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.

Si and cgs unit of energy of conversion factor

Answer»

Yes
they are ENERGY. CONVERSION FACTOR

2.

Give reason of the fragrance of increase stick spreads out in air to distance

Answer»

Because space between the air MOLECULES is very MUCH so the fragrance PARTICLE spread to all the AREA

3.

Why is there athick bed of sand a high jumped to fall on after his jump?

Answer» HEY!

_______________

An athlete is made to fall on a cushioned BED. This is just to increase the time of fall of athlete after a jump. This is to prevent INJURIES as well.

If we fall on a cemented AREA, we may get hurt. But it won't be in case of a soft bed.


_________________

Hope it helps...!!!
4.

Can any life exist on the moon? explain in brief.

Answer»

From view of today no any one exist freely on moon . BECOZ 4 living air and water is NECESSARY to us but these R not present on moon.

5.

Which lamp is highly intense xenon arc or deuterium lamp?

Answer» HII mate•□

》xenon ARC LAMP is HIGHLY INTENSE .

☆☆
6.

Question 33:When a tree is shaken, its fruits and leaves fall down: Why ?Lakhmir Singh Physics Class 9

Answer»

Because of GRAVITATIONAL FORCE.

7.

What is meant by term acceleration state the s i unit of acceleration?????????

Answer»

Acceleration is the RATE of CHANGE of velocity.
It's SI UNIT is meter per second SQUARE(m/s^2).
HOPE IT HELPS

8.

Difference betwn zero crossing detector and basic comparator

Answer» ZERO crossing detector. A zero crossing detector is a comparator with the reference level set at zero. It is used for DETECTING the zero crossingsof AC signals. It can be MADE from an operational amplifier with an INPUT voltage at its POSITIVE input.
Hope this helps you...
9.

Question 38:The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?Lakhmir Singh Physics Class 9

Answer»

The speed that TRAIN TRAVEL NEXT 100 km,so as to average 70 km for the whole JOURNEY is 90 km/h.

10.

What kind of energy transformations takes place at a thermal power stations

Answer»

Hey mate

In thermal power PLANTS

CHEMICAL ENERGY IS CONVERTED INTO HEAT ENERGY AND WHICH IN TURN IS CONVERTED INTO ELECTRICAL ENERGY.

Hope this helps you
Be BRAINLY by marking it brainliest.

11.

What are the two kind of charge what are the properties?

Answer»

The two kinds of CHARGES are: NEGATIVE and the positive.
Their PROPERTIES are that:
same charges repel
opposite attract.
hope it helps...

12.

Describe an experiment to demonstrate that water absorbs heat during boiling at aconstant temperature

Answer»

Heya..

Apparatus :

A thermometer that can reach 100°C or 212°F.

Time or watch.

A round - bottomed flask held by clamps on a stand.

A Bunsen burner.

250ml of water or any amount as desired DEPENDING on the capacity of the round bottomed flask.

PROCEDURE

1. Put 250ml of water in the round bottomed flask and fit the top with a thermometer.

2. Light the Bunsen burner and pit it underneath the flask.

3. Take the temperatures of the water after every minute until boiling at 100°C.

4. After the water boils, take the temperature of the water five times after every minute.

5. Plot a graph of this to see the shape of the graph.

OBSERVATIONS

The water boils at a constant temperature which is 100°C

The graph of Temperature against time shows a curve that is rising until 100°C where it becomes flat.

EXPLANATIONS

As the water is boiling the water is changing from liquid to gas and this INVOLVES breaking of bonds between water molecules. This takes energy which is supplied in form of heat energy transferred to the water through conduction and convection. This energy is used to break the bonds between the water molecules and thus CHANGE the state from water to gas. The heat energy thus does not change the temperature but rather the energy of the molecules. Hence the boiling takes place at a constant temperature.

hope helped..

13.

Internal energy of an ideal gas is a function of

Answer» PROPERTY of GAS MASS and TEMPERATURE
14.

Squeezing a piece of lemon between fingers to extracts its juice

Answer»

Applying more PRESSURE in an area so that the MATERIAL INSIDE it MOVES from high pressure to low and gets fall in the GLASS.

15.

Give the si unit of stefans constant in cgs system

Answer»

It's VALUE 5.670 367 X 10-8 W m-2 K-4
_____________________________
it's STANDARD UNCERTAINTY 0.000 013 x 10-8 W m-2 K-4
______________________________
it's
Relative standard uncertainty  2.3 x 10-6
______________________________
it's  Concise form 5.670 367(13) x 10-8 W m-2 K-4

16.

A particle is projected from the ground at an angle theeta with the horizontal with an initial speed of u. the time after which velocity vectoe of projection is perpendicular to the initial velocity

Answer» TIME= u /(g*SIN theeta)
where is is initial velocity
g is ACCELERATION due to GRAVITY
17.

an 200 M TRAIN CROSSES A 400 M BRIDGE WITH A. VELOCITY OF 36KM/HR FIND THE TIME TAKEN TO THE TRAIN TO CROSS THE BRIDGE

Answer» HEY FRIEND here is your answer D=200 m+400 m=600 m

S=36km/h=36×5÷18=10 m/SEC

T=?

T=D÷S

T=600÷10

T=60 sec 

hope it helps to you
18.

Value of planks constant???

Answer» HII..

The VALUE of PLANKS constant =6.626×10^-34..

HOPE this HELPS!
19.

What is a lunar month

Answer»

Hyy..

⭐the TIME it takes the MOON to move through the Moon PHASES is either CALLED a lunar month.
__
hope it HELPS

20.

(6). How is the size of degree defined on the Fahrenheit scale?.

Answer»

The SIZE of a degree in the Fahrenheit Scale is 1/180 times the DIFFERENCE between the upper FIXED point (boiling point of pure water, 212 degree Fahrenheit) and lower fixed point (melting point of pure ice, 32 degree Fahrenheit).

Hope it helps!!!!!

21.

An athlete completes one round of a circular track of diameter 49m in 20s. Calculate the distance covered and displacement at the end of 30s.

Answer»

Hey man..

Answer..


Given,,

TIME taken to complete one round = 20s
So,total rounds completed in 30S = 30/20 = 3/2 = 1.5

Given:diameter = 49
therefore radius = 49/2  and pi = 3.14
Now distance travelled in one round = 2*pi*r = 2*3.14*49/2
= 3.14*49 = 153.86

thus,total distance travelled in 30s = 1.5*153.86 = 230.79m

To find the displacement,
the shortest distance between initial and final position in diameter = 49M

thus,displacement of an ATHLETE completes one round of a circular TRACK = 49m

_____________&__________

Help you.

22.

Second equation of motion

Answer»

Second EQUATION of Motion. Let 'U' be the initial VELOCITY of a BODY which moves with UNIFORM acceleration 'a'. After 't' seconds let its velocity be 'v'. ... It is given that acceleration of the body is uniform.

23.

An object 0 mass 40kg is raised to a height of 5m above the ground what is its potential energy ? if the object is allowed to fall find its kinetic energy when it is half way down

Answer»

Mass=40 kg
height= 5m
g= 10ms^-2

P.E= mgh
=>40×5×10
=>2000 J

Now, if the OBJECT is halfway down,
KINETIC energy= P.E/2
=>2000/2= 1000J

assumption:- g=10 ms^-2

hope it helps u...
if YES, mark BRAINLIEST...
have a GR8 day ahead...

@TeraBhalaHo

doubts? ask it in the comment section ^_-

24.

Why are the states of motion and rest considerd relative?

Answer»

Suppose Your Fatherboarded You and Your Mother on to the train. The Train starts movingand your FATHER Waves his Hand TOWARDS Your Mother.


Now Your Mother isin Motion with respect to your Father but when you see your mother inthe compartment with you. Is She in Motion? No, She is sitting rightbeside you, not moving, at REST.

So Your mother ismoving and at the same time at rest.

To be Precise, YourMother is in Motion with respect to your Father but She is at restwith respect to you.


You See, How Onething can be in motion and at the same time at rest, The onlydifference is the POINT of Observation ( Scientifically, Frame ofReferance).


So The Motion andRest Terms are Relative.

25.

A proton and an electron are placed apart in free space find the magnitudeof the electrostatic force between them what is the nature of the force?

Answer»

Hey according to the coloumbs law ...it states That
the force of MAGNITUDE between two charge that are HELD in the space is given by ...

F = K q1 q2 / r^2.........
thus ...here the charges are opposite in nature ..HENCE the force will be of attraction between them....

26.

Why is nicrome used as heating element?

Answer» HII There!!

Nicrome wire is used as a heating ELEMENT in ELECTRICAL applainces because it has a high MELTING POINT and have a higher restivity.

Moreover, they do not get oxisidised (or burnt)


Hope it helps
27.

What is big bang theory

Answer»

This is the THEORY which EXPLAINS how our UNIVERSE was FORMED

28.

What is the formula and symbol of electrical resistance?

Answer» SYMBOL of ELECTRIC resistance is R
Its FORMULA is potential/Current

Its UNIT is volt/amp or OHM
29.

Compare the properties of solid liquid and gaseous materials

Answer»

Prop. of SOLIDS :

 1. it have a fixed VOLUME and fixed shape 2. it do ot FLOW 3. it can not be COMPRESSED much 4. it does not fill the container completely

LIQUIDS:

1. it does not have fixed shape but have fixed volume 2. it can flow  3. like solids it ALSO connot be compressed much  4.it also did not fill it container completely

GASES

1.it do not havefixed shape and volume 2. it can flow 3.it can compressed 4.it fill it container completely 

30.

The induced charge on the dieletric of a capacitor of capacitance 4f when charged by a battery of 50v

Answer»

Use general equation: Q = CV

Q = 4 Farad × 50 Volt
= 200 Coulomb

∴ Induced charge is 200 Coulomb

31.

A pebble is thrown vertically upward with a speed of20 metre per second how high will it be after 2 second

Answer» USING the S = ut + 1/2gt^2 equation;
Here, U = 20, t = 2 & G = -10

Therefore,
20×2 + 1/2×(-10)2^2
S = 20 metres
32.

When does the flow of liquid become turbulent?

Answer»

In this FLOW have not be LAYER in flow

33.

What is the total charge on 75kg of electrons?

Answer»

Number of ELECTRONS in 75 kg = 759.11×10−31759.11×10−31

=8.23×1031=8.23×1031

Mass of ONE e−=9.11×10−3kge−=9.11×10−3kg

Charge on these electrons = −8.23×1031×1.6×10−19−8.23×1031×1.6×10−19

=−1.31×1013C


hope this will HELP you

34.

Play experiment for newton's 1 st law of motion

Answer»

HEYAAAA......!!! HERE IS YOUR ANSWER....

lets take a ball bounce experiment...

Ball Bounce Experiment

Materials for the Ball Bounce Experiment:

A basketball or soccer ball, or similar bouncy ball

a smaller bouncy ball (like a tennis ball or a racquet ball).

Have an ASSORTMENT of other balls handy for further experimenting.

Procedure:

Do this experiment outside

First bounce the basketball and tennis ball side by side to compare their bounces. Start them off around chest height

Make a hypothesis (a guess) about what will HAPPEN when you stack the small ball on top of the bigger ONE and then drop it

Try it! It may take a couple tries to line them up just right but the results are pretty awesome

Explanation:

The energy of MOTION from the bigger ball is transferred into the smaller one. Most of your attention is on the sky-rocketing smaller ball, but if you look at the basketball, it doesn’t have much bounce at all!



hope its help UHHH...!!!

thnxx

35.

Three equations of motion

Answer»

Hi
.......,________________
The three EQUATIONS of motions are:

1)  v = V0 + aΔt
2)  x = X0 + v0Δt + ½aΔt^2
3) v^2 = v0^2 + 2A(x − x0)
___________________
hope it will help you ... :-)

36.

Describe an activity to demonstrate electromagnetic induction

Answer» TAKE an coil of insulated copper WIRE of NEARLY 50 turns and take a bar magnet and after that bring magnet in a to and fro motion near that coil . the could must be connected to galvanometer and WEN U complete the activity given above there will flow of electromagnetic induction
37.

Using velocity time graph prove that v2 - u2 = 2as

Answer» BRO your QUESTIONS is WRONG!!!!
38.

Which two metals are used for making the alloy bronze?

Answer» TIN and COPPER are the METALS...
39.

A resistor is cut in two equal pieces and joined in parallel.what is the resistance in combination

Answer»
40.

Denser medium will phase change when reflection take place

Answer»

during REFRACTION from DENSER to rarer MEDIUM BENDS towards the NORMAL.
41.

Any 4 slogans on conservation of water and wastage of water

Answer»

(1)A drop of WATER is worth more than a sack of gold to a THIRSTY man. (2)save Water the world is in your hands. (3)THOUSANDS have lived without LOVE,not one without water. (4)save water save earth hope it helps you.
please mark as brainliest answer please

42.

How many spheres are there on earth what are they?

Answer» 4 SPHERES are there on the earth:
1) geosphere
2)hydrosphere
3)BIOSPHERE
4)ATMOSPHERE
43.

How many resistors (in parallel) are required to carry 5A on a 220V line?

Answer» V = ir
220 = 5.r
r = 220/5
r = 44ohm
44.

Define pressure. a pressure of 100 pa acts on a surface of area 15cm2 by a block of mass 'm'. calculate 'm'

Answer» PRESSURE is defined as the force acting per unit area of surface ..
GIVEN ..
P = 100PA
A = 15 cm2
P = F / A
F = PA
F = 100×15
F = 1500N
We know
F = mg
m = f / g
m = 1500/ 10
m = 150 kg
45.

How can 3 resistors of resistance 2,3,6ohm be connected to give a total resistance of 4,1ohm

Answer»

3 and 6 in PARALLEL and 2 in SERIES with this COMBINATION

46.

An amount of work w is done by a system and q amount of heat is supplied to the system. the equation of change in internal energy of the system is

Answer»

S nxixnxhxosnsbskksskzkzdbjdldmf fhdldnz hi kdvdkjcbcjxbd in d hmm on no E NAHI KI punch you have any idea what I was just a BIT of time and where are you doing today babe how are you going out to EAT with me and you know what to do

47.

Relative density dimension

Answer»

As I KNOW... It is DIMENSIONLESS

48.

Dimension of plancks constant ?? ☺☺

Answer» PLANCK's CONSTANT (h) = Energy(E) / FREQUENCY (ν). Putting these values in above equation we get, DIMENSIONAL Formula of Planck's constant = M1L2T-1. SI unit of Planck's constant is joule-seconds (j-s).
49.

An electric bulb is rated 220 v and 100 w. when it is operated on 110 v, the power consumed will be

Answer» HEY FRIEND your ANSWER is
P=v²/R
100=220²/R
R100=48400
then R= 484
v²/R= 110×110/484=25w
50.

State the 1st, 2nd and 3rd law of motion

Answer»

1ST

An object which is at REST or in motion will TEND to be in rest or in motion until or unless an external UNBALANCED force is applied on it.

2nd

Force is directly proportional to the change in momentum of an object.

This GIVES F = ma

3rd

For every action, there is an equal and opposite reaction.