Explore topic-wise InterviewSolutions in Current Affairs.

Correct answer is (b) courtship

Correct answer is (c) semicircle

Correct answer is (b) delivered

Correct answer is (b) overcook

Correct answer is (d) militaries

Correct answer is (a) underestimate

Correct answer is (a) teleseries

Correct answer is (a) encase

Correct answer is (d) debug

Correct answer is (c) defiance

Correct answer is (a) decontamin

(b) indifference

(b) unimportant

Correct answer is (b) poetic

Correct answer is (d) forecast

Correct answer is (c) ultrasound

With doctors, those with life-affecting diseases can prolong their life, which can lead to reproduction. The gene for the disease would then be passed on from generation to generation. If doctors weren't here to help them, they would most likely die off. Only the healthy would survive and reproduce.
Why doctor is important in our life?
A doctor is a person with extensive knowledge in the domain of medical science, who applies and dedicates his knowledge to identify the medical problem faced by the patient and then uses his skill to prevent or cure it.

How do doctors help us?
They give people medicine and other kinds of treatment. They also give advice about diet, exercise, and sleep. Doctors use science to figure out what is making people sick. Doctors examine people, listen to them describe their health problems, and do tests to see what is wrong.

What is the purpose of a doctor?
A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a professional who practices medicine, which is concerned with promoting, maintaining, or restoring health through the study, diagnosis, prognosis and treatment of disease, injury, and other physical

Who is a doctor in simple words?
A physician or medical doctor is a person who uses medicine to treat illness and injuries to improve a patient's health. In most countries, the basic medical degree qualifies a person to treat patients and prescribe appropriate treatment, including drugs. A physician may also do the simplest kinds of surgery.

(C) Synecdoche

Correct option is C) use

Z = (2 + 3i)(1 + 2i)

= 2 + 4i + 3i + 6i²

= 2 – 6 + 7i    \((\because i^2 =-1)\)

= –4 + 7i

Now, Z^–1 \(=\frac{1}{z}=\frac{1}{-4+7i}\)

\(=\frac{1}{-4+7i}\times \frac{4+7i}{4+7i}\)

\(=\frac{4+7i}{49i^2-16}\)

\(=\frac{4+7i}{-49-16}\)         \((\because i^2=-1)\)

\(=\frac{-1}{65}(4+7i)\)

(C)  Carry on

Answer: forcefully, forcibly, powerfully, overwhelmingly, destructively, furiously, strongly, fiercely, abruptly and mercilessly.

\(\because\) a + ar = 15

⇒ a(1 + r) = 15

⇒ a \(=\frac{15}{1+r}\)

And sum of infinite term = 27 (Given)

\(\therefore \frac{a}{1-r}=27\)

\(\Rightarrow \frac{15}{(1+r)(1-r)}=27\)

\(\Rightarrow 1-r^2 = \frac{15}{27}=\frac{5}{9}\)

\(\Rightarrow r^2=1-\frac{5}{9}=\frac{4}{9}\)

\(\Rightarrow r=\pm\frac{2}{3}\)

\(\Rightarrow \) But r \(\ne \frac{-2}{3}\)  \((\because \) all terms of g.p are positive)

\(\therefore\) common ratio \(=r=\frac{2}{3}\)

Madhuri was filled with surprise when her name was’ called out.

(B)  isn’t it?

He was suspected of having stolen the book. 

(B)  mistake

Surface xy³z² = 4

∴ Normal vector to given surface is ∇(xy³z²)

 \(=\hat i\frac{\partial}{\partial\mathrm x}\mathrm xy^3z^2+\hat j \frac{\partial}{\partial y}\mathrm x y^3z^2+\hat k\frac{\partial}{\partial z}(\mathrm xy^3z^2)\)

= y³z²\(\hat i\) + 3xy²z²\(\hat j\) + 2xy³z\(\hat k\)

Normal vector to given surface at (1, 1, 2) is 

\(\mathrm{\left[\nabla(xy^3z^2)\right]}_{(1, 1, 2)}\) = 4\(\hat i\) + 12\(\hat j\) + 8\(\hat k\)    (By putting x = 1, y = 1, z = 2)

So, the vector normal to surface xy³z² = 4 is 4\(\hat i\) + 12\(\hat j\) + 8\(\hat k\).

Correct option is (C) -10/7

BSEB has announced BSEB 12th result 2020 today, on biharboardonline.bihar.gov.in or can be checked from the direct link on this page. 

• The exam has been topped by Sakshi Kumari in Arts, Kausar Fathma and Sudhanshu Narayan in commerce, and Neha Kumari in Science. 
• To check the Bihar Board Inter result 2020, candidates need roll code and roll number. No hard copy of the scorecard/mark sheet is sent to the candidates via post. 
• BSEB Bihar 12 / inter result is announced for arts, commerce, and science stream. 
• Check more details on Bihar Board 12th result 2020 like release date, process to check result, statistics, etc from this page.
• Check Bihar Board 12th Result 2020: 
• Click here to check Bihar board 12th result 2020.
• http://onlinebseb.in

E = P x t

E = Power x time

E = 60 x 30

60×30 = 1,800 J

E = P x t

E = Power x time

E = 60 x 30

E = 1800 Joule.

LHL = a + 3

f(0) = b

RHL = lim_(h →0)((1 + 3h)^1/3 - 1)/h) = 1

∴ a = - 2

b = 1

∴ a + 2b = 0

The energy of the emitted photoelectrons are directly proportional to the frequency of the incident radiation.

f(x) = x^4/3, x ∈ [-1, 1]

\(\because\) f(x) is continuous when x ∈[-1, 1].

and f^-1(x) = d/dx(x^4/3) = 4/3 x^{4/3 - 1} = 4/3 x^1/3

\(\therefore\) f^-1(x) is continuous when x ∈ [-1, 1].

\(\because\) Given function is satisfies both required conditions of Lagrange theorem.

\(\therefore\) Lagrange theorem is applicable for f(x) = x^4/3 in x ∈ [-1, 1].

f(x) = x^4/3, x ∈ [-1, 1]

\(\because\) f(x) is continuous when x ∈[-1, 1].

and f^-1(x) = d/dx(x^4/3) = 4/3 x^{4/3 - 1} = 4/3 x^1/3

\(\therefore\) f^-1(x) is continuous when x ∈ [-1, 1].

\(\because\) Given function is satisfies both required conditions of Lagrange theorem.

\(\therefore\) Lagrange theorem is applicable for f(x) = x^4/3 in x ∈ [-1, 1].