Explore topic-wise InterviewSolutions in Current Affairs.

Answer:

Concave mirrors bend inward in the center. When your face is PUT between a focus and theconcave mirror, it will reflect a magnified image. For your face, a concave mirror can even reflect the PORES and HAIR follicles on your skin. Concave mirrors are USED as MAKEUP mirrors or mirrors for shaving.

Answer:

COULOMB

ELECTRIC charge has the dimension electric current time. The SI derived unit of electric charge is the coulomb, which is DEFINED as an ampere second.

hope it helps. ...........

I think ur question is WRONG, so plz check the question again or search it in GOOGLE. OK?!

EXPLANATION:

(a)The potential difference across the ends of a given metallic wire in an electric circuit is directly proportional to the CURRENT flowing through it, provided its temperature remains the same. This is called Ohm’s law.

(b) Experiment to VERIFY Ohm's law:

Set up a circuit as shown in figure shown, consisting of a nichrome wire XY of length, say 0.5m, an ammeter, a voltmeter and four cells of 1.5V each. First use only one cell as the source in the circuit. Note the reading in the ammeter I, for the current and reading of the voltmeter V for the potential difference across the nichrome wire XY in the circuit. Tabulate them in a table. Next connect TWO cells in the circuit and note the respective readings of the ammeter and voltmeter for the values of current through the nichrome wire and potential difference across the nichrome wire. REPEAT the above steps using three cells and then four cells in the circuit separately. Calculate the ratio of V to I for each pair of potential difference V and current I. In this experiment, we will find that approximately the same value for IV  is obtained in each case. Thus the V–I graph is a straight line that passes through the origin of the graph, as shown in the figure. Thus, V/I is a constant ratio, which verifies Ohm's law.



Explanation:

ANSWER:

We KNOW that

Weight = Mass × Acceleration DUE to Gravity

So, if one WEIGHS 0.9 on Earth, Then on MARS it will be

0.9= mass (mars)× 10

(10 is the APPROX. value of g of Earth)

So, Weight on Mars will be

0.9/10

So, answer is 0.09 Kg.

ANSWER:

v2-u2=2as is the FORMULA to derivr

ANSWER:

negative

Explanation:

The DISTANCE measured in the direction of the INCIDENT light are always taken as negative

ANSWER:

USE the formula q= ne

Explanation:

N will be the no. of electrons

plz mark the QUESTION as brainliest if it HELPED u

Answer:

hey man how are U doin I dunno the answer the answer but I think I can SOLVE the 6th answer for ya it's KINDA short I'm not in studies actually and I really admire you since first so will u be my chingu I hope u say yes and here is the answer

Explanation:

paraxial APPROXIMATION: paraxial approximation is a small angle approximation used in Gaussian OPTICS and ray tracing of light through an optical system

ANSWER:

He is a DETAILED WEATHER FORECAST

If you want to increase it's attraction.

Then you should increase the size of CONDUCTOR which ACTS like a magnet when current is flown through it.

You should increase the power supply .

More is power supply More is the attraction.

For more details...Try SEARCHING on CHROME..

Hope it is useful

ANSWER:

Explanation:

8 KNOW you answer

EXPLANATION:

ksms9rirkrjrjjrjrjrjrjrnrjejeijrjru4uri

Answer:

Beam BALANCE is USED to measure the mass of an OBJECT. SPRING balance is used to measure the weight of an object. A beam balance measures the mass of the body while a spring balance measures the weight of the body TAKEN into consideration.

EXPLANATION:

total resistance in the CIRCUIT = 4 ohmes +2ohmes=6ohmes

current in the ammeter =V/R=3/6=0.5A

reading of the voltmeter =2ohmes×0.5ohmes = 1V

hope this answer will help you

plzzzz mark me as brainliest

and ALSO follow me to GET best maths ANSWERS especially for class 9 and 10 .

☆☆follow me ☆☆

__mathematics__genius

ANSWER:

HELLO!HOPE THIS HELPS YOU

Explanation:

Electric current in the conductor is due to FLOW of electrons.So it PRODUCES heat

PLZZ PRESS THNX BUTTON

AND BRAINLIEST ALSO

Answer:

Puretronics is proud to introduce Non-Contact Diameter Measurement and Control Solution with an European Company. This deivice enables the user to maintain and control the diameter of the product during the manufacuring process.

It reduces waste, manpower and saves material, at the same time it ensure consistent product output.

Its ease to operation, setup and integration with the system, makes it simplier for any operate the use the device efficiently and maintain it properly at the same time, thus increasing the life span of the device. The ALUMINIUM HOUSING makes it durable and at the same time RUGGED for tough production enviormental conditions.

The accessories and multiple output along with the device helps the user to keep TRACK of the production and ensures proper monitoring durign the process.

ANSWER:

A.In MOTION with RESPECT to EACHOTHER

ANSWER:

CONDUCTIVITY of the 2 wires will remain same as before

Explanation:

Conductivity only depends on the

1. material of the wire

2. TEMPERATURE of the wire

And it does not depend on the length of wire, hence the conductivity won't change.

ANSWER:

C) is the CORRECT answer

ANSWER:

Dear Mate !

Explanation:

Measurement is defined as the act of measuring or the SIZE of something. An EXAMPLE of measurement means the use of a RULER to determine the length of a piece of paper. An example of measurement is 15" by 25".

Hope this answer helps you.

PLEASE mark this answer as brainliest answer.

_______________________❤️

For EXAMPLE, sunlight CASTS sharp SHADOWS. Another example is REFRACTION where light passes from one transparent medium into another.... ✌️ ☑☑

_______________________❤️

Answer:

distance = speed × time

= V × 60× 5

= v× 300

= 9× 10to the POWER 10 metre

plz mark it brainliest

ANSWER:

PLEASE MARK me as BRAIN lliest

AnswEr :

We have to DERIVE s = UT + ½at² by calculus method

CONSIDER the VELOCITY - Displacement Relation :

From the First Kinematic Equation,

Thus,

Integrating on both sides,

U = -30 cm

f = -15 cm

1

f

=

1

u

+

1

v

=>

1

v

=

1

f

−

1

u

=>

1

v

=

1

−

15

−

1

−

30

=

−

1

15

+

1

30

=

−

2

+

1

30

=>

1

v

=

−

1

30

=>

v

=

−

30

c

m

.

m

=

−

v

u

=

−

−

30

−

30

=

−

1

therefore ,

The image is REAL , inverted and of same SIZE as that of OBJECT

Explanation:

If resistances is converted into single RESISTOR, it is CALLED as

EQUIVALENT Resistance.

So the equivalent resistance in this case will be

1st

We can SEE that 6 ohm and 6 ohm are in parallel.

So, 1/6+1/6=1/3

So, the parallel resistance is 3 ohm.

2nd

Now, we can see that 3 ohm and 6 ohm are in series.

So,

3 ohm+ 6ohm = 9 ohm.

Answer is 9 ohm as Equivalent Resistance.

I=V/R=220/50=4.4

Flux=n L(INDUCTANCE) ×I

L=5/4.4×1000

L=1.13×10^-3

E=1/2LI²

E=0.0218/2

E=0.0109J

I HOPE this HELPS ( ╹▽╹ )

Answer:

Consider the figure given below. Charges Q1, q2 and Q3 are PLACED at A, B and C, respectively, and 1 2 3 2 C. q = q = −q = μ DETERMINE the magnitude and the direction of the electric field at POINT P.

Angle of DEVIATION = angle Q (well I THINK it is Q but pls CHECK as your image is very BLURRY)

Angle of incidence = angle opposite to angle S, apparently, which has just been cut off from the image

Relation is:

Angle of incidence = angle of emergence

Hope I helped (Sorry but your image didn't)

ANSWER:

The Galileo's LAW of odd numbers states that the distances traveled are proportional to the squares of the elapsed times. In other WORDS, in equal successive periods of time, the distances traveled by a free-falling body are proportional to the succession of odd numbers(1,3,5,7, ETC.).

ANSWER:

Vectors are parallel if they have the same direction. Both components of ONE VECTOR must be in the same ratio to the corresponding components of the parallel vector

Hope it's HELPFUL for u

ANSWER:

d = s × t

d = 4 KM/hr × 1/4 HRS = 1 km

ANSWER:

ACCELERATION =

                   = 0-10/2.

                   =-5 m/s^2

Answer:

The CONCAVE mirror forms an image and that depends on the two parameters: the object distance and the focal LENGTH of the mirror. If the object is placed between the POLE and the focus of aconcave mirror, a magnified and erect virtual is found to be formed.

hope this helps you

PLZ mark as BRAINLIEST answer

#rocket...

Answer:

Let the Distance between A and  is X km.

First Case---

Initial Speed = 40 km/hr.

Using the Formula,

  Speed = Distance/Time

        time = Distance/Speed

        time(t1) = x/40 hr.

In SECOND Case,

Final Speed = 60 km/hr.

Thus, time(t2) = x/60 km/hr.

For Average Speed,

 Total Distance covered by the Car = x + x

                                                        = 2x km.

Total time = t1 + t2

                = x/40 + x/60

                = (4x + 2x)/120

                = 6x/120

                = x/20 hrs.

Using the Formula,

 Average Speed = Total Distance/Total Time

                          = 2x/(x/20)

                          = 2x × (20/x)

                          = 2 × 20

                         = 40 km/hr.

Thus, Average Speed of the Car is 40 km/hr.

____________________

Hope its helps.

Have a nice day.

please please mark my answer as brainliest answer.

and also follow me...✔️✔️

thx.... ❤❤❤❤❤

Answer:

no-

let's assume that the TOOTHBRUSH HANDLE is made from plastic we cannot brush our TEETH with plastic if the handle is made from the bristles we cannot HOLD the tooth brush so therefore both the handle bristles are not made of the same material...

please mark me as the brainliest hope this helps you

Answer:

ANGLE of reflection is also equal to angle of reflection, state DUE du LAWS of reflection

Answer:

3:2

Hope it helped

Pls MARK me as BRAINLIEST

ANSWER:

where is the DIAGRAM

FOLLOW me

Np/Ns=Is/Ip

Ns=1000/2= 500

Vs Is =VpIp

Vs=240×0.2/0.4

Vs=120

Pmax=VsIs=120×0.4=48

As Vs

I HOPE this HELPS ( ╹▽╹ )

Given:

A transformer has 10000 turns and 240 V , 0.2 A in the primary coil. If the current through secondary coil is 0.4 A.

To Find:

a)What kind of transformer is this?

b)Find out the voltage and number of turns in the secondary coil.

c)Calculate MAXIMUM power in the secondary coil of this transformer.

Solution:

Primary Winding:

Secondary Winding:

We KNOW the formula of transformer:

Kind of transformer:

Means turn ratio is GRATER than 1 , so it is step down transformer.

Out put voltage and number of turns in the secondary coil:

On putting respective value in above equation:

On solving, we get:

Maximum power in the secondary coil of this transformer:

Power (P) = Voltage× Current

So:

Power in the secondary coil (P) = Voltage in the secondary coil× Current in the secondary coil

Power in secondary coil = 48 W

Answer:

amplitude modulation

Double-sideband suppressed-CARRIER transmission (DSB-SC) is transmission in which frequencies produced by amplitude modulation (AM) are symmetrically spaced above and below the carrier frequency and the carrier level is reduced to the LOWEST practical level, ideally being COMPLETELY suppressed.

Explanation:

HOPE it will help you

F=mg

F= GMm/r²

mg=GMm/r²

G=GM/r²

the GRAVITATIONAL constant and the gravitational FIELD strength g are directly proportional

I HOPE this HELPS ( ╹▽╹ )

hope this will HELP you

see the photo

ok

if you like my ANSWER PLEASE mark me as brainliest

or

if you want EXTRA INFORMATION just search it

The law of CHEMICAL COMBINATION states that matter can neither be created nor be destroyed.

It meant that mass of REACTENT is always equal to mass of products.

Answer:

Uniform MOTION is motion with ACCELERATION is equal to zero and velocity is CONSTANT ex. car travelling with uniform motion.

In non uniform motion acceleration is not zero and velocity is not constant. ex. motion of bird in sky.

plz MARK it brainliest

Ello user

Ans1. It MUST occupy some space and has mass and also offer some resistances.

Ans2. Due to its indefinite molecular structure and less force of interaction between it's particles it has neither definite shape and volumne.

Ans3. This OCCURS due to a phenomenon called diffusion as the particles get DIFFUSED into the air and then reaches us we get the smell of the food being cooked.

Ans4. This is because when molecules of gases are loosely packed as compared to the molecules of liquid and the GAS particles diffuse into the gases more rapidly than the particles of liquid and hence diffusion occurs more rapidly in gaseous particles.

Hope this HELPS

Answer:

PRESBYOPIA is caused by a hardening of the lens of your eye, which occurs with aging. As your lens BECOMES LESS FLEXIBLE, it can no longer change shape to focus on close-up images. As a result, these images APPEAR out of focus.

Answer:

LET VELOCITY of train be v_{t} and velocity of SOUND be v.

1st CASE (when train is approaching observer) :

Now difference between apparent and actual frequency :

2nd case : (When train is going away from observer)

Now difference between apparent frequency and actual frequency :

Taking ratio as per question in both the cases :

So final answer :