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# Category Archives: Class X (S-II)

## Hindi X

Shift-II

१) कहानी का नाटकीकरण (समूहकार्य)

२)प्रश्न निर्माण करना (समूहकार्य)

३) स्वरचित रचना

## Sanskrit X

**दीर्घ**** ****गुण**** ****वृद्धि**** ****सन्धेः**** ****उदाहरणानि**** ****।**

**( ****प्रत्येकस्य**** ****दश**** ****उदाहरणानि**** )**

**Shift-II**

## Chemistry X

**Date of submission: 5 June 2015 (Shift-II)**

- Collect different material which contains varieties of acids and bases and stick it in a scrap book.

## Biology X

**Date of submission: 5 June 2015 (Shift-II)**

- Study on the impact of modern life style on any one system in human body.

## Physics X

**Date of submission: 5 June 2015 (Shift-II)**

**Section A**

1. Why are conductors different from insulators?

2. Is drift speed of electrons in a conductor carrying current the same as the speed of current?

3. What sets the electrons into motion in an electric field?

4. Why is tungsten metal used for making filaments of incandescent lamps?

5. Which are the metals that are generally used:

(i) in electric circuit and (ii) as transmission lines.

**Section B**

If I was A refrigerator/incandescent lamp/television,

1. How much electricity do you use in an hour?

2. Approximately how many of you were sold in your locality last year?

3. Assuming you were used one hour per day, every day last year, how much total energy did you use?

4. Assuming the average cost of electricity is Rs 3 per kWh, what was the total cost of energy to operate you in the last year.

## English X

1.SUMMARY : WRITE THE SUMMARY OF CHAPTER 1 TO 14 FROM THE NOVEL “THE STORY OF MY LIFE –HELEN KELLER” .

2. PREPARE MIND –MAP OF THE CHAPTER “TWO GENTLEMAN OF VERONA”.

**(Date of submission- First week of June2015)**

## Physics X

**Date of submission: 5 June 2015 (Shift-II)**

**Section A**

1. Why are conductors different from insulators?

2. Is drift speed of electrons in a conductor carrying current the same as the speed of current?

3. What sets the electrons into motion in an electric field?

4. Why is tungsten metal used for making filaments of incandescent lamps?

5. Which are the metals that are generally used:

(i) in electric circuit and (ii) as transmission lines.

**Section B**

If I was A refrigerator/incandescent lamp/television,

1. How much electricity do you use in an hour?

2. Approximately how many of you were sold in your locality last year?

3. Assuming you were used one hour per day, every day last year, how much total energy did you use?

4. Assuming the average cost of electricity is Rs 3 per kWh, what was the total cost of energy to operate you in the last year.

## Physics X

**Date of submission: 5 June 2015 (Shift-II)**

**Section A**

1. Why are conductors different from insulators?

2. Is drift speed of electrons in a conductor carrying current the same as the speed of current?

3. What sets the electrons into motion in an electric field?

4. Why is tungsten metal used for making filaments of incandescent lamps?

5. Which are the metals that are generally used:

(i) in electric circuit and (ii) as transmission lines.

**Section B**

If I was A refrigerator/incandescent lamp/television,

1. How much electricity do you use in an hour?

2. Approximately how many of you were sold in your locality last year?

3. Assuming you were used one hour per day, every day last year, how much total energy did you use?

4. Assuming the average cost of electricity is Rs 3 per kWh, what was the total cost of energy to operate you in the last year.

## Physics X

**Date of submission: 5 June 2015 (Shift-II)**

**Section A**

1. Why are conductors different from insulators?

2. Is drift speed of electrons in a conductor carrying current the same as the speed of current?

3. What sets the electrons into motion in an electric field?

4. Why is tungsten metal used for making filaments of incandescent lamps?

5. Which are the metals that are generally used:

(i) in electric circuit and (ii) as transmission lines.

**Section B**

If I was A refrigerator/incandescent lamp/television,

1. How much electricity do you use in an hour?

2. Approximately how many of you were sold in your locality last year?

3. Assuming you were used one hour per day, every day last year, how much total energy did you use?

## English X A,B,C,

- PREPARE BROCHURE FOR ANY TOURIST LOCALITY, BASED ON THE UNIT-TRAVEL AND TOURISM (MCB)
- READ CHAPTERS, FROM 15-25- THE STORY OF MY LIFE
- COMPLETE TEXT EXERCISE-VIRTUALLY TRUE

**Shift-II**

**Date of submission: 2 Jan 2015**

## Biology X A,B,C

1. In-text and exercise question answers of topic HEREDITY.

2. Revision for FA3 Exam- How do organisms reproduce?

**Ms Chandrika V. K. (PGT Biology shift II)**

**Date of submission: 2 Jan. 2015**

## Social Science X A,B,C

**Shift-II**

**Date of submission: 2 Jan., 2015**

__ANSWER THE FOLLOWING__

1”.British rule in India would have collapsed if Indians had not cooperated”.How did this statement help in starting a mass movement in India against the British rule?

2.Discuss the various measures adopted by the nationalist leaders in creating nationalism among the people.

3.Draw and locate the following places in the outline map of India.

A)The place where Gandhiji organised his first satyagraha movement.

B)The place associated with Civil Disobedience Movement.

C)The place where 1929 Congress session held.

D)The place where cotton mill workers were on strike

E)The place where 22 policemen were killed.

## Science X A,B,C

**Shift-II**

**Date of submission: 2 Jan., 2015**

**Multiple choice questions**

1.Bending of a ray of light,when it enters obliquely from one medium to other is called

a) reflection b) refraction c) dispersion d) scattering

2. A lens converges a ray of light.The lens is

a) concave b) plane c) convex d) plano- concave

3. The relation ,is called

a) Newtons law b) Snell’s law c)Joule’s law d) Boyle’s law

4. When light enters from a rarer medium(medium 1) to a denser medium(medium 2),then n_{21} has value

a) <1 b)>1 c) 1 d) none of these

5. For light going from air to water **n _{wa}**=4/3.Then

**n**has value

_{aw}a) 16/9 b) 3/2 c) 1 d) ¾

6. A ray of light passes undeviated through a point on the principal axis of a spherical lens. The point is

a) focus b) centre of curvature c) optical centre d) nowhere

7. A thick lens has less focal length. Its power is

a) less b) more c) zero d) infinite

8. A sharp image of an object is obtained on a screen by using a convex lens.Inorder to determine the focal length of the lens you need to measure the distance between

a) lens and the object b) lens and the screen c) object and the screen d) lens and the screen and also object and the screen

9. The mirror which is used as rear view mirror in automobiles is

a) concave mirror b) convex mirror c) plane mirror d) any of these mirrorW

Answer the following questions

1. Define the SI unit of power of a lens.

2. Write mirror formula.

3. Write lens formula.

4. State the laws of refraction

5. Write the relation between radius of curvature and focal length of a spherical mirror.

6. Complete the ray diagram

7.An object of height 3cm is placed at a distance of 9cm in front of concave mirror of focal length 18cm.Find the position ,nature and size of the image formed.

8. An object of height 3cm is placed at a distance of 20cm in front of convex lens of focal length 12cm.Find the position ,nature and size of the image formed.

9. A convex mirror used for rear view on an automobile has R=3m, if a bus is located 3m from the mirror. Find position nature and size of the image.

10. draw the ray diagram in each case to show the position and nature of the image formed when the object is placed:

(i) at the centre of curvature of a concave mirror

(ii) between pole and focus of a concave mirror

(iii) in front of a convex mirror

(iv) at 2f of a convex lens

(v) infront of a concave lens

11. A concave lens has focal length 15cm, at what distance should the object from the lens be placed so that it forms an image at 10cm from the lens.

## Maths X A,B,C (2)

**Shift-II**

**Date of submission: 2 Jan., 2015**

__Work sheet 1- Quadratic Equation__

**Name: Class: Roll no.**

1. The general form of a quadratic equation in x is ____________________________________.

2. In 2 + 4x – 5 = 0, a = __________, b = __________, c = __________

3. In a + bx + c = 0 the sum of the roots is given by α + β = ________________ and product αβ = _______________

4. If 3 + 5x + 8 = 0 is given then α + β = __________ and αβ = ____________

5. If the sum of the roots is ‘s’ and product is ‘p’ then the quadratic equation in x is ___________________________________

6. 5 and -2 are the roots of a quadratic equation in x. The quadratic equation is ___________________________________

7. The discriminant of a + bx + c = 0 is given by , D = ______________________

8. The discriminant of 3 – 2x + 1 = 0 is given by __________________________

9. If – 4ac = 0 is negative then the roots are _____________________________

10. If – 4ac = 0 then the roots are ____________________________________

11. If – 4ac = 0 is positive then the roots are _______________________________

12. The roots of the quadratic equation 2 – 3x + 1 = 0 are ____________________________

13. The roots of 2 + 3x + 1 = 0 are _______________________________

14. The roots of 2 – 2x + 1 = 0 are ________________________________

15. The roots of – 2x + 1 = 0 are _________________________________

## Maths X A,B,C (1)

**Shift-II**

**Date of submission: 2 Jan., 2015**

__Work sheet 2- Quadratic Equation__

**Name: Class: Roll no.**

1. The quadratic equation 2 + x + 1 = 0 has ________________________ roots.

2. If is a root of + kx – = 0 then k = ________________

3. The roots of 2 – x – = 0 are ___________________ and ____________________

4. Write true or false

a) Every quadratic equation has exactly one root. (True/False)

b) Every quadratic equation has at least one real root. (True/False)

c) Every quadratic equation has at most two roots. (True/False)

d) If the coefficient of and the constant term have opposite signs then it has real roots. (True/False)

5. Is 0.2 a root of – 0.4 = 0?

____________________________________________________________________________

6. Write a quadratic equation in y with constant term -4 and coefficient of as 5. _____________

7. A quadratic equation in x with equal roots is _______________________________________

8. A quadratic equation in x with no real roots is ______________________________________

9. A quadratic equation with real and distinct roots is _________________________________

The roots of 2 + x – 2 = 0 are _____________________ and ______________________