Bihar PGT Physics Mock Test - 6 - Bihar PGT/TGT/PRT MCQ

The passage seems to be about a regulation passed by the government regarding medical colleges. The first sentence of the passage is Psince it introduces the fact that a regulation was passed.

The second sentence would be R, which tells us about the content of the regulation.

The third sentence should be Q. Q also gives us information about the content of the regulation but it contains the word 'also', which makes it obvious that it will come after R.

The last sentence is S, which tells us what is not mentioned in the regulation. Therefore, the correct sequence is PRQS.

Rule- The object in the active voice becomes the subject in the passive voice and the subject in the active voice becomes the object in the passive voice.This is valid in both ways (Active to passive and vice-versa). Further, the verb is changed to the past participle form. 

कालिदास संस्कृत भाषा के महान कवि ओर नाटककार थे। उन्होंने भारत की पौराणिक कथाओं को आधार बनाकर रचनाएं की, जिसमें भारतीय जीवन और दर्शन के विविध रूप और मूल तत्त्व निरूपित हैं। कालिदास अपनी इन्हीं विशेषताओं के कारण राष्ट्र की समग्र राष्ट्रीय चेतना को स्वर देने वाले कवि माने जाते हैं संसृत साहित्य में ही नहीं अपितु समग्र साहित्यिक संसार में उन्हें कविकुलश्रेष्ठ तथा कविशिरोमणि माना जाता है।

प्रस्तुत विकल्पों में से 'मेघदूतम्' यह कालिदास का खण्डकाव्य है।

बघेली बोली जबलपुर में बोली जाती है। बघेली या बाघेली बोली, हिन्दी की एक बोली है जो भारत के बघेलखण्ड क्षेत्र में बोली जाती है। बघेले राजपूतों के आधार पर रीवा तथा आसपास का क्षेत्र बघेलखंड कहलाता है और वहाँ की बोली को बघेलखंडी या बघेली कहलाती हैं। इसके अन्य नाम मन्नाडी, रिवाई, गंगाई, मंडल, केवोत, केवाती बोली, केवानी और नागपुरी हैं। 

कुजगह फोड़ा और ससुर वैद्य - कहावत का अर्थ है: धर्म संकट की स्थिति। 

वाक्य प्रयोग - एक ओर मेरा सारा काम पड़ा है, दूसरी ओर मुझे जल्दी निकलना है।

आदि का अर्थ है: आरंभ, शुरू। और इसका विलोम शब्द अंत है।

Bacteria are the sole members of the Kingdom Monera. They are the most abundant micro-organisms.
On the basis of origin, bacteria can be divided into two types - Archaebacteria & Eubacteria

Archaebacteria:

• These bacteria are special since they live in some of the harshest habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens).
• Archaebacteria differ from other bacteria in having a different cell wall structure and this feature is responsible for their survival in extreme conditions.
• For example - Methanogens are present in the gut of several ruminant animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals.

Additional Information

Eubacteria:

• There are thousands of different eubacteria or ‘true bacteria’.
• They are characterised by the presence of a rigid cell wall, and if motile, a flagellum.
• The Eubacteria can be both autotrophic & heterotrophic.

The correct answer is Dispersion.

Key Points

• When a beam of white light is made to fall on one refracting face of the prism, it splits into seven colours i.e. violet, indigo, blue, green, yellow, orange and red (VIBGYOR) from the base.
• The phenomenon of the splitting of white light into its constituent colours is called dispersion of light.
• The pattern of colour components of light is called the spectrum of light.
• The red light bends the least, while the violet light bends the most. 
• ​The rainbow is an example of the dispersion of sunlight by the water drops in the atmosphere. 

The correct answer is Atomic Energy.

Key Points

• A biomass energy source is one that is derived from organic matter.
• The source of atomic energy is radioactive metals which are of non-organic nature and thus cannot be classified as a biomass energy source.
  

The full form of ITCZ is The Intertropical Convergence Zone.

• It is the area encircling Earth near the Equator, where there is a convergence of the northeast and southeast trade winds takes place.
• The ITCZ was originally identified from the 1920s to the 1940s as the "Intertropical Front" but after the recognition in the 1940s and 1950s of the significance of wind field convergence in tropical weather production.

The correct answer is carbon.

Key Points

• A fullerene is an allotrope of carbon whose molecule consists of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms.
  • The molecule may be a hollow sphere, ellipsoid, tube, or many other shapes and sizes.
• Various allotropes of carbon are diamond, graphite, lonsdaleite, fullerene, C-540, C-70, amorphous carbon, carbon nanotube.
• Diamond and crystalline silicon are isomorphous because they both have a three-dimensional tetrahedral structure.
• Allotropy, the existence of a chemical element in two or more forms, which may differ in the arrangement of atoms in crystalline solids or in the occurrence of molecules that contain different numbers of atoms.

Additional Information

• When an element exists in more than one crystalline form, those forms are called allotropes; the two most common allotropes of carbon are diamond and graphite.
  • One of the allotropic form of a carbon is a fullerene in which “carbon atoms” are “arranged in a sphere”.
  • Each sphere has 60 carbon atoms and each carbon atom is linked by a single covalent.
  • The fullerene is considered as purest allotrope of “carbon” because they have “smooth structure” without having dangling bonds.

The correct answer is 12 January.

• On 12 January, National Youth Day is celebrated in India.

Key Points

• National Youth Day is celebrated on 12 January and is also known as Rashtriya Yuva Diwas.
  • The day is observed to commemorate the birth anniversary of Swami Vivekananda, one of the greatest philosophers and spiritual leaders.
  • In 1984, the Indian Government first declared to celebrate the birthday of Swami Vivekananda i.e. 12 January as National Youth Day. Since then the day has been celebrated as National Youth Day all over the country.
  • The main aim of the Government is to make a better future for the country by motivating the youths through the way of their life and ideas of the Swami Vivekananda.

Additional Information

• Swami Vivekananda was born on 12 January 1863 was an Indian Hindu monk. He was a chief disciple of the 19th-century Indian mystic Ramakrishna. 
  • When Swami Ji became a monk from Narendra, his name was Swami Vividishanand, but before moving to Chicago, he changed his name to Vivekananda.
  • Swami Vivekananda books are:
    • Karma Yoga (1896).
    • Raj Yoga (1896).
    • Vedanta Shastra (1896).
    • Speeches from Colombo to Almora (1897).

The family chart is as follows:

i) A is father of C and D is son of B.

ii) E is brother of A.

iii) If C is sister of D

Drawing the family tree as per the given information:

Thus we can see B is the wife of A.

E is the brother of A.

Thus we can conclude B is the sister-in-law of E.

Hence, the correct answer is "Sister-in-law".

Here F=f
U=-f(-because it is present in front of a convex lens)
It is given that both focal length and object distance is f .
So according to lens formula 1/F=1/v+1/u
So 1/f=(1/v)+(-1/f)
=>1/f=(1/v)-(1/f)
So (1/f)+(1/f)=1/f
=>1+(1/f)=(1/v)
=>2/f=1/v
So from here we can say that v= f/2
Hence option B is correct.
 

Explanation:As magnetic monopole does not exist. If we split the bar magnet into two pieces  each part will have its own north and south pole.

= 4t-3
At t = 0.25s
e= 2V

According to Fleming’s right-hand rule induced current flows from Q to P.
Hence P is at higher potential and Q is at lower potential. 
Therefore, A is positively charged and B is negatively charged.
Hence:
q_A​=+800μC and q_b​=−800μC

Cosφ=R/Z=R/√R²/ ω²L²=5/√(25+(50)²x (0.1)²)
=5/√(25+25)=1/√2
⇒φ=π/4

CONCEPT:

• Conservative force: A force is conservative if the work done by the force in displacing an object from one point to another point is independent of the path followed by the object and depends only on the endpoints.
• Electrostatic forces, gravitational forces, elastic forces, magnetic forces, etc and are examples of conservative forces.

• Non-conservative forces: A force is said to be non-conservative if work done by or against the force in moving a body from one position to another, depends on the path followed between these two positions.
• Examples:  Frictional force, Viscous force, Airdrag, etc.

EXPLANATION:

• Suppose a particle starts at A and a force F_ext is acting on it. The particle is moved around the loop using the same force, F_ext
• Suppose the particle eventually ends up at A itself then the entire displacement of the particle is zero which means the total work done is zero.
• A total work of one zero means there is no expenditure of energy which means the total energy is conserved. Hence statement p is correct
• The total displacement of a particle in a closed loop is zero, which means the total work done is zero. Hence statement q is correct.
• The total mechanical energy of a system is given by 

⇒ Total energy = Potential Energy + Kinetic energy

• From the statement p, it is clear that if the total work done is zero it means the energy is conserved.
• Which means Gain in kinetic energy = Loss in Potential Energy. Hence option r is correct.

The result of an addition or subtraction in the number having different precisions should be reported to the same number of decimal places as present in the number having the least number of decimal places.

The final result should, therefore, be rounded off to one decimal place, i.e. 663.8

The direction of the current will be anticlockwise.
 
According to Lenz's law, the current in the coil will be induced in the direction that'll oppose the external magnetic field .
As the flux due to the external magnet is increasing ( as the N-pole is brought close ) , the coil will have to induce current in the anticlockwise direction to oppose this increase in flux and not in clockwise direction as that'll end up supporting the external flux.

v²r/g= (L¹T^-1)2L1/LT^-2=L²
v²/rg= (LT^-1)² L1(L¹ T^-2) ​=M⁰L⁰T⁰
v²g/r​=(LT^-1)2 LT^-2/L​=L²T^-4
v²rg=(LT^-1)²(L1) (LT^-1) =L⁴T^-3
So, option D is correct.

I=(I1)cosωt+(I₂)sinωt
(I²)_mean=I₁²cos²ωt+I₂²sin²ωt+I₁I₂cosωtsinωt
I₁²×(1/2)×i₂²×(1/2)+2_I1I₂×0
I_rms=√(i²)_mean=√(I₁²+I₂²/2)=(1/√2)( I₁²+I₂²)^1/2

Zener Diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. By passing a small current through the diode from a voltage source, via a suitable current limiting resistor (RS), the zener diode will conduct sufficient current to maintain a voltage drop of Vout.

Constructive interference occurs when the path differences (S₁​P−S₂​P) is an integral multiple of λ or (S₁​P−S₂​P)=nλ
Where n=0,1 ,2 3,….

A small negatively charged body placed at X would be pushed to the right

The negative charge feels a force opposite to the direction of field.

 Other cases are not possible from properties of electric lines of force.

Using energy conservation,

Magnification of a telescope is given by:
M= θ_i/θ_o​ ​​
10= (h/d_i)/(h/d_o​) ​​
10= d_o​​/d_i​
Distance of image, d_i​=d_o​​/10

Explanation:The holes are just the abscence of a electron in a energy band. But its easier to describe the abscence of a electron as a single moving positive charge than it is to describe the motion of all the other electrons in the band.In a band you have N electrons. Remove one of those electrons(by for instance p-doping) and you have N-1 electrons left. Now you can either choose to describe this with the behavior of those N-1 electrons. Or you can choose to describe it as if there is one single hole moving around in the band.So mathematicly the holes behave just like a positivly charged electron.