class 6 / maths / worksheet-5

ARMY PUBLIC SCHOOL, GOLCONDA

CLASS – 6 / MATHS

CHAPTER – 1 / KNOWING OUR NUMBERS

WORKSHEET – 5

Q1. Write the following in Roman Numerals

a) 89                                                 f) 759                 

b) 175                                               g) 996

c) 197                                               h) 1015

d) 236                                               i) 2359  

e) 478                                               j) 16464

Q2. Write the following in Hindu-Arabic numerals

 a) CCXLII                                      f) CCXXIX

 b) CDLXXVIII                              g) XCIX

 c) DCXIV                                       h) LXXXIX

 d) DXCVIII                                    i) KCIX

 e) CDXLVI                                    j) DCXCVII

Q3. Which of the following are meaningless?

 a) VX                                             f) KKKCCXI                                            

 b) IC                                              g) VC                                                           

 c) CI                                              h) IL

 d) IXX                                           I) XXXX

 e) XLIX                                        J) LXXXIX

class 6 / maths / worksheet-4

ARMY PUBLIC SCHOOL, GOLCONDA

CLASS – 6 / MATHS

CHAPTER – 1 / KNOWING OUR NUMBERS

WORKSHEET – 4

Q1. Round off each of the following to the nearest :

A. Tens

I. 12,096

 II. 808

 B. Hundreds

 I. 14,627

 II.  28,826

 C. Thousands

 I. 7,832

 II. 4,36,952

Q2. List all the numbers which will be rounded off to the nearest ten as 470.

 Q3. Find the greatest and the smallest numbers which will be rounded off to the nearest hundreds as 800.

 Q4. Give an estimate (by rounding off to greatest place value) 

 a) 538+234+4,318

 b) 1,89,768 - 1,45,890

 c) 335+12,904 d) 8235-8236 

CLASS 10 / ELECTRICITY / WORKSHEET-2

Class 10 – Physics

 Ch 12 – Electricity

(WORKSHEET - 2)

Subtopic – (12.2) Potential difference

(12.3) Circuit diagram

MCQs

1.  One joule of work done by a unit charge is equivalent to :

(a) One Volt
(b) Six Volts
(c) Two Volt

(d) can’t be determined

2.  Which of the following units could be used to measure the potential difference? OR, what is the S.I. unit of potential difference?

(a) Ampere
(b) Joule
(c) Volt
(d) Coulomb

3.  Device used to measure potential difference in circuit across the terminals-

(a) Galvanometer
(b) Ammeter
(c) Voltmeter
(d) Barometer

4.  The resistance of Voltmeter should be-

(a) Small
(b) Large
(c) Very large
(d) Doesn’t matter

5.  In an electric circuit voltmeter should be connected in-

(a) Series
(b) Parallel
(c) both (a) and (b)
(d) neither (a) nor (b)

6.  Which of the following statements correctly defines a volt?

(a) a volt is a joule per ampere
(b) a volt is a joule per coulomb
(c) a volt is a joule per unit time
(d) a volt is a joule per ohm

Question / answers

1.   What do you understand by the term potential difference?

2.   Name the device used to maintain potential difference across a conductor.

3.   What is the S.I. unit of potential difference? Which device is used to measure it?

4.   State relationship between potential difference, work done and charge.

5.   What do you mean by saying that potential difference between two points is one volt?

6.   How Ammeter and Voltmeter is connected in a circuit? Explain with the help of a diagram.

7.   State whether a voltmeter or ammeter, which should have low and high resistance. Give reason for your answer.

8.   Draw the circuit symbols for – (a) fixed resistance (b) variable resistance (c) a cell  (d) a battery of 5 cells  (e) an open switch    (f) a closed switch.

9.   What is a circuit diagram? Draw a labeled diagram of a circuit comprising a cell, a resistance, an ammeter, a voltmeter and a closed switch.

10.      A student made an electric circuit shown here ,to measure the current across two lamps

a)    Are the lamps in series or parallel?

b)   The student has made a mistake in circuit, what is the mistake?

c)    Draw the correct circuit diagram.

NUMERICALS

11.      How much work is done when one coulomb of charge moves against the potential difference of one volt?

12.      Calculate the work done in moving a charge of 4 coulomb from a point at 220 volts to another point at 230 volts?

13.      How much energy is transferred by a 12 V power supply to each coulomb of charge which it moves around a circuit?

14.      What is the potential difference between the terminal of the battery if 250 joule of work is required to transfer 20 coulomb of charge from one terminal of battery to another?

15.      A potential difference of 10 volt causes a current of 2 A to flow for 1 minute, how much energy is transferred?

16.      A flash of lighting carries 10 C of charge which flows for 0.01 seconds. If the voltage is 10 MV, what is the energy?

17.      Draw a circuit of comprising an ammeter, a voltmeter, a battery of 3 cells, an open key and a resistance across which potential difference can be measured.

18.      Draw a circuit of comprising a variable resistance, a cell and a closed key.

19.      Draw a circuit of comprising a resistance, a battery of two cells and an open key.

20.      A potential difference across a lamp is 12 V. How many joules of energy are changed, when:

a)    A charge of 5 C passes through it?

b)   A current of 2A flows through it for 10 seconds?

CLASS 9 / MOTION / WORKSHEET-2

ARMY PUBLIC SCHOOL, GOLCONDA

Class 9 – Physics - Ch 8 – Motion

(WORKSHEET - 2)

Subtopic –

·       UNIFORM & NON-UNIFORM MOTION.

·       Graphical representation of DISTANCE-TIME

Fill in the blanks

1. The motion of the earth around the sun is ___________ (uniform /non-uniform).

2. When a stone falls from a height, its motion is ___________ (uniform /non-uniform).

3. A car travels 10 km in every 5 minutes; its motion is ___________ (uniform /non-uniform).

4. In ___________ (uniform /non-uniform) motion, object travels with uniform speed/velocity.

5. In the story of hare-tortoise, motion followed by rabbit is ___________ (uniform /non-uniform).

6. In ___________ (uniform /non-uniform) motion, object travels with variable speed/velocity.

7. In uniform motion, distance.-time graph is a ___________ (straight /curved) line.

8. In non-uniform motion, distance.-time graph is a ___________ (straight /curved) line.

9. In uniform motion, slope of distance.-time graph is nothing but ___________ (speed /distance).

10. In distance.-time graph time is represented on ___________ (horizontal /vertical) axis and distance      is represented on ___________ (horizontal /vertical) axis.

MCQs

1.  If the time-displacement graph of a particle is along X-axis, the velocity of particle is-

(a) unit value                                                                                 (b) zero

             (c) infinite                                                                                      (d) none of these.

2.  Which of the Following time-displacement graph does not present a real situation-

(a)                                                         (c)

(b)                                                      (d)

3.  The given time-displacement graph shows that body is at-

    (a) rest                                                                                     (b) non-uniform motion

(c) uniform motion                                                                  (d) none of these

4.  In the given time-displacement graph the distance covered by body B in 2 seconds-

(a) 100                                                                                     (b) 200
(c) 50                                                                                       (d) 150

5.  In the given time-displacement graph the distance covered by body A in 2 seconds-

(a) 100                                                                                     (b) 200
(c) 50                                                                                       (d) 150

Q & A’s

1.  Define uniform motion with example.

2.  Define non-uniform motion with example.

3. Distinguish between uniform and non-uniform motion.

4. What are the uses of graphical study of motion?

5. What is the nature of the distance-time graph for uniform and non-uniform motion of an object?

6. What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis?

7. Show that the distance-time graph gives speed/ velocity of the body.

(Hint: find slope).

8. What does the path of an object look like on distance-time graph when it is in-

·         Uniform motion

·         Non-uniform motion

·         Rest or a stationary body

9.  The following tables give data about motion of an automobile –

TIME (seconds)	9.00	9.30	10.00	10.30	11.00	11.30
DISTANCE ( meter)	0	30	30	45	60	100

·         Plot the distance-time graph

·         Is the automobile’s motion is an example of uniform or non-uniform motion?

10.         Plot distance-time graph of the given data. And calculate speed for each case.

A)    

Time (s)	0	1	2	3	4	5	6
Distance(m)	0	10	20	30	40	50	60

        

B)  

Time (s)	0	1	2	3	4	5	6
Distance(m)	0	8	16	24	32	40	48

        

11.         The following data gives the displacement of body at various instant of time.

  

Time (s)	0	1	2	3	4	5	6
Distance(m)	2	4	6	8	10	12	14

        

·         Calculate velocity.

·         Calculate distance travelled in first 4 seconds?

·         Calculate distance travelled in last 4 seconds?

12.         If the body is at rest then the path followed by it on distance-time graph will be given by which line (A or B)? Why is it so, explain.

13.         Name two quantities, the slope of whose graphs gives “speed”. Show graph as well.

14.         The distance-time graph of two trains is given here. The train starts simultaneously in the same direction.

·   How much ahead of A is B when the motion starts?

·   What is speed of A and B?

·   When and where A will catch B?

·   Is the motion of both trains – uniform or non-uniform? Justify your answer.

15.         The given figure gives the distance-time graph of three objects A, B and C. Study the graph and answers the following questions.

·   Which of the three is travelling the fastest

·   Are all three ever at the same point on the road?

·   How far has C travelled when B passes A?

·   How far has B travelled by the time it passes C?