Explore topic-wise InterviewSolutions in Current Affairs.

ANSWER:

B)REFRACTION

Explanation:

LIGHT refracts at a boundary because of a change in SPEED. There is a distinct cause-effect relationship. The change in speed is the cause and the change in direction (refraction) is the effect.

1cal=4.186joules

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EXPLANATION:

What is UR QUESTION......

ANSWER:

a law STATING the electric current is proportional to voltage and inversely proportional to resistance.

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Answer:

may be the answer is no... bcoz if velocity is ZERO then how can ACCELERATION is POSSIBLE

Answer:

A measurement system can be accurate but not precise, precise but not accurate, neither, or both. For EXAMPLE, if an experiment contains a systematic error, then increasing the sample SIZE generally increases precision but does not IMPROVE accuracy. 

2)MV is the answer

as momentum=mass*velocity

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hi

Specific heat GIVES the amount of heat energy required for heating a SUBSTANCE of 1 unit mass by 1 °C. So more the specific heat, more the energy required for heating the substance. ... 2) Materials of high specific heat can be USED as INSULATORS. For example WOOD has a high specific heat.

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Answer:

See steps!

Explanation:

• MOVE the screen towards or away from the lens until a sharp clear image is SEEN on it. Measure the image distance (v), between the lens and the screen.

• Substitute the VALUES of u and v in the formula: vuf.

• 111. += and HENCE determine the focal.

• length (f) of the lens. u.

• v. Ray box.

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Explanation

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ANSWER:-

REFER the ATTACHMENT

Answer:

Tensors, defined mathematically, are SIMPLY arrays of numbers, or FUNCTIONS, that TRANSFORM according to certain rules under a change of coordinates. In physics, tensors characterize the PROPERTIES of a physical SYSTEM

Answer:

EXPLANATION:

Convex MIRROR:

Radius of Curvature=+90cm (GIVEN)

So focal length =+45 cm (f=R/2)

u=-15 cm (given)

Using mirror formula,

1/f = 1/v + 1/u

1/45 + 1/15 = 1/v

v=45/4 cm

So, image distance is 45/4 cm.

Nature: Virtual Erect

m=-v/u

=3/4.

ANSWER:

No

Explanation:

To solve such question we need to know the definition of displacement and distance.

Distance is the total* length between two points.

And displacement is the shortest* length between two points.

As total length can't be less than shortest length.

Thus distance is greater than displacement or EQUAL equal to displacement for linear motion.

So displacement = 3m and distance = 2M is not POSSIBLE. But it's inverse can be true.

Answer:

A FORCE can do one of four things to an object:

Make it speed up - ACCELERATE.

Make it slow down - DECELERATE.

Change its direction.

Change its shape.

Explanation:

The Effects of Forces. A force acting on an object may CAUSE the object to change shape, to START moving, to stop moving, to accelerate or decelerate. When two objects interact with each other they exert a force on each other, the forces are equal in size but opposite in direction

Explanation:

The SERIES arrangments not used for connecting domestic Electrical APPLICANCES because it has following disadvantages:-

1. In series arrangments the current flown in circuit get reduced.
2. In series arrangments the equivalent resistance is more than sum of all individuals resistance.
3. In series arrangments if one component is failed then the circuit get BREAK .
4. In series arrangments the heat produced is more .

REASON:-

Series arrangments :- The ARRANGEMENTS of resistance in which resistance is connected one by one or end by end.

Due to the increase in effective resistance they are not used as house holding curcuits .

ANSWER:

Yes, it is difficult to drive a nail into wooden block WITHOUT supporting it.

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A is the answer because SPEED VELOCITY and ACCELERATION are relative TERMS

Vernier scale is a visual AID to take an accurate measurement reading between two graduation MARKINGS on a LINEAR scale by using mechanical interpolation; thereby increasing resolution and REDUCING measurement uncertainty by using Vernier acuity to reduce human estimation pls LIKE and follow me

ANSWER:

force

Explanation:

si unit NEWTON if we APPLY force from BAT to ball the ball STARTS rolling

Explanation:

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heya..

here is your ANSWER..

For the resultant to be MAXIMUM, both the vectors must be parallel.

hence the angle between them must be 0 degrees.

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Answer:

8785745 is the answer in this QUESTION PLEASE mark it in brainly QUESTIONS

Answer:

20m and 0 m

Explanation:

According to the given question,

r = radius = 10m

And we are asked displacement when the particle COMPLETES half and FULL cycle.

We know,

Displacement is the shortest length between two points.

When particle completes half cycle, means it's at the opposite SIDE from where it started.

Thus displacement here will be equal to the diameter of the circle = 2r = 2×10=20m ans.

Again,

When the particle, completes full circle then it's final and INITIAL POSITION are same thus displacement = 0m ans.

ANSWER:

i hope its gonna HELP U..

Explanation:

80000 HOURS URGENT it is BIG positive imphat it your careey it is important to WORK on a glodal problem

Answer :-

Myopia Or Short Shightedness :-

The inability of an eye in veiwing long distance objects is called myopia or short Shightedness.

Reason :-

• This defect is caused by an elongation of eye ball and excessive curvature of the lens .
• EXCESSIVE CURVATURE of eyelens and eyelens becomes more converging.

Method of correction:-

• The short Shightedness is corrected by using a concave lens of suitable POWER or focal length.Which diverges and SHIFTS the image to the retina.

Umnn the QUESTION SEEMS weird but maybe, final VELOCITY is the ANSWER.

GIVEN that

✔Distance from OBSERVATION POINT (R) = 20 cm = 20 ×

✔Electric Field (E) = 1.5 × 10³ N/C

We KNOW that

♦E =

•°• 6.6 ×

_______________________________________________

Answer:

➡️at FOCUS

Explanation:

➡️the object should be PLACED at focus in front of CONCAVE mirror to produce an inverted magnified and real image.

image is formed at infinity.

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Hawking radiation is BLACK-body radiationthat is PREDICTED to be released by black holes, DUE to quantum effects near the event horizon. It is named after the PHYSICIST Stephen Hawking, who provided a THEORETICAL argument for its existence in 1974.

yes a object can have that. when we throw a ball upwards when it is at the highest point its velocity becomes ZERO but acceleration DUE to GRAVITY is still acting on it which will now bring itdown. So for just a short instance the conditionis possible

ANSWER:

velocity :- LT^-1

time:-T^1

acceleration :- LT^-2

mass:- M^1

distance:-L^1

temperature :-K^1

speed LT-1

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ANSWER:

motion exerted by TRUCK- linear motion , CIRCULAR motion

motion exerted by tractor- curve line motion, circular motion

ANSWER:

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ANSWER:

But what is the QUESTION

It DEPENDS on its NATURE and PRESSURE HOPE it HELPS

ANSWER: 6 km/hr.

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Answer:

given :-

INITIAL velocity = u = 0m/s

acceleration = 4m/s²

time = t = 10 SECONDS

by THIRD equation of motion we get,

➡ s = ut + 1/2 at²

therefore the distance covered by the car after 10 seconds = ut + 1/2 at²

= (0 × 10) + 1/2 × 4 × (10)²

= 2 × 100

= 200m

hence, the distance covered by the racing car after 10 seconds is 200m.

Answer:

Explanation:

H-parameters are one system for characterizing bipolar transistors. ... That MEANS it is the ratio of output to input in the COMMON emitter configuration, which in turn means it is the ratio of collector CURRENT to base current, which is BASICALLY the gain of a bipolar TRANSISTOR

Answer:

Linear MOTION refers to a motion in a straight PATH WHEREAS circular motion refers to motion in a circular path. ... But in circular motion the person will always experience acceleration because DIRECTION of the person is always changing. Example of linear motion - a car moving in a straight ROAD.

Answer:

In direct CURRENT (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. The VOLTAGE in AC CIRCUITS ALSO periodically REVERSES because the current changes direction.

ELECTRIC POTENTIAL is define as the potential of cell consisting of ELECTRON in in question ACTING as a cathode standard hydrogen electrode acting as an ANODE

ANSWER: 5 seconds.

Explanation:

GIVEN in the ATTACHMENT.

.......... ............

..

..

.......

..

EXPLANATION:

Given-

u=50m/s

v=0m/s

s=10cm=10/100=0.1m

a=?

v^2=u^2+2as

0^2=50^2+2×a×0.1

0=2500+0.2a

-2500= 0.2a

a=-2500/0.2

a= -12500m/s^2

what do you WANT to KNOW

ANSWER:

UNIFORM MOTION and uniform CIRCULAR motion

<P>Answer:

4)Beryllium(Be)

Atomic Number: 4

Valency = 2

5)Boron(B)

Atomic Number: 5

Valency = 3

6)Carbon(C)

Atomic Number: 6

Valency = 4

7)Nitrogen(N)

Atomic Number: 7

Valency = 3

8)Oxygen(O)

Atomic Number: 8

Valency = 2

9)Fluorine(F)

Atomic Number: 9

Valency = 1

10)Neon (Ne)

Atomic Number: 10

Valency = 0

11)Sodium(Na)

Atomic Number: 11

Valency = 1

12) Magnesium(Mg)

Atomic Number: 12

Valency = 2

13) Aluminium(Al)

Atomic Number: 13

Valency = 3

14) Silicon(Si)

Atomic Number: 14

Valency = 4

15) Phosphorus(P)

Atomic Number: 15

Valency = 5 , 3

16) Sulphur(S)

Atomic Number: 16

Valency = 2

17) Chlorine(Cl)

Atomic Number: 17

Valency = 1

18) Argon(Ar)

Atomic Number: 18

Valency = 0

19) Potassium(K)

Atomic Number: 19

Valency = 1

20) Calcium (Ca)

Atomic Number: 20

Valency = 2

21) Scandium (Sc)

Atomic Number: 21

Valency = 3

22) Titanium (Ti)

Atomic Number: 22

Valency = 4

23) Vanadium (V)

Atomic Number: 23

Valency = 5 , 4

24) Chromium (Cr)

Atomic Number: 24

Valency = 2

25)Manganese(Mn)

Atomic Number: 25

Valency = 7 , 4 , 2

26)Iron (Fe)

Atomic Number: 26

Valency = 2 , 3

27) COBALT (Co)

Atomic Number: 27

Valency = 3 , 2

28)Nickel (Ni)

Atomic Number: 28

Valency = 2

29)Copper (Cu)

Atomic Number: 29

Valency = 2 , 1

30)Zinc(Zn)

Atomic Number: 30

Valency = 2

ANSWER:

No it doesn't CHANGE with change in MEDIUM or SOURCE