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.

The displacement-time graph of a particle is as shown below. It indicates that A. The particle starts with a certain velocity but the motion is retarded and finally the particle stops.B. Velocity of the particle is contant throught.C. Acceleration of the particle is constant throughoutD. The particle strts with a velocity, the motion is accelerated and finally the particle moves with a constant velocity

Answer» Correct Answer - A
The displacment ………….
2.

The value of integral `I = int_(0)^(pi//4) (tan^(2)x + 2sin^(2)x) dx` is:A. 2B. 0C. `-(1)/(2)`D. `(1)/(2)`

Answer» Correct Answer - D
The value ……….
`I = overset(pi//4)underset(0)int (tan^(2)x+2sin^(2)x)dx`
`= overset(pi//4)underset(0)int (sec^(2)x - 1+1-cos2x)dx`
`= overset(pi//4)underset(0)int sec^(2)x dx - overset(pi//4)underset(0)int cos 2x dx`
`=|tan x|_(0)^(pi//4) - |(sin2x)/(2)|_(0)^(pi//4)`
`=(1-0) - ((1)/(2) - 0) = (1)/(2)`
3.

Prove that  (i)^{1 / 2}+(-i)^{1 / 2}=2^{1 / 2}

Answer»

\(i^\frac12 = p + \iota q, \;p,q\, \in R\)

Then \((p + \iota q)^2 = i\)

⇒ \(p^2 - q^2 + 2\iota\, pq = i\)

\(\therefore 2 pq = 1\) & \(p^2 - q^2 = 0\)

⇒ \(p^2 = (\frac1{2p})^2 = 0\)

⇒ \(p^2 - \frac1{4p^2} = 0\)

⇒ \(p^4 - \frac14 = 0\)

⇒ \(p^2 = \sqrt{\frac14} = \pm \frac12\)

\(\therefore p = \pm \frac1{\sqrt2}\)       \((\because p \in R,\, \therefore p^2 \ge 0)\)

⇒ \(q = \frac1{2p} = \pm \frac1{2\sqrt 2}\)

\(\therefore i^\frac12 = \frac1{\sqrt 2}(1 + \frac\iota2) \; or\; i^\frac12= \frac{-1}{\sqrt2}(1+ \frac\iota2)\)

Now, 

\(i^\frac12 + (-i)^\frac12 = i^\frac12 + i^\frac12(-1)^\frac12\)    \((\because (ab)^m = a^m b^m)\)

\(= i^\frac12(1 + i) \)    \((\because \sqrt{-1} = i)\)

\(=\frac1{\sqrt2} (1 + \frac\iota 2) (1 + \iota)\)

\(= \frac1{\sqrt 2}(1 + \frac{3\iota}2 - \frac12)\)

\(= \frac1{2\sqrt 2} + \frac{3\iota}{2\sqrt2}\)

or

\(i^\frac12 + (-i)^\frac12 = i^\frac12 (1 + i)\)

\(= -\frac1{\sqrt2} (1 + \frac i2) (1 + i)\)

\(= -\frac1{\sqrt2} (\frac12 + \frac{3i}2)\)

\(= \frac{-1}{2\sqrt 2} - \frac{3i}{2\sqrt2}\)

Hence, \(i^\frac12 + (-i)^\frac12 = \frac1{2\sqrt2} + \frac{3i}{2\sqrt2}\) or \( \frac{-1}{2\sqrt2} - \frac{3i}{2\sqrt 2}\).

4.

A ball is thrown vertically upwards from the ground It crosses a point at the height of `25 m` twice at an interval of `4 secs`. The ball was thrown with the velocity of.A. `20m//s`B. `25m//s`C. `40m//s`D. `30m//s`

Answer» Correct Answer - D
A ball is ………..
`S = 25m`, u = ?
`t_(Q) = t_(1) =4s`
`a = 10m//s^(2)`
`S = ut + (1)/(2)at^(2)`
`25 = ut + (1)/(2) (-10)t^(2)`
`5t^(2) - ut+25=0`
`t_(1) +t_(2) = (u)/(5)`
`t_(1)t_(2) =5`
now `t_(Q) - t_(1) = sqrt((t_(1)+t_(2))^(2) -4t_(1)t_(2))`
`4 = sqrt(((u)/(5))^(2) - 4xx5)`
`u = 30m//s`
5.

A ball is thrown vertically upwards from the ground It crosses a point at the height of `25 m` twice at an interval of `4 secs`. The ball was thrown with the velocity of.A. `20m//sec`.B. `25m//sec`.C. `30m//sec`.D. `35m//sec`.

Answer» Correct Answer - C
Let `u` be velocity of ball with which it is thrown.
`rArru(6)+(1)/(2)a(6)^(2)=420`
`rArr u+3a=70` ....`(ii)`
`h=ut+(-(1)/(2)g t^(2))25=ut-5t^(2)`
`5t^(2)-ut+25=0` Let `t_(1),t_(2)` be its roots
`t_(1)+t_(2)=u//5,t_(1)t_(2)=5`
Given, `t_(2)-t_(1)=4sec`.
`(t_(2)-t_(1))^(2)=16`
`rArr(t_(2)+t_(1))^(2)-4t_(1)t_(2)=16`
`((u)/(5))^(2)-4xx5=16u=30m//sec.`
6.

A ________ must contain a subject and a verb. a) Word b) Sentence c) Phrase

Answer»

b) Sentence

Sentence must contain a subject and a verb.

7.

4/2 + 7/4

Answer»

\(\frac{4}{2} + \frac{7}{4}\) 

\(\frac{8 + 7}{4}\) 

\(\frac{15}{4}\)

8.

It includes a series of postures and breathing exercises practiced to achieve control of body and mind. a. Physical exercises b. Meditation c. Enjoying d. Yoga

Answer»

Correct answer is d. Yoga

9.

You can also press ________on the keyboard to create a new document

Answer»

You can also press Ctrl + N on the keyboard to create a new document

10.

_______ guides independent individuals as it helps them consider long term consequences rather than just transient feelings. a) Self-regulation b) Self – awareness c) Self-motivation

Answer»

a) Self-regulation

Self-regulation guides independent individuals as it helps them consider long term consequences rather than just transient feelings.

11.

A ________ is a software that helps you type and work with text on a computer. a) Power point b) Word processor c) Adobe

Answer»

b) Word processor

Word processor is a software that helps you type and work with text on a computer.

12.

________ is a school of Hindu philosophy reduces stress, which includes a series of postures and breathing exercises practiced to achieve control of body and mind. a) Yoga b) Meditation c) Physical exercise

Answer»

a) Yoga

Yoga is a school of Hindu philosophy reduces stress, which includes a series of postures and breathing exercises practiced to achieve control of body and mind.

13.

______is a school of Hindu philosophy reduces stress, which includes a series of postures and breathing exercises practiced to achieve control of body and mind.

Answer»

Yoga is a school of Hindu philosophy reduces stress, which includes a series of postures and breathing exercises practiced to achieve control of body and mind.

14.

Jack finished the assignment quickly and ______. A) correctly B) correct C) rapid D) hardly

Answer»

Correct option is A) correctly

15.

____ has enough natural resources so as to be practically self-sufficient in the event of war. A) Our country which B) Only when our country C) Our country D) If our country

Answer»

Correct option is C) Our country

16.

I wish he _______ to Tokyo with me last weekend. A) came B) would come C) had come D) could come

Answer»

Correct option is C) had come

17.

It includes rocks and soil found on the surface of the earth. Identify: a) lithosphere b) hydrosphere c) biosphere d) environment

Answer»

Correct answer is a) lithosphere 

18.

He thought he ________ able to find more information on British imperialism. A) will be B) would be C) is D) was

Answer»

Correct option is B) would be

19.

After Jack ________ his poem, he decided not to show it to anybody. A) finishing B) had finished C) was finishing D) has finished

Answer»

Correct option is B) had finished

20.

He is sad because he ________ some money. A) lost B) had lost C) has lost D) was lost

Answer»

Correct option is C) has lost

21.

When I arrived home at 7 o’clock, I was very surprised. Everybody ________ out. A) were B) has gone C) had gone D) is

Answer»

Correct option is C) had gone

22.

Write the meaning of excess demand and deficient demand?

Answer»

If the equilibrium level of output is more than the full employment level, it is due to the fact that the demand is more than the level of output produced at full employment level.

This situation is called excess demand. If the equilibrium level of output is less than the full employment of output, it is due to fact that demand is not enough to employ all factors of production. This situation is called deficient demand.

23.

Write the equation of GDPMP and GDPFC.

Answer»

The equations of GDP and market prices (GDPMP), and GDP at factor cost (GDPFC) are as follows:

GDPMP = C + I + G + X-M

Where, C is consumption expenditure, I is ainvestment expenditure; G is government’s consumption and investment expenditure; X is exports and M is imports.

GDPFC = GDPMP – NIT (where, NIT is net indirect taxes).

24.

Write the difference between nominal and real GDP.

Answer»
Nominal GDPReal GDP
• It is the value of GDP at current prevailing prices• It is evaluated at constant set of prices, i.e. by keeping base year’s price index
• It is not reliable• It is reliable
• It does not give real picture of economic development of a country• It gives real picture of economic development of a country

25.

If we don’ t hurry, the wedding ______ before our arrival. A) took place B) will have taken place C) takes place D) should have taken place

Answer»

Correct option is B) will have taken place

26.

State the meaning of average revenue and marginal revenue.

Answer»

Marginal revenue of a firm is defined as the increase in total revenue for a unit increase in the firm’s output. It is obtained by dividing the change in total revenue (∆TR) by change in quantity (∆q). Thus,

MR = ∆TR/∆q.

Average revenue:

We calculate average revenue, by dividing total revenue by the quantity sold. The following formula used:

AR = TR/q.

27.

Distinguish between stock and flow. Give example.

Answer»
StockFlow
• It is that quantity of economic variable which is measured at a particular point of time.• It refers to that quantity of economic variable measured over a period of time.
• Examples are capital, inventory, wealth, foreign exchange reserves, etc.• Examples are net investment, salary, national income, etc.

28.

At least half a dozen people ______ (watched without doing anything) while the man was being attacked. A) looked at B) looked on C) looked over D) looked into

Answer»

Correct option is B) looked on

29.

They never ______ the packages that they ______. A) had received / had ordered B) received / ordered C) received / had ordered D) received / has ordered

Answer»

Correct option is C) received / had ordered

30.

They can’t promise _____ the work today. A) finish B) finishing C) finished D) to finish

Answer»

Correct option is D) to finish

31.

Explain the TP, AP, and MP with examples.

Answer»

1. Total product (TP): It refers to the aggregate output produced with the help of factor inputs during a particular period of time. It is obtained by adding the marginal product contributed by each input. For example, combination of 2 factors used to produce output is added to find the total product. Suppose factor 2 is fixed at 4 units where factor 2 takes the value of 4 and so on. 

TP = ΣMP, where Σ is the summation, MP is marginal product.

2. Average product (AP): Average product is an unit of output which is produced per unit input. It is calculated by dividing the total product with the help of variable inputs. 

AP = TP/L where TP is total product and L is the variable factor input (e.g. labour)

For instance, to produce 50 units of shirts, 5 labourers are used. Here the average product of each variable input, i.e. labour is as follows:

AP = TP/L = 50/5 = 10 units.

3. Marginal product (MP): Marginal product refers to additional unit of output produced with the help of additional unit of input of labour or capital. In other words, marginal product of an input is defined as the change in output per unit of change in one of the inputs when all the other inputs are held constant. We can calculate MP with the help of following formula:

MP = TPn – TPn-1 or MP = Change in output(Δq)/Change in input(ΔL)

Where, MP is marginal product, TPn is total product of ‘n’ units and TPn-1 is total product of previous unit of output. For example, if five units of labour one used to produce 25 shirts and 6 labourers are used to produce 28 shirts the marginal product is 3 shirts (28 – 25 = 3).

32.

You’ve made a very ________ decision. Any reasonable person would have done the same thing. A) sensational B) sensed C) sensible D) sensitive E) sentimental

Answer»

Correct option is C) sensible

33.

I’m _____. There’s nothing to do. A) annoyed B) interested C) kind D) fed up

Answer»

Correct option is D) fed up

34.

There's nothing on the television tonight. A) tax B) tube C) time

Answer»

Correct option is B) tube

35.

How nominal exchange rate is different from real exchange rate?

Answer»
Nominal Exchange RateReal Exchange Rate
  • It is expressed in terms of money.
  • It is the ration of foreign prices to domestic prices.
  • It is the amount of domestic currency paid to purchase one unit of foreign currency.
  • It is expressed in terms of purchasing power of both the currencies.
  • The number of units of domestic currency one must given up to get an unit of foreign currency or the price of foreign currency in terms of domestic currency.
  • The relative price of foreign goods in terms of domestic goods.

36.

The water here is very ________. You can get across the stream on foot. A) broad B) flat C) narrow D) pure E) shallow

Answer»

Correct option is E) shallow

37.

Write the negation of the following.Nadia is intelligent and he is hard working.

Answer»

Let p : Nadia is intelligent.

q : Nadia is hard working.

The given statement is p ∧ q.

Its negation is ~(p ∧ q) ≡ ~ p ∨ ~ q

∴ The negation of the given statement is ‘Nadia is not intelligent or he is not hard-working.’

38.

Distinguish between direct and indirect taxs.

Answer»

The differences between direct and indirect taxes are as follows:

Direct TaxIndirect Tax
  • It is that where incidence of tax and its impact fall on the same person.
  • It is the tax where incidence of tax and its impact fall on different persons.
  • It falls directly on individuals and firms.
  • It falls indirectly on individuals and firms.
  • Examples for direct tax are income tax, corporation tax, wealth tax, etc.
  • Examples for indirect tax are customs duty, sales tax, etc. and now goods and services tax (GST) has been introduced.

39.

What is the difference between narrow money and broad money?

Answer»

The differences between narrow money and broad money are as follows:

Narrow MoneyBroad Money
  • It includes currency held by the public and demand deposits held by the commercial banks and savings deposits with post office.
  • It includes currency with the public, demand deposits and net time deposits of commercial banks and total deposits with post office savings.
  • Its liquidity is high and easily available for transactions.
  • It has less liquidity.
  • Symbolically narrow money is M1 and M2.
  • Symbolically broad money is M3 and M4.

40.

What are the features of simple monopoly in the commodity market?

Answer»

The features of simple monopoly in the commodity market are as follows: 

  • Existence of a single producer of a particular commodity 
  • No other commodity works as a substitute for this commodity 
  • Sufficient restrictions to prevent other firms from entering the market.
41.

Mention the methods of calculating the national income.

Answer»

There are three methods to calculate national income, viz. 

1. The product or value-added method. 

2. Expenditure method. 

3. Income method.

42.

Between net investment and capital which is a stock and which is a flow? Compare with the flow of water and a tank.

Answer»

Between net investment and capital, capital is stock and net investment is flow. The stock economic and flow economic variables can be better understood with the help of an example. Suppose a tank is being filled with water coming from a tap. 

The amount of water which is flowing into the tank from the tap per minute is the flow. The quantity of water that existed at a particular point of time is considered as stock. 

The above example can be compared with net investment and capital. Here, the capital is compared to the water that existed at a particular point of time. The capital is the stock of capital goods existed at a particular period of time. 

The net investment is compared to the flow of water into a tank. Here, the net investment is considered as the investment which is made during a year to replace the wear and tear of capital goods.

43.

________ is the excess amount over the requirement for regular working capital. A. Variable working capital B. Fixed working capital C. Reserve working capital D. Regular working capital

Answer»

C. Reserve working capital 

44.

___________ is required to meet special exigencies such as launching of extensive marketing campaigns for conducting research. A. Seasonal working capital B. Special working capital C. Reserve working capital D. Regular working capital

Answer»

B. Special working capital 

45.

The working capital required to meet the seasonal need of the business is called _______. A. Fixed working capital B. Variable working capital C. Special working capital D. Seasonal working capital

Answer»

D. Seasonal working capital

46.

Which of the following illustrates the use of a hedging (or matching) approach to financing?

Answer»

Permanent working capital financed with long-term liabilities. 

47.

DOS is a/an…… . A. Operating system B. Compiler C. Editor D. Inter preter

Answer»

Correct option is: A. Operating system

48.

LIKE % clause helps to …… table data. A. Summarize B. Sort C. Filter D. List

Answer»

Correct option is: C. Filter

49.

The state-variable filter a. Has a low-pass, high-pass, and bandpass output b. Is difficult to tune c. Has high component sensitivity d. Uses less than three op amps

Answer»

(a) Has a low-pass, high-pass, and bandpass output

50.

Cyber law is related with ? A. Hardware Protection B. Server Protection C. Internet access Protection D. Online Fraud & Crime Control

Answer»

Correct option is: D. Online Fraud & Crime Control