIVE end. So when the battery is hooked up to SOMETHING that lets the electrons flow through it, they flow from negative to positive.

32.

Anyone could able to solve the question which based on class 12 physics?

Answer» YES FRIEND I am ABLE to SOLVE them.
__________________________

Hope it HELPS
33.

the velocity of a body moving vertically up is 49m/sat half the maximum height . The height to which it could further rise up is?

Answer» INITIAL velocity is 49 m per sec and final velocity is 0 n the gravitational force is 9.8 m per sec SQ so by using the formula v^2-U^2=2gh, we can find the ANSWER.
Hope it helps u dear
34.

What is precharging of capacitor in modular multi level converter

Answer»
The capacitor of each module of the MODULAR MULTILEVEL Converter needs to be pre-charged to a certain voltage level to enable GENERATION of DESIRED voltage at the output .

35.

Mutual inductance between two magnetically coupled coils depends on

Answer»

The mutual inductance is a depends upon


• seperation


• number of turns


\underline \bold{Mutual\: inductance}


The phenomena of inducing current emf in an inductor as a result of GROWTH or DECAY of current in NEARLY inductor is called as mutual induction.


If two inductors are coupled inductively then the flux linked in an inductor depends DIRECTLY on the instant current in the the inductor.


¢ is directly proportional to I


¢ = M I


where M is called COEFFICIENT of mutual inductance.


The value of mutual inductance depend on the linkage of flux which is depending on the separation orientation of the two inductors.


The coefficient of mutual induction is numerically equal to the flux linked in the inductor caused by the unit current flowing in the nearby inductor.

36.

Which gass is filled in the tires of vechiles

Answer» NITROGEN is the GAS USED in VEHICLES
37.

Please solve the following question

Answer»

Given that the TIME for which force x is EQUAL to 10 seconds
the MASS of the BODY is equal to 10.2 kilogram
initial velocity is equal to zero
since the force caesars to ACT on the body after 10 second then the rest of the distance is covered with uniform velocity so the final velocity is equal to 0.5/5=0.1m/s

since the force is equal to product of mass and acceleration
=10.2×(10.2×0.1-0)/10
=10.2×1.02/10
=1.04N

38.

What will happen if neutrinoless double beta decay is proved right

Answer» NOTHING but it can BLAST
39.

Onions and gladioli grow fromA) bulbs B) roots C) spores D) buds on leaf margin

Answer» HEY MATE here is your ANSWER.........

They GROW from bulbs.

Hope it helps★★★★★
40.

Mushrooms reproduce throughA) spores B) modified stems C) buds on leaf margin D) fission

Answer»

The ANSWER is A) Spores.

Hope it HELPS :)

41.

A body is accerates at constant 309 km/s2 for 30 hrs .Find the distance covered during motion

Answer» DISTANCE = 1.8* 10^12
42.

What is current??.............

Answer»

A FLOW ELECTRICITY.

43.

A bus accelerates uniformly from rest and acquires a speed of 72kmph in 20 sec find acceleration

Answer» HI...☺

Here is your ANSWER...✌

GIVEN THAT,

Initial VELOCITY , u = 0 m/s

Final velocity

v = 72 km /h

v = 72 × 5 / 18 m/s

v = 4 × 5 m/s

v = 20 m/s

Also given that

Time TAKEN , t = 20 s

Now,

We know that,

Acceleration

a =  \frac{v - u}{t}  \\  \\ a =  \frac{20 \:  - 0}{20}  \: m/ {s}^{2}  \\  \\ a = 1 \: m/ {s}^{2}

HENCE,

The acceleration of bus was 1 m/s²
44.

Angular reactive forms pattern validation error

Answer»

Hen presenting FORMS to your users it’s CONSIDERED very user friendly to give them immediate feedback on what they type is actually correct. Besides that it could also limit the AMOUNT of requests to server as you would be ABLE to catch 99% of the errors before submitting your form the server.

45.

When spores of fungi in a bread piece are released, why do they keep floating in air?A) they are light B) they can move only slowly C) they are asexual reproductive bodies D) all of the above

Answer» HELLO buddy..
Harshi this side..

OPTION A is correct

Hope it HELPS you
46.

The cell which results after fusion of gametes is calledA) Fertilization B) egg C) Zygote D) none of these

Answer» C) Zygote

Hope it HELPS:-))
47.

Free learned no site for mole cobcept

Answer»

Www.pbc.com is the BEST ANSWER

48.

What is parelle combination in electric current

Answer»

In a parallel circuit, all COMPONENTS are connected ACROSS each other, forming exactly two sets of ELECTRICALLY COMMON points.

In a parallel circuit, the voltage across each of the components is the same, and the total current is the SUM of the currents through each component.

49.

Different ways of deriving gravity anomaly in satellite missions

Answer»

D7tdtt7coycyoyoy8vu8v96vv9

50.

Role of different non-conventional and renewable energy sources Considering their specific utility.

Answer»

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