Explore topic-wise InterviewSolutions in Current Affairs.

Correct option is (a) Ocean currents

The principal function of the eye-lens is to focus light on to the retina. 

Solution : Ciliary muscles

(d) Both (b) and (c)

The ciliary muscles make the eyes lens thicker (more converging).

Correct option is: (C) 1

\(\overrightarrow F_{net} = 0\)

\(\frac{\overrightarrow {dp}}{dt} = 0\)

\(m_A \ v_A + m_B v_B = m_B v_A + m_A \ v_B\)

\(m_A \ v_A - m_B \ v_B = -m_B \ v_A + m_A \ v_B\)

\(m_A(v_A + v_B) = m_B (v_A + v_B)\)

\(\frac{m_A}{m_B} = 1\)

Correct option is: (C) 1

Correct option is: (A) mv

Change in momentum is 

\(\Delta p = mv\)

Correct option is: (A) mv

Correct option is: (B) Newton/ metre²

concept: The distance between the two consecutive crests in transverse wave motion is called wavelength.                         

The boat bounces up, i.e., it travels from crest to the consecutive crest along wave motion. Wavelength = distance between two consecutive crests i.e.,       

λ=80m Velocity of wave = 20 m/s Hence, time in one bounce of boat

t=λ/v=80/20=4s

(a) of electrons that participate in a reaction.

a. A sickle to cut sugarcane :

A sickle is made of iron. 

An iron sickle is hard and malleable. 

When sharpened it will be able to cut the hard sugarcane.

b. The sheets used for roofing :

1. The sheets used for roofing are made of plastic, aluminium. 

2. Plastic is hard, hence, protects against weather conditions. 

3. Plastic is transparent, hence, sunlight can pass through it. 

4. Aluminium is hard, light weight and durable, hence, protects against all weather conditions. 

5. Malleable hence formed into thin sheets.

c. A screwdriver :

1. A screwdriver is made up of iron, steel, aluminium.

2. A screwdriver possesses property of hardness hence, it easily pierces a screw in piece of wood, wall, metals etc.

d. A pair of tongs :

1. A pair of tongs are made up of iron, steel aluminium etc. 

Tongs are used to lift hot, boiling utensils or vessels. 

2. Tongs are hard, ductile and malleable. 

3. Hence, have strong grip to hold utensils. 

4. Rubbers fitted on the ends will protect from thermal conduction, from bums.

e. Electric cables :

1. Electric cables are metal wires (thin) wound in plastic. 

2. Metal wires possess the property of hardness, ductility, electrical conductivity. 

3. Plastic /rubber covering possesses the property of hardness, elasticity and are bad conductors of heat and electricity.

f. Ornaments :

1. They are made up of metals like gold and silver. 

2. They possess the property of hardness, ductility, malleability, lustre.

g. Pots and pans :

1. They are used to cook food, hence metals like aluminium, steel are used. 

2. They possess the property of hardness, ductility, malleability, thermal conductivity, electrical conductivity, (microwave ovens)

1. The change of a solid substance directly into a gas or vapour without first changing into liquid is called sublimation.

2. Substances that sublimate :

Camphor, napthalene balls, ammonium chloride, iodine.

Correct option is A) NH₃

Correct option is C) 10 gm

\(2\frac{1}{4}\) km or 2.25 km

a. mm 

b. mg

a. nm → µ m → mm → cm

b. 1 mm → 1 cm → 1 m → 1 km

The correct answer is: (a) An atom has equal number of electrons and protons

An atom always has equal number of electrons and protons to maintain the
electrical neutrality.

Hence, the correct option is A.

वह ट्रांजिस्टर जिसमें 2-टाइप अर्द्धचालक की एक बहुत महीन तराश (slice) को n-टाइप अर्द्धचालकों के दो छोटे-छोटे गुटकों के बीच दबाकर बनाया जाता है,n-p-n ट्रांजिस्टर कहलाता है।

ट्रायोड में कैथोड से उत्सर्जित इलेक्ट्रॉन, ग्रिड में से होकर संग्राहक प्लेट (ऐनोड) पर पहुँचते हैं। ट्रांजिस्टर में उत्सर्जक से प्राप्त इलेक्ट्रॉन (अथवा कोटर) आधार में से होकर संग्राहक पर पहुँचते हैं। परन्तु इन दोनों युक्तियों में प्रयुक्त भौतिक प्रक्रियाएँ भिन्न-भिन्न हैं। ट्रायोड में धारा का नियन्त्रण ग्रिड तथा कैथोड के बीच के वैद्युत-क्षेत्र से होता है। अत: धारा ग्रिड-वोल्टता (कैथोड के सापेक्ष) पर निर्भर करती है तथा काफी बड़े परिसर में धारा में परिवर्तन ग्रिड-वोल्टता में परिवर्तन के लगभग अनुक्रमानुपाती होता है। अतः ट्रायोड वोल्टता-संचालित युक्ति है।

इसके विपरीत, ट्रांजिस्टर में संग्राहक-धारा आधार-धारा से नियन्त्रित होती है जो उत्सर्जक-धारा से प्राप्त की जाती है। संग्राहक-धारा में परिवर्तन आधार-धारा में परिवर्तन के अनुक्रमानुपाती होता है (न कि आधार-विभव में परिवर्तन के)। अतः ट्रांजिस्टर ‘धारा-संचालित युक्ति है।

n-p-n ट्रांजिस्टर में आवेश वाहक मुक्त इलेक्ट्रॉन होते हैं तथा p-n-p ट्रांजिस्टर में आवेश वाहक कोटर होते हैं। परन्तु कोटरों की गतिशीलता से मुक्त इलेक्ट्रॉनों की गतिशीलता अधिक होती है। इसीलिए p-n-p की तुलना में n-p-n ट्रांजिस्टर अधिक उपयोगी है।

Δi_E = 1.8 मिली ऐम्पियर, Δ_iC= 1.6  मिली ऐम्पियर 

आधार धारा में परिवर्तन Δi_B = Δi_E – Δi_C

_{= 1.8-1.6} 

_{= 0.2 मिली ऐम्पियर}

उत्सर्जक धारा = आधार धारा + संग्राहक धारा 

अर्थात् i_E = i_B + i_C

Ordered list (<OI>) - 

This tag is used to display items with following type values

Type = 1 for 1,2,3,

Type = i for i,ii,iii,

Type = I for I,II,III

Type = a for a,b,c,…, 

Type = A for A,B,C,….

Eg:- <OLType=”1">

<li>Apple

<li>Orange

<li>Grapes

</OL>

(a) (i), (ii) – True

Nesting of framesets

A<frameset>tag contains another

<frameset>tag

Eg:

<frameset cols=”30%,*”>

<frame src=”page1.html”>

<frameset rows=”33%,33%,*”>

<frame src=”page2.html”>

<frame src=”page3.htmr>

<frame src=”page4.html”>

</frameset>

</frameset>

<html>

<head>

<title>

table

</head>

<body bgcolor=”cyan”>

<table border=”1″>

<tralign=”center”>

<th colspan=”3″>PAY ROLL </th >

</tr>

<tralign=”center”>

<th>EMPNO</th>

<th>NAME</th>

<th>SALARY</th>

</tr>

<tralign=”center”>

<td>101<br>102<br>103</td>

<td>ABIN<br>SINI<br>ANU</td>

<td>15,000<br>25,000<br>20,000</td>

</tr>

</table>

</body>

</html>

Sp<html>

<head>

<title>

table creation </title>

</head>

<body bgcolor =”cyan">

<"table border=”1">

<tralign=”center>

<th colspan=”2″>No. of Students</th>

</tr>

<tralign=”left”>

<th>Science</th>

<td>55</td>

</tr>

<tralign=”left">

<th>Commerce</th>

<td>60</td>

</tr>

<tr align=”left”>

<th>Humanities</th>

<td>58</td>

</tr>

</table>

</body>

</html>

<A HREF=”www.keralapsc.org”>PSC</A>

SELECT tag in HTML is used to create a drop down list.

<OLType=”a”>

<OL start=”3”>

Ordered list is used for this<OL start = “5”>

(1) <inputtype=’’text>

(2) <inputtype=”radio” name=”sex” value=”male”><inputtype=”radio” name-’sex” value=”female">

(3) <input type=”textarea>

(4) <inputtype=”Submit” value=”ok”>

This is <frameset>

Ordered list is used for this <OL start = “5”>

(a) Element → Frame → Attach Content

NET is one of the latest technologies introduced by Microsoft Corporation. With the help of .NET a de veloper can use a programming language of his choice to quickly and easily develop distributed ap plications. Distributed application means processing take place in any processor is free in the net work. It Is similar to JVM. It is platform independent.

Eg: ASP.NET, VB.NET

To start a list from the count of 3 using a <OLstart=”3”>

Data Description or Data Definition.

To create a list using Lower case letters use <OLType=”a”>

<html>

<head>

<title>

table creation

</title>

</head>

<body bgcolor =“red”>

<table bonder = “1”>

<tr>

<th>Serial No</th>

<th>Name</th>

<th>cost</th>

</tr>

<tr>

<td>1</td>

<td>Banana</td>

<td>Rs. 49</td>

</tr>

<tr>

<td>2</td>

<td>grapes</td>

<td>Rs. 110</td>

</tr>

<tr>

<td>3</td>

<td>Apple</td>

<td>Rs.180<ftd>

</tr>

<tr>

<td>4</td>

<td>Orange</td>

<td>Rs.60</td>

<td>5</td>

<td>Mango</td>

<td>Rs.40</Itd>

</tr>

</table>

</body>

</html>

<html>

<head>

<title>

Ordered list demonstration

</title>

</head>

<body bgcolor=red;

<H1> Fruits </H1>

<OLType= "i">

<li>Apple</li>

<li>Grapes</li>

<li>Orange</li>

<li>Mangoc</li>

<li> Banana</li>

</OL>

</Body>

</html>

(d) Reset picture feature of Picture Tools Format is used to revert the original picture.

(d) When leading is reduced, it automatically brings the lines of text closer.

Brightness option is used to adjust the brightness of the picture.

Letters, numbers and symbols are the various forms of data.

The first chip Intel 4004 was made by Intel in 1971 scientist Ted Hoff and engineer Frederico Faggin

Communication channel is responsible for carrying data in the form of signals from sender to receiver.

True 

Because it allows the user to control and provide the data to the computer system using physical gestures point, click and drag.