Bihar PGT Physics Mock Test - 3 - Bihar PGT/TGT/PRT MCQ

The options don't have a simple past tense alternative. The sentence seems to state that the team had arrived a day prior to the day of this conversation. The sentence goes absolutely fine in the past perfect tense as the presence of the word 'yesterday' shows that an activity has been completed in the past. 

A possessed person is one who is under the influence of an evil spirit. No other option appropriately represents the phrase given.
Example- Mohit ran from the house as if he was possessed person. 

The correct option is Option 3, i.e., 'disdainfully'.
The sentence talks about the contempt that the administration had. As such, the administration can frequently only speak ill of it. The word ‘disdainfully’ means ‘refused with contempt or hate’. Hence, the correct option is Option 3.

वेदना शब्द स्त्रीलिंग है।

वेदना का अर्थ है दुख पर विशेष रूप से वेदना शब्द को प्रयोग उस समय किया जाता हे जब कोई प्रेमी अपने प्रियतम की चाहत में तरसता है और उस समय दुख का वर्णन करने के लिये वेदना शब्द का प्रयोग करते है।

वह संज्ञा शब्द जो हमें स्त्री जाति का बोध कराते हैं, वे शब्द स्त्रीलिंग संज्ञा शब्द कहलाते हैं।

‘Knife’ is related to ‘Cut’, means we use knife for cutting.

Similarly,

We use pen for writing.

Hence, Write is the correct answer.

The total distance = 15 + 20 + 30 + 15 = 80m

Hence, the correct answer is 80m.

Given number: 

5934162

New number after digits are arranged in descending order:

9654321

Thus we can see only position of one digit is remain unchanged.

Hence, the correct answer is "One".

The correct answer is 2009.

Key Points

• The 86th amendment to the constitution of India in 2002, provided the Right to Education as a fundamental right in part-III of the Constitution.
• The first official document on the Right to Education was Ramamurti Committee Report in 1990.
• Tapas Majumdar Committee (1999) was set up, which encompassed the insertion of Article 21A.
• The Right to Education serves as a building block to ensure that every child has his or her right to get a quality elementary education.

Important Points

• Features of Right to Education (RTE) Act, 2009 -
  • The RTE Act aims to provide primary education to all children aged 6 to 14 years.
  • It enforces Education as a Fundamental Right (Article 21).
  • The act mandates 25% reservation for disadvantaged sections of the society.
  • It had a clause for “No Detention Policy” which has been removed under The Right of Children to Free and Compulsory Education (Amendment) Act, 2019.
  • It also states that sharing of financial and other responsibilities between the Central and State Governments.

Additional Information

• Some important 'Parts' of the Indian Constitution:
  • Part 2 - Citizenship
  • Part 3 - Fundamental Rights
  • Part 4 - Directive Principles of State Policy
  • Part 4A - Fundamental Duties
  • Part 14 - UPSC and SPSC.
  • Part 15 - Election Commission
  • Part 17 - Official language
  • Part 20 - Amendment of Constitution

The correct answer is Inscriptions.

Key Points

• Writings on hard surfaces like stone or metal are called Inscriptions.
• Often kings got their orders inscribed so that people could see, read and obey them.
• Other inscriptions have the activities done by men and women recorded on them.
• Kings kept record of their victories in the form of inscriptions.

 Thus, we can say that writings on hard surfaces like stone and metals are called Inscriptions.

Additional Information

•  Manuscripts were written on palm leaves or birch.

The correct answer is South-West Monsoon.

• Air moves from the high-pressure area over the southern Indian Ocean, in a south-easterly direction, crosses the equator and turns right towards the low-pressure areas over the Indian subcontinent. 
• These are known as the Southwest Monsoon winds responsible for widespread rainfall in mainland India.
• Due to the shift of ITCZ, the trade winds of the southern hemisphere cross the equator between 40° and 60°E longitudes and start blowing from southwest to northeast due to the Coriolis force. It becomes southwest monsoon.
• In winter, the ITCZ moves southward, and so the reversal of winds from northeast to south and southwest takes place. They are called northeast monsoons.
• The western cyclonic disturbances are weather phenomena of the winter months brought in by the westerly flow from the Mediterranean region.
• They usually influence the weather of the north and north-western regions of India. 
• The season of retreating monsoon (October and November) is a period of transition between the warm rainy monsoon and the dry cool winter.

Lenses of the same diameter collect equal amounts of light.
Intensity is the measure of amount of light collected, hence the intensity remains the same.
Intensity is measured by the photoelectric current. So the photoelectric current would also remain the same.

We know that, qE=mg
So,E=mg/q
E=9.1x10^-31x9.8x10¹⁹/1.6
E=9.1x9.8x10^-12/1.6
E=5.6x10^-11

The child should hold the umbrella in the direction at which the rain appears to fall on him, which is the direction of relative speed of rain with respect to the  child.

The impending motion refers to the state of a body when it is on the verge of slipping. In such cases, the static friction has reached its upper limit and is given by the equation, F=μ_sN

The acceleration due to gravity on surface of earth is
g=GM​/ R²
 
g=GρV​/R²
where, G is the gravitational constant, M  is mass of earth, R  is radius of earth, ρ is the density and V is the volume of earth.
∴g=Gρ(4/3)​πR^3​/ R²
 
∴g=(4/3)​GρπR
⇒g∝ρR
since, all other quantities are constant.
Hence, if the radius of the earth be increased by a factor of 5, density will decrease by 5  to keep the value of g the same.

Radius of nth orbital
r_n​= ϵ₀​n₂h₂​/ πmZe₂
Wherein 
=r_n​∝ n²​ /Z
= ϵ_0​h²/πme² ​=0.529
r=(n^2​/Z)a₀​
For Z=1 r=n²a₀​

The dimension of the units of a derived physical quantity may be defined as the number of times the fundamental units of mass, length and time appear in the physical quantity.

The expression for velocity obtained above is said to be its dimensional formula. Thus, the dimensional formula for velocity is [M⁰L¹T​​​​​​^-1].

Force due to surface tension acts all along the circumference of the circular plate. Therefore, force required to take away of plate is,
F = T x 2πr = 70 x 2 x 3.14 x 4 = 1758.4 dyne/cm
 

From (i), (ii), and (iii)

Here negative sign signifies that the current is decreasing

From (v) and (vi)

On integrating

Substituting this value in (iv) we get

Alcohol and HCl are polar molecules since they have a net dipole moment towards a particular direction. Both water and benzene are non-polar molecules. But water is a conductor of electricity, whereas benzene is a dielectric (insulator).

• When a source of white light is used instead of a monochromatic source, the diffracted image of the slit gets dispersed into constituent colours of white light.
• The central maximum will be white and on either side of the central maximum, there will be coloured fringes.

The dimensional formula of a given unit is [ML²T⁻³A⁻²].
So, from the given option only resistance has this dimensional formula so resistance is the correct answer.

Explanation:Angular momentum is a vector quantity (more precisely, a pseudovector) that represents the product of a body's rotational inertia and rotational velocity about a particular axis.

Using formula for Paschen series,
1/λ=R[(1/3²)-1/n₂²],n₂=4,5,6….
For shortest wavelength, n₂=∞
∴1/λ=R[(1/3²)-1/∞²],n₂=R/9 or λ=9/R ≈ 820.4 nm

I section is generally used as a beam because of its high section modulus as its most of the area is situated away from its neutral axis hence it has high moment of inertia i.e. high section modulus i.e. high moment carrying capacity which is the major requirement for a good beam section.

From the formula we get,
X_L=X_C
ωL=1/ωC
⇒ω²=1/LC
⇒ω=1/√Lc
⇒ω=1/√10^-3x10^-5
⇒ω=10⁴
We also know that,
X_L=ωL
⇒X_L=104x10-3
⇒X_L=10 Ω
Therefore,X_L=X_C=10Ω