ASSSINGMENT FOR SUMMER VACATION
CLASS –X (PHYSICS)
1. Draw the x-t curve and v-t curve to show uniform motion.
2. An athlete is running on a circular road of radius 14m. calculate its displacement
And distance at the end of 3.5 rounds.
3. A person travels first half of its journey with velocity v1 and next half with v2. Find
Its average velocity for entire journey.
4. Derive the third equation of motion graphically.
5. A bullet of mass 100gm moving with velocity 250m/s strike a wooden block and come
To rest in 2 s. Calculate the retardation and force offered by the block.
6. Prove that F = ma.
7. Derive the expression for acceleration due to gravity.
8. Calculate the gravitational force b/w you and earth.
9. A person climbs on A stair having 20 steps each of height 25cm in 2 min. calculate
his power. (g = 10 m/s2)
10. State the law of conservation of momentum. A bullet of mass 250gm is fired with
a velocity 400m/s from a gun of mass 1.5kg. Calculate the recoil velocity of gun.
11. State the law of conservation of energy. Verify that the M.E. of a freely falling body remains conserved.
12. A body of mass 10kg is dropped from a height 20m. Calculate the KE and velocity
With which it strike the ground.
13. State Archimedes principle. Write its application.
14. A cuboid of dimensions 20cm x 30cm x 10cm and mass 5kg is kept on the floor.
Find the maximum and minimum pressure applied by it on the floor.
15. Define the following:
i) Amplitude ii) Frequency iii) time period iv) wavelength
16. State the frequency range of infra, ultra and audible sound.
17. Differentiate b/w longitudinal and transverse wave.
18. Differentiate b/w Electromagnetic and mechanical wave.
19. State the applications of ultrasound.
20. What is echo? The reflected sound of clapping is heard after 1 s. find the distance of the cliff. (speed of sound in air = 334 m/s)
21. What do you mean by SONAR? Explain its construction and working. State its uses.
22. Define electric potential & state its unit. Calculate the work done in carrying a charge of 10µC through a p.d. of 2.6 V.
23. State Ohm’s law. Draw a graph to show the relation b/w V & I for Ohmic conductor.
24. Define resistance. State the factors on which it depends.
25. You have three resistors of resistances 2Ω, 3Ω & 5Ω . Calculate the maximum and minimum equivalent resistance that can be obtained by using them.
26. NCERT EXERCISE Q no. 9 ,10,11,15,16, 18.
Happy summer vacation.
By : S K Singh
PGT (Physics)
K V BSF Kishanganj
Subject:- CHEMISTRY
Assignment for Summer Holidays
1. Prepare a lists of elements with atomic number, name and symbol (upto atomic no. 105)
2. Prepare a list of some common elements with their valency.
3. Make a list of cations and anions with their valency.
4. Write characteristics of metals and non-metals.
5. What is reactivity series of metals? Arrange the metals in decreasing order of reactivity in a vertical column, in this series also indicate most reactive, moderately reactive and least reactive metals.
6. Define and explain with examples:-
a) Combination reaction
b) Decomposition reaction
c) Displacement reaction
d) Double displacement reaction
7. What are oxidation and reduction reactions? Explain with examples.
8. What is corrosion? Give examples
9. What is rancidity?
10. Make static atomic models displaying electronic configuration of the first eighteenth elements.
- BY S.C PRASAD, PGT