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.

Derive the expression for binding energy of satellite orbiting at height 'h' round the earth​

Answer»

Explanation:

To Find: Binding energies =? r1 = R + H1 = 6400 + 600 = 7000 km = = 7 x 106 m; ANS: Binding energy of satellite ORBITING very close to the earth's SURFACE is 6.25 x 1010 J and binding energy of satellite orbiting at height 600 km from the surface of the earth is 5.72 x 1010 J.

MARK IT BRAINLIEST
Discussion
2.

SI unit of magnetic dip​

Answer»

ANSWER WB*m

Explanation:
Discussion
3.

An electrical appliance is rated1500 W, 250 V. This appliance is connected to 25 V mains. What is the current drawn?​

Answer»

ANSWER:

in this QUESTION ,V MEANS VOLTS
Discussion
4.

one hollow and one solid cylinder of the same radius are rolling down an inclined plane which one will reach first to the end of the inclined plane?​

Answer»

ANSWER:

SOLID CYLINDER as it's WEIGHT is LARGER
Discussion
5.

Proof work energy theorem​

Answer»

Answer:

WORK ENERGY THEOREM STATES that the change in kinetic energy of an object is EQUAL to the net work done on it by the net force.
Discussion
6.

Si unit of magnetic declination​

Answer»

ANSWER:

IDK i am sorry

Explanation:
Discussion
7.

ring 1 is of mass M and radius 2R.another ring(ring 2) is of mass 2M and radius R. also distance between centres of both the ring is 2R. a very small mass 'm' is kept at centre of ring 1. given that m

Answer»

ANSWER:

jojg huh gyh gyu ffu fgu hjh fti kjx buff hyui

Explanation:

oddf dif CD dusqwoz DIS XIW xxj

Discussion
8.

SI unit of magnetic decilnation​

Answer»

ITNA padke KYA KARGA...........?
Discussion
9.

What happened when higher current is passed from the filament of bulp​

Answer»

Answer:

If the higher corrent is PASSED then the filament will melt down and as the CIRCUIT is BROKEN the bulb will be stop glowing.

HOPE it helpes.......

mark BRAINLIEST
Discussion
10.

What is SI unit of magnetic decilnation​

Answer»

Explanation:

The magnetic declination at any particular place can be measured directly by reference to the celestial poles—the points in the heavens AROUND which the STARS appear to REVOLVE, which mark the DIRECTION of true north and true south.
Discussion
11.

એક સુરેખ સળિયાની ચુંબકીય મોમેન્ટ m છે. તેનો અર્ધવર્તુળાકારે વાળી દેતાં તેની ચુંબકીય મોમેન્ટ.......... થશે.(A)2m/π(B) m(C) 2πm(D) m/π​

Answer»

ANSWER:

(B) 2m/π

Explanation:

Discussion
12.

Plz answer me fast ........​

Answer»

Explanation:

b) Infrared RAYS..

MARK AS BRAINLIEST and FOLLOW ME ALSO please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please............
Discussion
13.

A 10 ohm resistance is connected with an electric cell. Now, this resistance is replaced by a 20ohmresistance. The potential difference between two poles of the cell....(a) will increase(b) will decrease(c) will remain the same(d) will get discharged immediately

Answer»

ANSWER:

Will INCREASE is the answer of this QUESTION

Discussion
14.

Dimensional analysis of critical velocity​

Answer»

M°L¹T⁻¹

SI UNIT is ms⁻¹
Discussion
15.

Five resistors, each 3 ohm areconnected as shown in the figurebelow, resistance between X and Y is what? ​

Answer»

Answer:

1/R' = 1/6 + 1/3

1/R' = 1/2

R' = 2 OHM

SO TOTAL RESISTANCE = 2+3+3 = 9 ohm

MARKS AS BRAINLIST PLS PLS PLS.
Discussion
16.

Water is optical _______ than Benzeneplease answer fastly....​

Answer»

Answer:

Water is optically RARER than Benzene.

Explanation:

  • Refractive INDEX of water is 1.33
  • While refractive index of Benzene is 1.50
  • Hence water having smaller refractive index than Benzene is optically rarer medium than Benzene.

Hope it helps you and if it does PLEASE mark as BRAINLIEST.
Discussion
17.

_______ current lines is required for air conditioners..??please answer fastly...no spam...​

Answer»

EXPLANATION:

SINGLE PHASE CONNECTION ..........
Discussion
18.

Size of the image formed by a convex mirror is always diminished.Why?​

Answer»

Answer:

IMAGE FORMED BY CONVEX MIRROR IS ALWAYS DIMINISHED BECAUSE IN CONVEX MIRROR IMAGE IS FORMED VERY FAR FROM MIRROR....

PLEASE MARK ME BRANLIEST..
Discussion
19.

Does earth offer resistance when current flows into it ?

Answer»

ANSWER:

YES, EARTH OFFER RESISTANCE WHEN CURRENT FLOWS INTO IT..

MARK ME BRANLIEST
Discussion
20.

What is the full form of CNG...??please answer fastly....​

Answer»

ANSWER:

CNG stands for Compressed Natural GAS
Discussion
21.

if water of mass 60g and temperature 60°C is mixed with water of mass 60g and temperature 40°C, what will be the maximum temperature of the mixture? ​

Answer»

Answer:

20 DEGREE CENTIGRATE

Discussion
22.

What is the difference between centre of mass and centre of gravity?? ​

Answer»

Answer:

HOLA!

CENTRE of mass is the POINT at which the DISTRIBUTION of mass is equal in all DIRECTIONS, and does not depend on GRAVITATIONAL field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field.

hope it helps dear..
Discussion
23.

The axis of earth's magnetic field is inclined at an angle of about how much with the geographical axis?​

Answer»

ANSWER:

the axis of earth MAGNETIC field is incline at an angle of abound 15 DEGREE with geographical access.

Explanation:

MARK as BRAINLIEST ❤️
Discussion
24.

What is horizantal component ​

Answer»

HOPE it HELPS you..........
Discussion
25.

State the law of conservation of energy with examples ​

Answer»

ANSWER:

ENERGY can NEITHER be CREATED nor be destroyed in a REACTION
Discussion
26.

Calculate the number of image formed if the angle between two mirrors a.40°. b.60°​

Answer»

Answer:

a) 8 b) 5

Explanation:

divide 360 by the given angle and subtract 1

Discussion
27.

What is the casues of Myopia?​

Answer»

Answer:

Myopia (also called nearsightedness) is the most common cause of impaired vision in people under age 40. In RECENT years, its prevalence is growing at an alarming rate.

Globally, research suggests that in the year 2000, roughly 25 percent of the world's population was nearsighted but by the year 2050, it's expected that roughly half the people on the PLANET will be myopic.

Explanation:

What causes myopia?

Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. This causes LIGHT rays to focus at a point in front of the retina, rather than directly on its surface.

Nearsightedness can also be caused by the cornea and/or lens being too curved for the length of the eyeball. In some cases, myopia occurs due to a combination of these factors.

Myopia typically begins in childhood, and you may have a higher risk if your parents are nearsighted. In most cases, nearsightedness STABILIZES in early adulthood but sometimes it continues to progress with age.....

hope this answer will help u thank u......
Discussion
28.

What is horizantal component of earth magnetic field at a place​

Answer»

EXPLANATION:

It is the component of the EARTH's total MAGNETIC field in the horizontal direction in the magnetic field meridian.

Then comes angle of dip which is the angle between the two mentioned above.

Hope it helps you!

CHEERS!!!

Discussion
29.

if three bulbs of same power are connected in series and parallel then which bulbs will glow brighter or dimmer​

Answer»

Answer:

The BULBS connected in Parallel will glow brighter and the bulbs cnnected in SERIES will glow dimmer.This is because in Parallel every bulbs GET equal voltage and power but in series it is not.

follow me and Mark it as BRAINLIEST.
Discussion
30.

For isothermal process, the walls of the container are​

Answer»

Answer:

For an isothermal change the walls of the container must be perfectly conducting to allow free exchange of HEAT between the GAS and its surroundings. ... Let the gas expands to volume V2, when the PRESSURE reduces to P2 and temperature remains constant at T. At any INSTANT during expansion let the pressure of the gas be P.

mark me as brainliest
Discussion
31.

In the given figure, if the role of friction is negligible, find the acceleration of themass M2.​

Answer»

EXPLANATION:

F= ma

a= F/m

a=m1/m2

hope it is USEFUL
Discussion
32.

14. A simple wave motion is represented by​

Answer»

ANSWER:

A SIMPLE WAVE MOTION is REPRESENTED by y=5(sin4πt+√3 cos4πt).
Discussion
33.

Images formed by spherical lens.​

Answer»

ANSWER:

  1. REAL and INVERTED
  2. VIRTUAL and ERECT.
Discussion
34.

11, | ISTOC 01 II Lolie II LU LIIQ PHIM VUI VÀ SIUU DIEU |12. If A is a vector with magnitude A, then the unit vector â in the direction of vector A​

Answer»

ANSWER:xxfkkffk

Dddd

D

D

Explanation:

Xddldododdood

X

X

D

D

D

D

D

Dr

D

D

D

D
Discussion
35.

Thheta =3tsquare+2 find angular velocity at 3 second in 3 second.​

Answer»

ANSWER:

bdjdifbd dnxkxnsjsks

snskzkzosjan

jxixi
Discussion
36.

What is meant by oxidation reaction ?​

Answer»

ANSWER:

The REACTION in which OXYGEN is added to a substance is called OXIDATION
Discussion
37.

Delta Q(A to B) Workdone (A to B) ​

Answer»

ANSWER:

I don't KNOW

Explanation:

I don't know

Discussion
38.

What type of circuit we should prefer for good flow of electricity at low heat production​

Answer»

Answer:

We should PREFER for PARALLEL CIRCUIT

Explanation:

As in parallel circuit, the overall RESISTANCE is lower than overall resistance of series circuit. So, electricity will flow more in parallel circuit with low HEAT PRODUCTION than the series circuit

So, it is also use in domestic purposes
Discussion
39.

A)Identify A,B,C,Db)state two uses of Ac)Write any two ways in which strength of A increased​

Answer»

ANSWER:

A= Coil

B= SOFT IRON armature

C= Gong

D= Hammer

E= BATTERY
Discussion
40.

Anyone derive a bernaulii theoremplzzz copy paste n Krna ​

Answer»

EXPLANATION:

BERNOULLI Principle: In fluid DYNAMICS, Bernoulli's principle states that for an inviscid FLOW, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's POTENTIAL energy.
Discussion
41.

How to pass physics exam​

Answer»

Answer:

Firstly, don't think about results.

  • READ all the notes
  • Read the all SUMMARY of chapter.
  • Solve all the problems of text BOOK.
Discussion
42.

How to become more intelligent than toppers ​

Answer»

ANSWER:

By BECOMING topper¯\_(ツ)_/¯

Mark as BRAINLIEST ✨✨
Discussion
43.

* Why does obtaining the image of the sun on apaper with the help of a concave mirror burn thepaper?​

Answer»

Answer:

Because concave mirror FOCUS the sunlight at one particular point . At that particular point , amount of sunlight is converged and HEAT is TRAPPED at that point . This is because , it burn the PAPER on which the image is focussed .
Discussion
44.

What is meant by converging of light rays?​

Answer»

\huge\bold\red{HELLO!}

ItzHarsh★

RAYS of light, which, proceeding from DIFFERENT points of an object, tend TOWARD a single point Is valled CONVERGING Rays.
Discussion
45.

A)State the activity shown in the given figureb)Name the sciencetist who invented it?​

Answer»

Answer:

a) magnetic FIELD AROUND a current CARRYING wire

b) H.C Oersted, a Danish physicist first invented it
Discussion
46.

a tennis ball is thrown up and reaches at a height of 6.05m before coming down what is it's initial velocity how much tot time will take to come down (assume g=10m/s)​

Answer»

Answer:

Initial velocity of the ball is 11 m/s and TIME  taken to COME down is 1.1 s

EXPLANATION:

HEIGHT reached by the ball is S= 6.05 m

Final velocity is zero

From the equation of motion

v^2 = u^2+2gS\\0=u^2+2\times -10 \times 6.05\\u=\sqrt{121} \\u=11 m/s

Initial velocity of the ball is 11 m/s

Time  taken to come down is

v =u+at\\11= 10 \times t\\t= 1.1 s

Time  taken to come down is 1.1 s
Discussion
47.

The activity of a radioactive element drops to 1/16th of its initial value in 32 years find the mean life of the sample(1 mark type question)

Answer»

\large{\sf\underline{ \red{\underline{Question }}}}:- \: \\

→ The activity of a RADIOACTIVE ELEMENTS drops to \dfrac{1}{16}th of its initial value in 32 years .find the mean LIFE of the sample .

\large\sf\underline{\underline{Answer }}:- \: \\ \implies \sf mean \: life (\tau) = 11.544 \: \\ \\ \large\sf\underline{ \green{\underline{To \: Find }}}:- \\ \to \sf mean \: life \: of \: the \: sample \\ \\ \large\sf\underline{ \pink{\underline{Explanation }}}:- \:

GIVEN that :

  • Activity of element \dfrac{1}{16}

  • time (t) = 32 years

We know that ,

→ Activity of a radioactive substances at any time "t" is -

\implies \sf \red{ N = N_0 \: }{e}^{ - \lambda \:t} \: \: \: \\ \\ \implies \sf \frac{N}{N_0} = {e}^{ - \lambda \: t} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \because \boxed{ \sf\frac{N}{N_0} = \frac{1}{16} } \\ \\ \implies \sf \: \frac{1}{16} = {e}^{ - \lambda \: t} \\ \\ \implies \sf \: {e}^{ 32\lambda \: } = 16 \\ \\ \sf \: taking \: \log() \: on \: both \: sides \: \\ \\ \implies \sf \log( {e}^{32 \lambda} ) = \log(16) \\ \\ \: \: \: \: \: \because \boxed{ \sf \: \log( {m}^{n} ) = n \log m} \\ \\ \implies \sf \: 32 \lambda \log e = \log( {2}^{4} ) \\ \\ \because \boxed{ \sf \log e = 1} \\ \\ \implies \: \: 32 \lambda = 4 \log 2 \\ \\ \implies \boxed{ \sf \: \lambda = \frac{ \log 2}{8} \: }

We know that ,

\to \sf \boxed{ \sf mean \: life \:(\tau) = \frac{ 1}{ \lambda} } \\ \\ \to \sf \tau= \frac{ 1}{ \frac{ \log 2}{8} } \\ \\ \to { \sf \tau = \frac{8}{ \log 2} \: } \: \: \because \boxed{ \sf \log 2 = 0.693} \\ \\ \to \sf \: \tau= \frac{8}{0.693} \\ \\ \to \boxed{ \sf \tau= 11.544 \: }
Discussion
48.

Why do electrons revolve around the nucleus?Physics Class 11 questionPLEASE DO NOT ENTER THE CHEM ANSWERS.Thanks and RegardsME

Answer»

ANSWER:

I rad =360° or 2Π. so it moves to STABLE the position of NUCLEUS
Discussion
49.

an object is thrown by a speed equal to 3 times of Escape speed of the earth from the surface of earth. what will be the speed beyond the gravitational field of the earth? ignore the presence of Sun and other planet​

Answer»

Answer:

3×2.66×10¹³

Explanation:

HOPE it HELPS
Discussion
50.

Concave mirror are used in solas devices ​

Answer»

Answer:

CONCAVE mirrors are used in SOLAR furnaces, because concave mirrors are the only type of mirror that reflects light in TOWARD a single focal point. A flat mirror does not have a focal point. It does regular REFLECTION off all of its points. ... The light will reflect up and away from the focal point of a convex mirror.
Discussion