Physics Teacher

Question

Q1.

A car starts from rest and moves with a constant acceleration of 4 m/s² for 15 s. Calculate

Final velocity
Total displacement
Average velocity

Answer 1

Answer: C (0 m)

Answer 2

Answer: C

Answer 3

Answer: C

Answer 4

Answer: 20 m/s

Answer 5

Answer: 200 m

Answer 6

Answer: 40 m/s

Answer 7

Answer: A

Answer 8

Answer: Straight line on displacement–time graph

Answer 9

Answer: Zero

Answer 10

Answer: 45 m

Average Power	Instantaneous Power
Defined as total work divided by total time	Defined as power at a particular instant
Formula: P_avg = W/t	Formula: P_inst = F·v
Used when total work and time are given	Used when force or velocity varies with time

Kilowatt (kW)	Kilowatt-hour (kWh)
Unit of power	Unit of energy
1 kW = 1000 W	1 kWh = 1000 W × 3600 s = 3.6 × 10⁶ J
Measures rate of energy consumption	Measures total energy consumed

Column A	Column B
(a) Unit of power	(p) [M¹L²T⁻³]
(b) Dimensional formula of power	(q) Joule
(c) Unit of work	(r) Watt
(d) 1 hp	(s) 746 W

Column A (Physical Quantity)	Column B (Expression)
(a) Average power	(p) F·v
(b) Instantaneous power	(q) W/t
(c) Power in lifting	(r) mgh/t
(d) Power when F ⊥ v	(s) Zero

Column A (Situation)	Column B (Power)
(a) Body moving with constant velocity on frictionless surface	(p) Positive
(b) Body thrown upward against gravity	(q) Negative
(c) Body falling freely under gravity	(r) Zero
(d) Body in uniform circular motion	(s) Variable

Column A	Column B
(a) James Watt	(p) Unit of energy
(b) Joule	(q) Commercial unit of power
(c) Horsepower	(r) SI unit of power
(d) Kilowatt-hour	(s) Improved steam engine

Column A (Value)	Column B (Equivalent)
(a) 1 kW	(p) 3.6 × 10⁶ J
(b) 1 kWh	(q) 1000 W
(c) 1 hp	(r) 746 W
(d) 1 W	(s) 1 J/s

Section	Q. No.	Answer
MCQ (Easy)	1	(b)
	2	(c)
	3	(b)
	4	(b)
	5	(b)
	6	(b)
	7	(c)
	8	(c)
MCQ (Medium)	9	(b)
	10	(b)
	11	(b)
	12	(c)
	13	(d)
	14	(a)
	15	(c)
MCQ (Hard)	16	(c)
	17	(d)
	18	(b)
	19	(b)
	20	(a)
Assertion-Reason	1	(a)
	2	(a)
	3	(a)
	4	(c)
	5	(c)
	6	(d)
	7	(a)
	8	(a)

Power	Energy
Rate of doing work	Capacity to do work
P = W / t	W = Pt
Unit = Watt (W)	Unit = Joule (J)
Scalar Quantity	Scalar Quantity
Measures speed of work	Measures amount of work

Kinematics	Dynamics
Studies motion only	Studies motion + force
Force is ignored	Force is considered
Easier chapter	Uses Newton's Laws
Example: Speed	Example: Force

Object	Distance	Point Object?
Car travelling 200 km	Yes	✔
Cricket ball moving 40 m	Yes	✔
Pencil moving 2 cm	No	✖

Score	Performance
23–25	Excellent (NEET Top Rank Level)
18–22	Very Good
12–17	Good, Needs Practice
Below 12	Revise Theory & Formulae

Q	Ans	Q	Ans	Q	Ans
1	___	16	___	31	___
2	___	17	___	32	___
3	___	18	___	33	___
4	___	19	___	34	___
5	___	20	___	35	___
6	___	21	___	36	___
7	___	22	___	37	___
8	___	23	___	38	___
9	___	24	___	39	___
10	___	25	___	40	___
11	___	26	___	41	___
12	___	27	___	42	___
13	___	28	___	43	___
14	___	29	___	44	___
15	___	30	___	45	___

Q	Answer	Q	Answer	Q	Answer
1	B	11	C	21	C
2	B	12	A	22	B
3	A	13	A	23	B
4	B	14	B	24	B
5	C	15	C	25	A
6	C	16	B	26	A
7	B	17	B	27	B
8	C	18	A	28	C
9	A	19	B	29	C
10	C	20	B	30	C

Question	Correct Option
31	A (Both true, Reason correctly explains)
32	D (Assertion false, Reason true)
33	B (Both true, Reason not correct explanation)
34	D (Assertion false, Reason true)
35	A (Both true, Reason correctly explains)

Marks	Performance
170–180	Outstanding ⭐⭐⭐⭐⭐
150–169	Excellent
120–149	Very Good
90–119	Good
Below 90	Needs Revision

Q	Ans	Q	Ans	Q	Ans
1	___	16	___	31	___
2	___	17	___	32	___
3	___	18	___	33	___
4	___	19	___	34	___
5	___	20	___	35	___
6	___	21	___	36	___
7	___	22	___	37	___
8	___	23	___	38	___
9	___	24	___	39	___
10	___	25	___	40	___
11	___	26	___	41	___
12	___	27	___	42	___
13	___	28	___	43	___
14	___	29	___	44	___
15	___	30	___	45	___

Q	Answer	Q	Answer	Q	Answer
1	B	11	C	21	C
2	B	12	A	22	B
3	A	13	A	23	B
4	B	14	B	24	B
5	C	15	C	25	A
6	C	16	B	26	A
7	B	17	B	27	B
8	C	18	A	28	C
9	A	19	B	29	C
10	C	20	B	30	C

Friday, July 24, 2026

Power Class 11 Physics Notes for NEET | Complete Revision Guide

Section A Multiple Choice Questions

Level · Easy

Level · Medium

Level · Hard

Section B Very Short Answer Questions (1 Mark Each)

Section C Short Answer Questions (2 Marks Each)

Section D Long Answer Questions (3–5 Marks Each)

Section E Assertion and Reason Questions

Section F Fill in the Blanks

Section G Case Study Based Questions

Case Study 1 · Hydroelectric Power Plant

Case Study 2 · Electric Vehicle

Case Study 3 · Human Power Output

Section H Statement Based Questions

Passage 1

Passage 2

Section I Match the Columns

Section J True or False

Section K Numerical Problems (With Detailed Solutions)

Answer Key (Quick Reference — MCQs & Assertion-Reason)

Exam Tips for CBSE Class 11

NEET Physics NotesChapter: POWER

Simple Meaning

Example

Average Power

Instantaneous Power

Power in Terms of Force

Special Cases

Case 1: Force and Velocity in Same Direction

Case 2: Force Opposite to Velocity

Case 3: Force Perpendicular to Velocity

Nature of Power

Dimensions of Power

SI Unit

Definition of One Watt

Other Units

Electrical Energy

Kilowatt-hour (kWh)

Conversion

Example

Important Fact

Difference Between Power and Energy

Graph Concept

NEET Formula Sheet

NEET Quick Revision

Frequently Asked NEET Questions

Q1. What is Power?

Q2. Why is Power a Scalar Quantity?

Q3. What is SI Unit of Power?

Q4. Is kWh a unit of Power?

Q5. What is the power when Force is perpendicular to Velocity?

Saturday, July 18, 2026

NEET Physics: Motion in One Dimension – Mechanics, Kinematics & Dynamics Notes

NEET Physics – Motion in One Dimension

Chapter 1: Basic Concepts of Mechanics (Complete Notes)

1. What is Physics?

2. What is Mechanics?

Mechanics is divided into two parts

3. Kinematics

Definition

Example

4. Dynamics

Definition

Difference Between Kinematics and Dynamics

5. Frame of Reference

Definition

It contains

(1) Observer

(2) Space Coordinate

(3) Time Coordinate

Example

Important Points

There is NO Absolute Motion

Example

6. Rest and Motion

Rest

Motion

Remember

NEET Physics Notes
Chapter: POWER

Q	Ans	Q	Ans	Q	Ans
1	___	16	___	31	___
2	___	17	___	32	___
3	___	18	___	33	___
4	___	19	___	34	___
5	___	20	___	35	___
6	___	21	___	36	___
7	___	22	___	37	___
8	___	23	___	38	___
9	___	24	___	39	___
10	___	25	___	40	___
11	___	26	___	41	___
12	___	27	___	42	___
13	___	28	___	43	___
14	___	29	___	44	___
15	___	30	___	45	___

Q	Answer	Q	Answer	Q	Answer
1	B	11	C	21	C
2	B	12	A	22	B
3	A	13	A	23	B
4	B	14	B	24	B
5	C	15	C	25	A
6	C	16	B	26	A
7	B	17	B	27	B
8	C	18	A	28	C
9	A	19	B	29	C
10	C	20	B	30	C