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.

BJT is a semiconductor device in which..Participate in the conduction process

Answer»

ong>Answer:

Gerard C.M. Meijer, ... Ali Heidary, in SMART Sensors and MEMs (Second Edition), 2018

3.3.1 Introduction

In smart temperature SENSOR systems and microelectromechanical systems (MEMS), often integrated sensors are used, which combine sensing ELEMENTS with the interface electronics NEEDED to communicate with, for instance, microcontrollers. In addition to integrated sensors, in such systems also discrete sensing elements can be applied. Discrete elements are used, for instance, for calibration and TESTING. Discrete elements are also used in environments in which the temperatures are beyond the range of what interface electronics can tolerate. Table 3.1 (Meijer, 2008a) summarizes the main features of some commonly used on-chip and discrete sensing elements for temperature sensor systems and MEMS.

2.

What do you get if lead is heated with concentrated sulphuric acid definition of interference ?​

Answer» ONG>ANSWER:

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3.

Define systematic error.​

Answer» ONG>ANSWER:

an ERROR having a non-zero mean, so that its effect is not reduced when observations are averaged.

4.

What happens ti acceleration when an object moves in a circle with uniform ​

Answer»

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  • What happens ti acceleration when an object MOVES in a circle with uniform

\huge \underline \green{\sf{ Answer :- }}

  • When an object moves in a circle at a constant speed its velocity (which is a vector) is constantly changing. This constantly changing velocity means that the object is ACCELERATING (centripetal acceleration).
5.

A concave lens of focal length 20 cm forms an image 15 cm from the lens. How far is the object placed from the lens? Draw the ray diagram. 5 marks​

Answer» ONG>Answer:

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6.

Please solve numerical ​

Answer» ONG>ANSWER:

SORRY IDK.................................,.,.,.,.,,.,.,.,.,.,.,.

7.

Phase arDescribe the state of oscillation of theangleis1125​

Answer» ONG>ANSWER:

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8.

Weight of the body is 5N. How much force on the body exerted on the earth.​

Answer»

wr

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11th

Physics

Gravitation

Newton's Law of Gravitation

A body weights 500 N on the...

PHYSICS

A body weights 500N on the surface of the earth. How much would it WEIGHT half was below the surface of the earth?

MEDIUM

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ANSWER

VALUE of acceleration due to gravity decreases on going below the surface of the earth. weight(w) of a body is defined as product of mass(m) and acceleration due to gravity(g) w=mg.

The value of g below the surface of earth at a distance h is given by

g

=g(1−

R

h

)

⇒W

=W(1−

R

h

)

Given, h=

2

R

,W=500N.

W

=500(1−

2

1

)

=

2

500

=250N.

9.

1. An object of size 9 cm is placed at 20 cm in front of a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed, so that a sharp focussedimage can be obtained? Find the size and the nature of the image.​

Answer»

wer :

POSITION of object = 9cm

Distance of object = 20cm

Focal length = 15cm

Type of mirror : concave

We have to find position of object and height of image.

Focal length of concave mirror is taken negative and that of convex mirror is taken positive.

Position of image can be measured by using mirror formula.

  • 1/u + 1/v = 1/f

u denotes position of object

v denotes position of image

f denotes focal length

By SUBSTITUTING the values, we get

➝ 1/(-20) + 1/v = 1/(-15)

➝ 1/v = -1/15 + 1/20

➝ 1/v = (-4 + 3)/60

v = -60 cm

There for screen should be placed at 60cm in front of mirror in order to get SHARP focussed image.

Formula of magnification is given by

➝ m = -v/u = h'/h

  • h' = height of image
  • h = height of object

➝ -(-60)/(-15) = h'/9

➝ -4 = h'/9

h' = -36 cm

Negative sign indicates that image is REAL and inverted.

Nature : Real, inverted and enlarged

10.

3) Mirror is based on the ------------ principle of light.

Answer» ONG>ANSWER:

reflective

Explanation:

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11.

What happened to coffincient of friction ,when weight of body is doubled​​

Answer» ONG>Answer:

The coefficient of friction DEPENDS on the factors such as nature of the materials in contact, condition of the surface. It is mathematically equal to the ratio of frictional force and normal reaction. As the WEIGHT of the body is doubled, then both normal reaction and frictional force and normal reaction GETS doubles so that coefficient of friction remains constant.

12.

What is the moment of inertia of the solid sphere passing through its central axis​

Answer» ONG>Answer:

The moment of inertia of a SOLID sphere about an axis passing through its CENTRE is `0.8kgm^2`

Explanation:

i TOLD approx.Hope it HELPS

13.

What is constellation ​

Answer»

ong>Answer:

A constellation is an area on the celestial sphere in which a group of VISIBLE stars FORMS a perceived outline or pattern, typically representing an animal, mythological person or CREATURE, or an INANIMATE object. The origins of the earliest constellations likely go back to prehistory.

14.

State ohms law and write it's expressions​

Answer»

ong>Explanation:

Ohm's law STATES that if the temperature remains constant then the current passing through the CONDUCTOR will be directly proportional to the potential DIFFERENCE that is applied across the current ..

v= ir

where we represent potential difference I represent current and are represent resistance

maybe it's helpful for you ☺️

15.

Answer the attached questions .​

Answer»

ong>Answer:

The answer is :

Explanation:

1)The distance between the clouds and the hilly areas is less. MOREOVER, there are tall trees in hilly areas. So LIGHTNING STRIKES more frequently in these areas.

2) We should not carry an umbrella during lightning or thundering because the metal SHAFT of the umbrella might attract the lightening and give shock to the person holding it, And the person can be injured or even die

Hope this answer helps you

Thank you

16.

A boy revolves 2½ revolution in a circular path of radius 20 metre. find the distance and displacement covered at the end of his journey​

Answer»

ong>Explanation:

According to your question, the body moves from point A to point B thereby COMPLETING half a revolution. SINCE distance is the length of PATH covered therefore it will be equal to half the circumference i.e. 1/2 × 2pi r or pi × r. And the displacement is equal to the distance between initial and final point. Therefore it will be equal to the diameter or r+r=2r.

17.

III. Answer any two questions. 9. Explain the correction and deafest of hypermetropia.10. Explain two activities for the formation of artificial rainbow?NN020From Diagrami)Relation between it.l, A and d.Relation betweenranta and A.11) Draw the i- d curve​

Answer» ONG>Answer:

10.artificial RAINBOW

EXPLANATION:

1. angle of 42 degree

2. internally complete REFLECTION

and refraction

18.

two bodies of mass m and 9m respectively are kept at a distance of d apart. A small particle is to be placed so that the net gravitational foce on it, due to A and B is zero. Find the distance of particle from B​

Answer» ONG>ANSWER:

HOPE it HELPS you!!!!!!!!!!

19.

The expression of power ‘P’ is (a) mgh (b) p=1/2 mv2 (c) P = F x d (d) P= F x d/t​

Answer» P = (F×d)/t is the CORRECT ANSWER
20.

_____ is limiting value of average from alternative ( select and write the answer) a. mean velocityb.instantaneous velocityc.great velocityd.smaller velocity​

Answer» ONG>ANSWER:

a. MEAN velocity

Explanation:

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21.

What happens when he moves the object very close to the lens

Answer»

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Clearly, \sf\pink{moving \:the\: object\: closer \:to \:the\: lens} makes the image become both larger and further away. As you move the object closer and closer to the focal point, the image will become further and further away. As EXPECTED the image moves further away and becomes much bigger than the object.❤

22.

Explain the correction and deafest of hypermetropia​

Answer»

ong>Answer:

This defect arises either because (i) the focal length of the eye lens is too long, or (ii) the eyeball has become too small. This defect can be corrected by using a CONVEX lens of APPROPRIATE power. Eye-glasses with converging lenses PROVIDE the ADDITIONAL focussing power REQUIRED for forming the image on the retina.

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23.

A cylindrical shell 3 m long which is closed at the ends has an internal diameter 1m and wall thickness of 15 mm. Calculate the change in dimensions and change in volume if the internal pressure is 1.5 N/mm2,E = 2 x 10 N/mm2, μ= 0.3. ​

Answer»

ong>ANSWER:

helo guys its your answer

Explanation:

THIN AND THICK CYLINDERS They are, In many ... A thin cylindrical shell is 3m LONG and 1m in INTERNAL DIAMETER. ... The maximum permissible pressure = 1.44 N/mm2

24.

Derive an expression of parallelogram law of vector addiction ​

Answer» ONG>Answer:

hope this HELPS you

....

Explanation:

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25.

Natural form of Carbon:a)Coal b)Lime c)Graphite d)DiamondTchibowl 2000 BR BYROPA​

Answer» ONG>ANSWER:

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26.

What was the basis for the earliest attempts done for classification of elements? who suggested the first attemptsof this classification. ​

Answer»

stion:-

What was the basis for the earliest attempts DONE for classification of elements?

\huge \underline \green{\sf{ Answer :- }}

Basis of earliest attempts made for classification and grouping of elements is based on malleability, ductility and density and ALSO to CONSIDER whether they are metals and NONMETALS.

27.

What is second's pendulum? please tell me the correct answer ​

Answer» ONG>Answer:

it complete ONE OSCILLATION in a SECOND

28.

A boy threw a ball vertically upward with an initial velocity of 5 m/s. After how much time does the ball come back to his hand? (Take g=10 m/s2).​

Answer»

ong>Answer:

Animals which live in the forest help it GROW and regenerate in following ways:

By EATING vegetation they clear LAND for fresh growth

Animals help flowering plants in pollination and seed dispersal

Dead remains of animals make humus after DECOMPOSITION. This increases soil fertility

29.

For gaseous medium velocityof sound with changes in​

Answer» ONG>ANSWER:

मठलमजखखथतथज्ञददहदढधडयढदभ

30.

Define evaporation and conden station​

Answer» ONG>Condensation is the change from a vapor to a condensed STATE (SOLID or liquid). EVAPORATION is the change of a liquid to a gas...
31.

A long silenoid carrying a current produces a magnrtic field b along its axis if the current is doubled and the no of turns per cm is halved the new value of the along its axis will be ​

Answer» ONG>Answer: Same as before

Explanation:

Uni/l=B

B is directly proportional to current and to the NUMBER of turns.

32.

WANT PHYSICS BOOK ICSE CLASS 6 TERM 2 CHAPTER - SIMPLE MACHINE

Answer» ONG>Answer:

soory don't have that book in 6 TH I had it but now I don't

33.

Difine the following terms Reflection​

Answer»

ong>EXPLANATION:

change in DIRECTION of propagation of a WAVE that strikes the boundary between different mediums

34.

ASSERTION (A) : When a resistor of 1000 kilo-ohm is connected in parallel with a resistor of 1 ohm the equivalent resistance would be less than 1 ohmREASON (R): In parallel combination equivalent resistance is always greater than thecomponent resistors. *(1 Point)​

Answer»

ong>ANSWER:

Click here to GET an answer to your question ✍️ In the circuit diagram shown ... is of VALUE 1 ohm, what is the equivalent RESISTANCE between the POINTS A and B? ... (1) and (2) are in parallel connection.

Top answer

35.

Distance between an object and its twice enlarged real image formed by a convex lens is 60 cm. Find object distance , image distance and focal length of the lens. Also draw a ray diagram with proper scale to show the given situation. please give ray diagram also.​

Answer» ONG>Answer:

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36.

What happened to coffincient of friction ,when weight of body is doubled​

Answer»

ong>ANSWER:

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37.

State the principal of flotation please tell me the correct answer ​

Answer»

ong>Answer:

When any boat displaces a weight of water equal to its own weight, it floats. This is OFTEN called the "principle of flotation": A floating object displaces a weight of FLUID equal to its own weight. Every SHIP, SUBMARINE, and dirigible must be designed to displace a weight of fluid at least equal to its own weight.

Explanation:

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38.

What do you mean by acceleration of a body and acceleration due to gravity?​

Answer» ONG>ANSWER:

The acceleration which is gained by an object because of gravitational force is CALLED its acceleration due to gravity. Its SI UNIT is m/s2 . Acceleration due to gravity is a vector, which means it has both a magnitude and a direction. ... It has a standard value DEFINED as 9.80665 m/s2 (32.1740 ft/s2).

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39.

Which. of the following is not a vector a-displament b-velocity c-work d-acceleration ​

Answer»

ong>Answer:

VELOCITY is a VECTOR quantity because it has DIRECTION

40.

A solid cylinder rolls up an inclined plane of angle of inclination 30°. At the bottom br the inclined plane the centre of mass of the cylinder has a speed of 5 m/s.La) How far will the cylinder go up the plane?(b) How long will it take to return to the bottom?​

Answer» ONG>ANSWER:

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41.

V = 12 + 3(t+7+)find a=? at t=1s​

Answer»

ong>ANSWER:

thank for your FREE POINT

42.

PointsandP and Q have co-ordinates (123)(4,5,6) respectively find PQ​

Answer» ONG>ANSWER:

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43.

3. The string of a sonometer is plucked and it beginsto vibrate. The wave along the string is :(a) plane progressive wave(b) stationary wave(c) a longitudinal wave(d) a surface wave.​

Answer»

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  • \small \underline  {\sf{(c)  \ a \  longitudinal \ wave }}

44.

What is the cross product of 3i and 4j ?

Answer»

ong>Answer:

12 i.J

Explanation:

3x4 =12

i X j = i. j

hope it does not help

45.

What is SI unit ?If you know then only tell the answer.​

Answer»

ong>Answer:

The INTERNATIONAL System of UNITS is the MODERN form of the metric system. It is the only system of measurement with an official status in NEARLY every country in the world.

EXPLANATION:

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46.

List four characteristics of the image formed by plane mirrors.​

Answer» ES FORMED by plane MIRRORS are virtual, upright, left-right reversed, the same distance from the mirror as the OBJECT's distance, and the same SIZE as the object.
47.

What is the need to maintain the time accuracy

Answer» ONG>EXPLANATION:

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48.

Identify the odd one out platinum,gold, silver, aluminium​

Answer» ONG>ANSWER:

gold

Explanation:

golddddddddddddfddddddddddddddddfhyahydggryuyirhhuuthi65yoo

49.

a system releases 125 kilo joule of heat while 104 kilo joule of work is done on the system calculate the change in the internal energy​

Answer»

ong>Explanation:

Solution. = (-125 + 104KJ = - 21 kJ. This is the change (decrease) in the INTERNAL energy.

50.

what is the nature of the propagation of light? options are (curvilinear,rectilinear,random or circular)please tell the answer fast.​

Answer» ONG>ANSWER: RECTILINEAR

Explanation:

rectilinear