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.

A coil of 100 turns encloses an area of 100cm^2. It is placed at an angle of 70° with a magnetic field of 0.1Wbm^-2. What is the magnetic flux through the coil? If the magnetic field is reduced to zero in 10^-3s, what emf is induced in the coil?1

Answer»

ANSWER:

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Discussion
2.

The expression for downward acceleration of a body on an inclined plane of coefficient of friiction mand q inclination is1 )g(sinq+m) 2)gsin theta(1+m) 3) g(sin theta+mcos theta) 4) g(sin theta -mcos theta)​

Answer»

EXPLANATION:

ANSWER: G(SIN THETA - mcos Theta)

Discussion
3.

A gas expands isothermally to double its volume. The rms speed of its molecules will be(A) Increased(B) Decreased(C) Remains constant(D)First increases and then decreases​

Answer»

ANSWER:

The answer is a OPTION A
Discussion
4.

The average thermal energy of oxygen at a temperature of 27° C is(A) 6.2 X 10-21 J(B) 4.5 x 10-21 J(C) 3.5 x 10-21 J(D)//1.2 x 10-21 J​

Answer»

ANSWER:

The THERMAL energy of OXYGEN at a temperature is 3.5/ 10–21 J
Discussion
5.

Le has u4.26 An aircraft is flying at a height of 3400 m above the ground. If the angle subtended ata ground observation point by the aircraft positions 10,0 s apart is 30', what is thespeed of the aircraft?​

Answer»

ANSWER:

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Discussion
6.

If y is the ratio of the two molar specific heats of a gas, the number of degrees of freedom is given by(A)Y-12(B)12(C)7-1y(D)​

Answer»

ANSWER:

The answer is a OPTION B
Discussion
7.

->If the resultant of P and Q makes an angle 0, with P and O2 with Q, then(A) 0,Q(B) 0.

Answer»

ANSWER:

The answer is a OPTION B
Discussion
8.

Is ē - itŷtQ = 2 – 9 – kthen P - Q is(A) –î +29+ 2(B) î – 2ġ – 2(C) î + 29 + 2(D) None​

Answer»

ANSWER:

too

Explanation:

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Discussion
9.

It A force acts for Olseconds ona body of mass 12kginitially al rest. The force thene ceases toact and the body moves though 2m in thenext one second find the magnitude of theforce.​

Answer»

ANSWER:

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Discussion
10.

The rms speed of a sample of a gas at 27°C and 1 atmosphere pressure is 200 m/s. If the temperature is increased by 10the pressure is made 2 atmospheres the new rms speed is close to(A) 140 m/s(B) 320 m/s(C) 284 m/s(D) 230 m/s​

Answer»

ANSWER:

The answer is a OPTION B
Discussion
11.

Derive the expression of magnetic ( B) at any point on the Axis of a circular current caring conductor with( N) number of turn​

Answer»

EXPLANATION:

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Discussion
12.

The resultant of two forces whose magnitudes arein the ratio 3:5 is 28 N. If the angle of theirinclination is 60°, then the magnitude of each forceis(A) 8 N, 6N(B) 2 N, 2N(C) 10 N, 16 N(D) 12 N, 20 N​

Answer»

ANSWER:

CV is the CURRET answer
Discussion
13.

A physical quantity P is related to four other physical quantities a, b, c and d as P - a³b²c^1/2/d. The percentageerror in the measurement of a, b, c and d are 1%, 2%, 2% and 1% respectively. Find maximum percentage error in quantity P.*WITH PROPER SOLUTION PLEASE*​

Answer»

Answer:

REFER the PICTURE for the answer

Explanation:

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Discussion
14.

12. A vessel is filled with a gas at a pressureof 76 cm of Hg at a certain temperature.The mass of gas is increased by 22% byintroducing more gas in the vessel at sametemperature. The resultant pressure of gasis (cm of Hg)​

Answer»

Answer:

A vessel is filled with a gas at a pressure of 76 cm of mercury at a CERTAIN temperature. The mass of the gas is increased by 50% by introducing more gas in the vessel at the same temperature. Find the resultant pressure of the gas.

Explanation:

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Discussion
15.

A strong current of water turns the blades of a water turbine because it possessesa) potential energyb) kinetic energyc) both potential and kineticd) none of these​

Answer»

Answer:

Strong current of WATER TURNED the BLADES of a TURBINE because it possesses KINETIC ENERGY.
Discussion
16.

1)if earth is called food-food is called tree,treecalled water, water is called world, whichof the following grows apple1 Earth2) food3)water4)world​

Answer»

ANSWER:

WATER is WRITE answer because TREE CALLED water
Discussion
17.

Which of the following is correct?(A) Vau < Vmp(B) Vmp < V.Vrms(C) V > Vrms(D) V=Vmp​

Answer»

ANSWER:

The answer is a OPTION B

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Discussion
18.

If the K.E of an object is 16 joules when its speed is 4 meter per second then the mass of the object is:B. 2.0 kgA. 1.00 kgD. 19.6 kgC.4.9 kg​

Answer»

ANSWER:

Wohwisbeis eieb3idqs5zrc6b6ggcy tttc6c7 ycggxbjyohct fyccbjyrsxcvhutwscbjiud hfjbfbhcbbfubbrbhuxhbd Hbgvvccctyhcxdrhyjgygvgcxdryuie54eddc bhhhgvbbjjii the yyhhhhhhh
Discussion
19.

Choose the correct statement A atomic mass number is the sum of number of protons and number of neutrons B atomic number is the number of electrons of the neutral atom C sum of number of electrons and number of protons is equal to number of neutron D a and b​

Answer»

ANSWER:

A is the CORRECT option

Explanation:
Discussion
20.

The resultant of two forces at right angles is13N. The minimum resultant of the two forces is 7N. The forces are(A) 20 N, 6N(B) 10 N, 20 N(C) 5N 12 N(D) 8N, 15 N​

Answer»

Answer:

OPTION (C) is the CORRECT answer

Explanation:

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Discussion
21.

Five molecules of a gas have speeds 1, 2, 3, 4, and 5km/sec. The ratio of their rms speed and average speed is(A) 11:3(B) 3:11(C) 1:2(D) 13:1​

Answer»

ANSWER:

The answer is a OPTION C
Discussion
22.

A student drops a small black sphere alongside a vertical scale marked in centimetres.A number of flash photographs of the sphere are taken at 0.1sintervals, as shown inFigure 1.18. The first photograph is taken with the sphere at the top at time t = 0s.b Determine the constant speed reached by the sphere.Ans:240 m/sс Determine the distance that the sphere has fallen when t = 0.8s.please tell answer of c part​

Answer»

ANSWER:

don't know

Explanation:

so

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Discussion
23.

Given two vectors A-323 - 3k and B - 41 - 2} + 6k. The angle made by (A + B) with the X-axis is(A) 30°(B) 450(C) 60°(D) 90°​

Answer»

ANSWER:

The answer is a OPTION C

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Discussion
24.

Subtraction of vectors obeys which law associative law commutative law distributive law or all of the aboveplz answer first answer will be marked​

Answer»

Answer:

No, subtraction never obeys the COMMUTATIVE law, not EVEN subtraction of scalars. For subtraction, we have the relation

x—y=−(y−x).

Note the minus sign in FRONT, this is what spoils the commutative law for subtraction.

Addition does obey the commutative law, for scalars, VECTORS, and members of all kinds of infinite dimensional spaces, e.g. Banach Spaces, Hilbert spaces, etc.

x+y=y+x.

Explanation:

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Discussion
25.

Duration: 3:00.00mg Len, 1.22:37Question No. 111As insect moves 3 cm towards north, 4m towards east and then 5m verticallyup. Then its resultant displacement is(A) 12 m(B) 10 m(C)52 m(D) NoneABС​

Answer»

ANSWER:

have

Explanation:

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Discussion
26.

4) which one is odd amongst the following in terms of kind of energya) water stored on roof in a tank b) a compressed spring of a toy gunc) a stretched bow and arrow systemd) a speeding car​

Answer»

ANSWER:

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Discussion
27.

Two ships A and B are 4 km apart. A isdue west of B. If A moves with uniformvelocity of 6 kmh-' due south, calculate themagnitude of the velocity of A relative toB. Full solution​

Answer»

ANSWER:

KILOMETRES have a BI CENTRE
Discussion
28.

How does Kangaroo rat cope with the North American desert environment?(A) It can concentrate it's urine(B) Water requirement is met by internal oxidation of stored fat(C) Minimum water is used to remove excretory products(D) All of the above

Answer»

EXPLANATION:

ANSWER (a) It can CONCENTRATE it's URINE

Discussion
29.

Mass of 1 kg is tied to one end of the string 0.5m long whirled in a horizontal circle the other end of the string being fixed. the breaking tention in tthe string is 50 N. find the greatest angular speed that can be given to the mass.​

Answer»

Answer:

the answer is 13 N MASS OK BRO
Discussion
30.

The resultant of two vector A & B isC. If direction of B is reversed theresultant is D. Then which of thefollowing is true?(A) C2 + D2 = A² + B2(B) A2 + C2 = B2 + D2(C) C2 + D2 = 2(A? + B2)(DC2-D2 = A + B2​

Answer»

EXPLANATION:

the CORRECT ANSWER is C
Discussion
31.

Whenever an object moves under the influence of force of gravity alone it is called ........ *मुक्तिवेग / escape velocityस्थितीज उर्जा / potential energyगुरुत्व स्थिरांक / gravitational constantमुक्तपतन / free fall

Answer»

ANSWER:

is CALLED FREE FALL ,..........
Discussion
32.

48. Toe region isa. First region of the L-D curveb. Middle region of load deformation curvec. End region of load deformation curved. None of these​

Answer»

ANSWER:

(d).NONE of these.

Hope it's HELPFUL.
Discussion
33.

A piece of stell has a volume of 12cm3 and a mass of 96kg what is its density ina. g/cm3b. kg/m3

Answer»

Answer:

800 KG / m3

8000 G/ CM3

HOPE it HELPS you
Discussion
34.

The resultant of two forces 2 N and 3 Nis19 N then the angle between theforces(A) 300(B) 45°(C) 60°(D) 40°​

Answer»

ANSWER:

300 CORRECT answer

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Discussion
35.

Two terminals of a cell are marked as X (+6V) and Y(-6V). The cell is connected to a wire of resistance (2ohm). calculate the work done in carrying a charge of 2C fromi) X to Y along the wire Rii) Y to X through the cell​

Answer»

i) X to y -

work DONE = v x q

so WORKDONE in moving 2c from x to y = 6 x 2 = 12

ii) y to x -

its inside the cell , so the current is flowing from -6 to +6

potential difference = -6-(+6) = -12

workdone = v x q = -12 x 2 = -24

this maybe correct , although i aint sure!!

if there's any correction please comment!! i will rectify!!

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Discussion
36.

If the angle between two vectors of equalmagnitude P is 0, the magnitude of thedifference of the vectors is(A)2P con la(B)2P sin(C)AP cos(D)P sin​

Answer»

<P>EXPLANATION:

COS

(D)

P sin✔️✔️✔️✔️✔️
Discussion
37.

IpleanChoice questions1) Light travels from one medium atangle of incidence 45° to anothermedim making an angle of refract30°, the bodio of refractive indiceshalf to madia is, [ ]LA) 1:2(B) weil(c) 1:2(D) 2:1​

Answer»

ANSWER:

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Discussion
38.

If the resultant of P and Q makes an angle 0, with P and 0, with Q, then(A) 0, 0, if P>Q(B) 0, 0, if P«Q(C) 0,

Answer»

ANSWER:

The answer is a OPTION C

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Discussion
39.

3. A body of mass 1 kg is moving with a uniformspeed of 1 m/s in a circular path of radius 1 m.The external force acting on the body is(b) 2.4 N(c) 3.1 N(a) 1 NMOTION(d) 0​

Answer»

EXPLANATION:

CENTRIPETAL force=mω

2

r=5×2×2×1= 20N

HOPE IT HELPS YOU

Discussion
40.

A vector Q has a magnitude of 8 is added to the vector P which lies along the X - axis. The resultant of these two vectors is a thirdvector R which lies along Y-axis and has a magnitude twice that of P. The magnitude of P isnagnitude(A) 6/5(B) 8/5(C) 12/5(D) 16/5​

Answer»

ANSWER:

NONE of the above OPITIONS are CORRECT

  1. the correct answer is 8/root5
Discussion
41.

10) When the angle between the force and the displacement is acute then the work done will bea) positiveb) negativec) neutrald) all of these​

Answer»

ANSWER:

it càn be all of these

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Discussion
42.

Nikita Tirkayod: 2212) Thefind23ratio of amplitudestheratioof twowaves: Londnessand in) pitenof their​

Answer»

EXPLANATION:

व्हाट इज द क्वेश्चन आई कांट अंडरस्टैंड द क्वेश्चन

Discussion
43.

2uF24HH34uFHHH04 माइक्रो फैरडO 7/12 माइक्रो फैरडO5 माइक्रो फैरड0 12/7 माइक्रो फैरड​

Answer»

ANSWER:

I do not understand or u R just GIVING free POINTS,???
Discussion
44.

21The average kinetic energy of Hydrogen and oxygen are found to be 10 x 10 Jand15 x 10-21 J respectively. If the temperature of hydrogen is -23°C, The temperature of oxygen is(A) 375°C(B) 102°C(C) 575 K(D) 333°C​

Answer»

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Discussion
45.

What is density of substance of (i) mass 100g and volume 10cm3(ii) volume 3m3 and mass 9kg

Answer»

\huge{\mathtt{\underline{\blue{Answer}}}}

1.) Mass = 100GM

VOLUME = 10cm³

DENSITY = mass/volume

= 100/10

= 10 cm³

2.) Mass = 9KG = 9000gm

volume = 3m³ = 3000000cm³

Density = mass/volume

= 9000/3000000

= 0.003cm³
Discussion
46.

Can a body remain in rest when forces are acting on it if yes give reason if no give reasonplease answer fast its urgent I will give five stars and heart and also be honest answer but you have to be fast​

Answer»

Answer:

No, if The Net Force Acting On A Body Be ZERO, then the body won't NECESSARILY be in the rest POSITION.
Discussion
47.

8) Name the type of energy possessed by the flowing water in a river.a) Kinetic energyb) potential energyc) heat energyd)sound energy​

Answer»

EXPLANATION:

KINETIC ENERGY.......
Discussion
48.

7) How many watts are present in 1 horse power?a) 746 wattsb) 786 wattsc) 980 wattsd) 756 watts​

Answer»

ANSWER:

EXPLANATION:

ONE HORSE POWER = 746 WATTS
Discussion
49.

. A block of mass 5kg is lying on arough horizontal surface. Thecoefficient of static and kineticfriction are 0.3 and 0.1 andg=10ms-2. The frictional force onthe block is1) 25N2) 15N3) 10 N4) zero.please help me solve this please​

Answer»

EXPLANATION:

option B is correct ANSWER MATE

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Discussion
50.

Given two vectorsĀ = î – 29 – 3kandB = 4î – 29 +6k The angle made by(A + B) with the X-axis is(A) 300(B) 450(C) 600(D) 90°​

Answer»

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Discussion