What is the frictional force on block B when friction coefficients are given as 0.1 and 0.15?

Answer depends on the exact force F and geometry; options include 80 N, 100 N, 120 N, 150 N.

Which option correctly gives the velocity components after a collision scenario?

Use conservation of momentum along relevant directions; specific numeric result depends on masses and velocities.

Is a body with constant velocity always accelerated?

No, a body with constant velocity is not accelerated.

Which is true for a body in uniform motion?

It has zero acceleration; velocity is constant.

What is the correct statement about kinetic energy change due to 500 J heat at constant volume?

ΔU = Q = 500 J for an ideal gas at constant volume.

Uttarakhand Lecturer Physics Set-A 2021 MCQ

Uttarakhand Government Jobs Lecturer 2021

Year 2021
Conducted By Uttarakhand Government / Uttarakhand Subordinate Education Department
Languages Hindi & English

Exam Details

Detail	Information
Examination	Physics Question Paper Set-A
Year	2021
Conducting Body	Uttarakhand Government / Uttarakhand Subordinate Education Department
Paper	Uttarakhand Special Subordinate Education Lecturer-Group 'C' Services General/Women Branch Examination
Subject	Physics
Question Type	Objective (MCQ)

This data aggregates the Physics Set-A MCQ paper for the Uttarakhand Special Subordinate Education Lecturer-Group C examinations (2021). It combines OCR-derived content from Page 1 and repaired content from Page 2 to present corrected MCQ stems with their options, covering topics from kinetic theory and mean free path to collisions, energy changes, friction, Planck’s constant dimensions, and linear motion. The page contains both English and Hindi language questions, and the extracted material is prepared for SEO-ready web presentation with structured metadata, FAQs, topics, and image SEO fields.

Major Topics Covered

Maxwell's equations / gas kinetics
Kinetic theory of gases
Ideal gas properties
Mean free path
Energy and work in gases
Collision processes
Inelastic collisions
Momentum
Angular momentum
Planck's constant
Friction
Static and kinetic friction
Block-wall contact
Coefficient of friction
Force interactions
Vector motion
Displacement and acceleration
Linear motion
Energy loss in collisions
Thermodynamics basics

Why This Paper is Important

Useful for Physics Question Paper Set-A preparation
Helps understand the latest exam pattern
Useful for practice and self-assessment
Covers frequently asked General Studies topics
Helpful for analysing question trends

Related Resources

Instructions

The relation between Pressure (P) of the gas and its total translational kinetic Energy (E) of the molecules per unit volume is : (b) P = \frac{3}{2}E (c) P = \frac{3}{4}E (d) P = \frac{4}{3}E (a) P = \frac{2}{3}E According to Maxwell, the value of mean free path is given by :

Questions (page 2)

Q1. 1. किसी गैस के दाब (P) और उसकी कुल अणुओं की रेखीय गतिज ऊर्जा (E) का इकाई आयतन में सम्बन्ध होता है :

(a) P = 2/3E
(b) P = (3/2)E
(c) P = 3/4E
(d) P = (4/3)E

Q2. 2. Maxwell के अनुसार माध्य मुक्त पथ दिया जाता है:

(a) λ = (1)/(√(π σ^2 n))
(b) λ = (1)/(√(2 π σ^2))
(c) λ = (1)/(√(2) (π σ^2 n))
(d) λ = (1)/(π σ^2 n)

Q3. 3. एक गैस को कठोर बर्तन में रखा जाता है। उसमें 500 J ऊष्मा प्रवाहित की जाती है। गैस की आन्तरिक ऊर्जा में परिवर्तन होगा :

(a) 23.8 J
(b) 11.9 J
(c) 50 J
(d) 500 J

Q4. 4. द्रव्यमान m का एक कण x-दिशा में 2v गति से चल रहा है और द्रव्यमान 2m का कण जो y-दिशा में v गति से चल रहा है, बीच टकराने पर दोनों कणों के क्षैतिज/ऊर्ध्व दिशा परिणाम का मूल्यांकन करें (उद्धृत विकल्प संदर्भित):

(a) 10 m
(b) 5√(5) m
(c) 5 m
(d) 5√(2) m

Q5. 5. चल रहा है, टकराता है। अगर यह टक्कर पूर्णतया अप्रयास्थ है, तो इस टक्कर में लगभग कितने प्रतिशत ऊर्जा का क्षय होगा ?

(a) 50\%
(b) 56\%
(c) 62\%
(d) 44\%

Q6. 6. प्लांक-नियतांक की विमा निम्न में से कौन सी है ?

(a) ऊर्जा
(b) संवेग
(c) आवृत्ति
(d) कोणीय संवेग

Q7. 7. A और B ब्लॉक जिनके वजन क्रमशः 20 N और 100 N हैं, wall पर दबाए जाते हैं जिनमें घर्षण गुणांक क्रमशः 0.1 और 0.15 है; दीवार द्वारा ब्लॉक B पर लगने वाला घर्षण बल कितना होगा? (चयन करें)

(a) 80 N
(b) 100 N
(c) 150 N
(d) 120 N

Q8. 8. एक सीधे रेखा पथ में गतिमान एक कण की स्थिति x = 12 + 18t + 9t² मीटर द्वारा दी गयी है; t = 2 s पर त्वरण कितना है?

(a) 36 \text m/s^2
(b) 84 \text m/s^2
(c) 18 \text m/s^2
(d) 54 \text m/s^2

Q9. 9. एक स्थिर गतिमान वस्तु के बारे में निम्न कथनों में से सही कौन सा है?

(a) हमेशा त्वरित होती है
(b) त्वरित नहीं होती है
(c) भी स्थिर वेग होता है
(d) अन्य

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Frequently asked questions

What is the Maxwell relation between pressure and energy density?

P = (2/3) (E/V) for an ideal gas where E is the total translational kinetic energy and V is volume.

What is mean free path in kinetic theory?

lambda = 1 / [sqrt(2) pi sigma^2 n] considering molecular cross-section sigma and number density n.

What happens to internal energy when heat is added at constant volume?

For a rigid container (constant volume), ΔU = Q, so internal energy changes by the amount of heat added.

How is the dimensional analysis of Planck's constant described?

Planck's constant has the dimension of angular momentum.

What is the acceleration for x = 12 + 18t + 9t^2?

a = d^2x/dt^2 = 18 m/s^2 (constant).

In an inelastic collision, what is the typical percentage energy loss?

Approximately 50% to 60% depending on masses; common exam answer around 50% in simple inelastic cases.

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