Bihar PGT Physics Mock Test - 5 - Bihar PGT/TGT/PRT MCQ

'Chivalry' is the quality in a man of being highly courteous in his presentation. None of the other options means the same as that of the given phrase.
A preacher is a religious teacher, a savior is a person who protects people in times of need and a knight is a great warrior.
Example-Chivalrous men are difficult to be found in today's world.

The given sentence is in passive voice and the correct conversion to active voice is given in option 3. Rest of the options fail to convey the exact meaning of the given sentence. 

समास - दो या दो से अधिक शब्दों से मिलकर जो नया और छोटा शब्द बनता है उस शब्द को हिन्दी में समास कहते हैं।

युद्धभूमि शब्द का समास विग्रह - युद्ध के लिए भूमि (सम्प्रदान तत्पुरुष समास)

तत्पुरुष समास - वह समास है जिसमें बाद का अथवा उत्तर पद प्रधान होता है तथा दोनों पदों के बीच का कारक-चिह्न लुप्त हो जाता है। वह समास है जिसमें बाद का अथवा उत्तर पद प्रधान होता है तथा दोनों पदों के बीच का कारक-चिह्न लुप्त हो जाता है। 

विभक्तियों के नामों के अनुसार तत्पुरुष समास के छः भेद हैं-

कर्म तत्पुरुष - को 

करण तत्पुरुष - से और के द्वारा 

सम्प्रदान तत्पुरुष - के लिए और को 

अपादान तत्पुरुष - से 

सम्बन्ध तत्पुरुष - का, के, की

अधिकरण तत्पुरुष - में पर और पर

अत: विकल्प (B) सही है I

नाविक शब्द में अयादि संधि है, अन्य विकल्पों में यण संधि है। 

संधि - संधि (सम् + धि) शब्द का अर्थ है 'मेल' या जोड़। दो निकटवर्ती वर्णों के परस्पर मेल से जो विकार (परिवर्तन) होता है वह संधि कहलाता है। 

नाविक = नौ + इक (अयादि संधि) 

नियम - औ + इ = आव् + इ 

अयादि संधि - ए, ऐ और ओ औ से परे किसी भी स्वर के होने पर क्रमशः अय् आय्, अव् और आव् हो जाता है। इसे अयादि संधि कहते हैं। 

अन्य विकल्प -

स्वागत = सु + आगत (उ +आ = व् +आ)

अन्वेषण =अनु + एषण (उ ए व् ए)

देव्यागमन = देवी + आगमन ( ई + आ = य् + आ) यण संधि - इ, ई के आगे कोई विजातीय (असमान) स्वर होने पर इ, ई को 'य्' हो जाता है। उ, ऊ के आगे किसी विजातीय स्वर के आने पर उ, ऊ को 'व्' हो जाता है। 'ऋ' के आगे किसी विजातीय स्वर के आने पर ऋ को 'र्' हो जाता है। इन्हें यण-संधि कहते हैं।

अत: विकल्प (C) सही है I

यहां "मन का" शब्द की एक से अधिक बार आवृति हो रही है।

1. मन का - हमारे मन के बारे में बता रहा है 

2. मन का - माला के दाने का बोध हो रहा है। 

यमक अलंकार - जब शब्द की एक से ज़्यादा बार आवृति होती है एवं विभिन्न अर्थ निकलते हैं तो वहाँ यमक अलंकार होता है।

अत: विकल्प (B) सही है I

The correct answer is Bal Gangadhar Tilak.

Key Points

• Bal Gangadhar Tilak gave a slogan 'Freedom is our birthright and we must have it.
• Lokmanya Bal Gangadhar Tilak roused the Indian people and injected fresh life into our liberation cause with his electrifying phrase, "Swaraj is my birth-right and I shall have it."
• Lokmanya Tilak was born in 1856, barely one year before the First War of Indian Independence, into a disappointed and sullen India, and following the defeat of the 1857 insurrection, into a swirl of sorrow and hopelessness.

Important Points

• Bal Gangadhar Tilak worked valiantly to aid the country's independence from British domination.
• Bal Gangadhar Tilak, a member of the Lal-Bal-Pal troika, was dubbed the "Father of Indian Unrest" by British colonial rulers.
• Lokmanya Tilak founded and published two newspapers: the Marathi Kesari and the English The Mahratta. To criticize the colonial overlords, he used his pen as a weapon.

The logic follows here is:

In a figure:

Middle number = (Top number × bottom number) - (left number × right number) 

In fig 1:

Middle number = (9 × 10) - (7 × 8)

= 90 - 56

= 34

In fig 2:

Middle number = (12 × 8) - (8 × 7)

= 96 - 56

= 40

Similarly,

In fig 3:

Middle number = (11 × 7) - (4 × 9) 

? = 77 - 36

? = 41

Hence, the correct answer is "41".

The correct answer is Bodh Gaya.

Key Points

• Buddha attained enlightenment at Bodh Gaya in Bihar.
• He attained enlightenment under a peepal tree at Bodh Gaya where he meditated for days.
• After attaining enlightenment, he came to be known as Buddha or the wise one.
• Buddha was a Kshatriya and belonged to Sakya gana.

 Thus, we can say that Buddha attained enlightenment at Bodh Gaya.

Additional Information

• He taught for the first time at Sarnath and passed away at Kusinara.

The correct answer is the Right to freedom of speech and expression.

• Article 19 of the Indian Constitution includes the Right to freedom of speech and expression.

Key Points

• Article 19 deals with the six Fundamental Rights. They are:
  • Right to freedom of speech and expression.
  • Right to assemble peacefully and without arms.
  • Right to form association or unions or co-operatives.
  • Right to move freely throughout the territory of India.
  • Right to reside and settle in any part of the territory of India.
  • Right to practice any profession or to carry on any occupation, trade or business.
• Fundamental Rights:
  • The Fundamental Rights have been described in Articles 12-35, Part III of the Indian Constitution.
  • The Right to Property (Article 31) was deleted from the list of Fundamental Rights.
    • By the 44th Amendment Act, 1978, it is made a normal constitutional right under Act 300A in Part XII of the Constitution

Additional Information

• Right to Constitutional Remedies is enumerated in Articles 32-35.
• Right against exploitation is enumerated in Articles 23 and 24.
• The right to freedom of Religion is enumerated in Articles 25-28.
• Fundamental Rights that are available to citizens only and not to foreigners: Article 15,16, 19, 29 and 30.

The correct answer is Lichens.

Key Points

• Lichens, are formed from the combination of algae and Fungi.
• In this symbiotic relation- algae helps in the food and nutrient availability, and fungi in turn provides shelter to algae.

1) 6941 ⇒ the square boxing ring

2) 5713 ⇒ put the box out

In 1) and 2) one number is common i. e. ‘1’ and one word is common i. e. ‘the’.

Hence, in code language, 1 = the

3) 1259 ⇒ box in the ring

In 1) and 3) two number are common i. e. 1 and 9, and also two words are common i. e. ‘the’ and ‘ring’.

But we know 1 is the code number for ‘the’, implies 9 is the code number for ‘ring’.

Code for 1 is the.

Code for 5 is box.

Code for 9 is ring.

Hence, "9" is the correct answer.

According to the information given in the question, we can draw the following diagram.

BC = 24 m
FC = ED = 12 m
FC = 12 m
Thus point F is in the west w.r.t to point C and 12 m from point C.
Hence, the correct answer is "12 m west".

Hypermetropia is corrected using converging lens.  In this defect the person is able to see far objects clearly but difficulty with near vision. The image is focused behind the retina rather than upon it. This occurs when eyeball is too short or the power of lens is too weak. By using a convex lens the defect is corrected.

Given peak potential is 200v
so, amplitude is 200
and frequency is 50Hz
so angular frequency is 2.πx50 = 314/sec
so the value is
E = 200sin(314t)
Hence option B is the correct answer.

We know that angular momentum,
L = r x P
Thus its dimension is [r][P] = ML²T^-1.

Dimension of work and energy are the same i.e. [ML²T⁻²].
 Power = Energy/Time,
 Energy = Power × Time (in terms of hour instead of second),
 Energy = Watt × Hour,
= [ML²T⁻³] [T],
= [ML²T⁻²].
But, Momentum(p) = Mass × Velocity,
 p = [M] [LT⁻¹],
 p = [MLT⁻¹].
Hence the Dimension of work, energy and watt-hour is the same i.e. [ML²T⁻²] but the dimension of momentum is different ([MLT⁻¹]).

Parallactic second is the unit of distance because parallactic second is an abbreviation of parsec. Parsec = Parsec is the Unit for larger distances.It is the distance at which a star would make parallax of one Second of arc.

Fringe width is inversely proportional to the distance between slits so it will be doubled.

Earlier force between two particles is 
F=kq^1​q²​​/ r²
When distance is halved force becomes 
F′= kq₁​q²/(r/2)² ​​=4kq₁​q₂/r²​​=4F

The needle will point along W-E if the result of the earth’s magnetic field and magnetic field due to the coil have a resultant in the W-E direction. This happens if B cos 45^o=Earth's field
⟹ (μ0​nI​/2r) cos45^o=(4π×10−7×30×0.35​)/(2×0.12) ×(1/√2)​​=0.39G=Earth's magnetic field.

Coulombs law states the force between two charged particles is directly proportional to the product of charges and inversely proportional to the square of distance between them.
So if the distance is doubled then the force would decrease 4 times.
So the new force would be 120/4=30 Newton.

Diamagnetic materials have a small and negative value of magnetic susceptibility. Paramagnetic materials have a small and positive value of magnetic susceptibility and ferromagnetic materials have a large and positive value of magnetic susceptibility.

Horizontal component is a component of Earth’s magnetic field along the horizontal direction in the magnetic meridian. It is denoted by B_H. If B is the intensity of Earth’s total magnetic field, then the horizontal component of Earth’s magnetic field is given by:
B_H=Bcosδ

Kinematic equations of rotational motion about a fixed axis,

where ω is the instantaneous angular velocity, α is the instantaneous angular acceleration, θ is the angular displacement, and t is time.

EXPLANATION:

Given: Length of the rod = L, and angular displacement θ = 2t²

• Using the first equation,

• Using the second equation, 

Therefore option 4 is correct.

Light remains confined within the core of simple optical fibre because of Total internal reflection from core cladding boundary.
Light is confined within the core of a simple optical fiber by. If light hits a boundary of a material of lower refractive index at a steep enough angle, it cannot get out and it's reflected back into the high index medium, as in the figure below.
An optical fibre is a thin rod of high-quality glass. Very little light is absorbed by the glass.Optical fibres can carry more information than an ordinary cable of the same thickness. The signals in optical fibres do not weaken as much over long distances as the signals in ordinary cables.
Total internal reflection. When light traveling in an optically dense medium hits a boundary at a steep angle (larger than the critical angle for the boundary), the light is completely reflected. This effect is used in optical fibers to confine light in the core.
The light in a fiber-optic cable travels through the core (hallway) by constantly bouncing from the cladding (mirror-lined walls), a principle called total internal reflection. Because the cladding does not absorb any light from the core, the light wave can travel great distances.
 

When we use white light, the central bright will have light from all wavelengths as none of them cancel out. Hence the central bright fringe appears white.
For other bright fringes, depending on the wavelength of light constructive interference will not take place for certain wavelengths. Hence they will not be white, rather will be coloured, hence differentiated from central fringe.

Induced emf =Blv=12V. It is induced in the northward direction by right hand rule (emf=)
therefore if the south end of the pole has potential of 0V, the north end will have a potential of 12V.