physics - a) nuclear fusion b) nuclear fission c) radio activity d) nuclear fission and fusion both

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  • 1. The Universe (2) 2. Nuclear Fission and Fusion (3) 3. Electricity, its Heating and Chemical Effects (3) 4. Source of Energy (3) 5. Refraction of Light (3) 6. Reflection of Light (3) 7. Optical Instruments (3) 8. Magnetic Effects of Electric Current (3) 9. Motion (2) 10. Force (3) 11. Gravitation (3) 12. Work, Power and energy (3) 13. Heat (3) 14. Wave Motion and Sound (3)

    Questions: 40 Marks: 160

    PHYSICS

  • 2 Physics

    Multiple Choice Questions

    1. Name the star closest to us : a) Pole star b) Alpha centuari c) Uranus d) None of these

    2. Big Bang theory was proposed by : a) Newton b) Hubble c) Kepler d) All of these

    3. Which planet is called the morning star as well as the evening star ? a) Venus b) Mercury c) Mars d) Jupiter

    4. Great Bear is commonly known as a) Saptrishi b) Dhruv tara c) Pole star d) Orion

    5. Planets which do not have satellites are a) Mars b) Venus & Mercury c) Jupiter d) Saturn

    6. The planet having the largest number of satellites amongst the following is a) Saturn b) Jupiter c) Mars d) Uranus

    7. Natural satellite of earth is a) Sun b) Moon c) Saturn d) Uranus

    8. The smallest planet amongst the following is a) Mercury b) Venus c) Jupiter d) Saturn

    9. The biggest planet amongst the following is a) Mercury b) Venus c) Jupiter d) Saturn

    10. Any heavenly body that revolves around a planet is called

    CHAPTER - 1 THE UNIVERSE

    a) comet b) nebulae c) star d) Satellite

    11. Light takes ————— seconds to reach earth from the sun a) 400 b) 450 c) 500 d) 550

    12. The planet nearest to the sun is a) Mercury b) Venus c) Jupiter d) Saturn

    13. Pulsar is another name of a) White dwarf b) Neutron star c) Nabula d) Black hole

    14. SHOOTING STAR is another name for a) comet b) nebulae c) meteor d) Solar flare

    15. Distance between Sun and Earth is about ______ million Km a) 159.6 b) 150.6 c) 140.6 d) 149.6

    16. Tail of a comet always points a) towards the sun b) away from the sun c) towards moon d) towards center of earth and sun

    17. Sun is also known as a) Star b) Pole c) Setellite d) Planet

    18. Which if the following planets have rings around it? a) Uranus b) Mars c) Jupiter d) Saturn

    19. Planet Venus spins about its axis from a) west to east b) east to west c) north to south d) south to north

  • Physics 3

    20. A family of stars is called a a) solar system b) galaxy c) universe d) none of these

    21. Moon is setellite of a) Mars b) Earth c) Jupitar d) Saturn

    22. Inferior planet amongst the following is a) Mercury b) Jupiter c) Neptune d) none of these

    23. Titan is a satellite of a) Mercury b) Venus c) Neptune d) Saturn

    24. Triton is a satellite of a) Mercury b) Venus c) Neptune d) Saturn

    25. Oberon is a satellite of a) Mercury b) Venus c) Neptune d) saturn

    26. All stars appear to move from a) east to west b) west to east c) north to south d) south to north

    27. Which of the following does not emit any light a) sun b) white dwarf star c) proto star d) alpha centauri

    28. Exploding star is called a) nova b) supernova c) pulsar d) black hole

    29. Number of supernovas that have been recorded till date are a) 2 b) 3 c) 4 d) 5

    30. Indian name mangal is for the planet a) Mars b) Uranus c) Neptune d) Saturn

    31. Meteor is also known as a) Comet b) Shooting Star c) Nabula d) Pole star

    32. Temperature of the surface of the Sun is a) 5550°C b) 5005°C c) 5050°C d) 5500°C

    33. Shani graha is the name for a) Mars b) Uranus c) Neptune d) Saturn

    34. Indra is the name for a) Mars b) Uranus c) Neptune d) Saturn

    35. Which of the following takes minimum time to revolve around the sun a) Mercury b) Uranus c) Neptune d) Saturn

    36. Hottest planet of the solar system is a) Mercury b) Uranus c) Neptune d) Saturn

    37. Asteroids are a) Small Planet b) Shooting Stars c) Found in a belt between earth and venus d) none of these

    38. SROSS stands for a) Stretched Rohini Satellite Series b) Stretching of shooting star c) search of satellite station d) none of these

    Answers 1 a 2 b 3 a 4 a 5 b 6 a 7 b 8 a 9 c 10 d 11 c 12 a 13 b 14 c 15 d 16 b 17 a 18 d 19 b 20 b 21 b 22 a 23 d 24 c 25 b 26 a 27 c 28 b 29 d 30 a 31 b 32 d 33 d 34 b 35 a 36 a 37 a 38 a 39 d 40 b 41 c 42 a

  • 4 Physics

    Multiple Choice Questions 1. Which of the following nuclei will be more

    stable : a) 32

    16S b) 27

    13Al c) 235

    92 U d) 14

    7 N

    2. Name the city where enrichment of uranium is done : a) Muradabad b) Sikandrabad c) Hyderabad d) Illahabad

    3. The nuclear fuel in the sun is : a) Helium b) Nitrogen c) Hydrogen d) Pu-239

    4. Which of the following is used as a coolant : a) Graphite b) Water c) Heavy water d) None of these

    5. The number of neutrons in 92U238 is a) 330 b) 238 c) 146 d) 92

    6. The number of protons in 92U238 is a) 330 b) 238 c) 146 d) 92

    7. Atom bomb is based on the principle of: a) Nuclear fusion b) Nuclear fission c) Radio activity d) Nuclear fission and fusion both

    8. 6 11c on decay produces:-

    a) Positron b) ß Particle c) a Particle d) None

    9. A Cyclotron of an electric field cannot ac- celerate:- a) Proton b) Deuterons c) Neutrons d) None

    10. Specific charge is given by a) e/m b) m/e c) e x m d) em

    11. The specific charge of an electron is a) 1.602 x 1019 C b) – 1.602 x 1019 C c) – 1.76 x 1011 C/kg d) 1.76 x 1011 C/kg

    12. An atom bomb is based on a) nuclear fission b) nuclear fusion c) both fission and fusion d) none of these

    13. The average energy released during fission of a uranium atom is about a) 50 MeV b) 100 MeV c) 200 MeV d) 400 MeV

    14. The atomic number of the parent atom, when a beta particle is given out a) increases by unity b) decreases by unity c) gets halved d) remains same

    15. Radioactivity was discovered by a) Bohr b) Becquerel c) Curie d) Rutherford

    16. Sun energy results because of a) nuclear blasts b) nuclear fission c) nuclear fusion d) none of these

    17. Neutron was discovered by a) Curie b) Becquerel c) Chadwick d) Rutherford

    CHAPTER - 2 NUCLEAR FISSION AND FUSION

  • Physics 5

    18. The temperature of sun’s core is a) 106 °C b) 105 °C c) 104 °C d) 103 °C

    19. Out of the following, the fuel used in nuclear reactors is a) U-235 b) U-236 c) U-237 d) U-239

    20. The massless, neutral subatomic particle in an atom is a) neutron b) Proton c) neutrino d) Positron

    21. Which is not fissionable material:- a) U-238 b) U-235 c) U-233 d) U-239

    22. The process of increasing U-235 percantage in U-238 is called a) fusion b) fission c) chain reaction d) enrichment

    23. Amongst the following , the most important propellent used in rockets is a) liquid petrol b) liquid hydrogen c) liquid oxygen d) none of these

    24. The first controlled chain reaction was carried out by a) Otto Hahn b) Newton c) Fermi d) Bethe and Blotch

    25. The first atomic power station in India is a) Bhabha atomic Research Centre b) Narora power station c) Tarapur Atomic Power station d) Hyderabad atomic power station

    26. Hydrogen bomb once exploded is a/an a) controlled nuclear fusion reaction b) Uncontrolled nuclear fusion reaction

    c) controlled nuclear fission reaction d) Uncontrolled nuclear fission reaction

    27. Nuclear fusion takes place at a) low temperature b) low pressure c) high temperature d) high pressure

    28. A positron has the same mass as a) electron b) proton c) positron d) deuteron

    29. 6 14c in upper atmosphere is formed by the

    action of Neutrons on:-

    a) 7 14 N b) 8

    17 O

    c) 6 12 C d) 8

    18 O

    30. Control rods used in nuclear reactors are made of a) Steel b) Cadmium c) boron d) Plutonium

    31. Heavy water is:- a) H2O18 b) H2O16 c) D2O d) None

    32. Which nuclide is radioactive:- a) C12 b) H2 d) O16 d) Both C14 and H3

    33. The percentage of mass that is converted into energy during nuclear fusion is a) 40% b) 20% c) 10% d) 1%

    34. Nuclear fission reactions are:- a) uncontrolled in atom bomb b) Controlled in Nuclear reactors c) Auto catalytic reaction d) All of these

    35. Which of the following can pass through 20 cm thick steel? a)  particles b)  particles c)  rays d) none of these

  • 6 Physics

    36. Half life of radium is 1600 years. The fraction of the sample of radium that remains after 6400 years is

    a) 1 2 b)

    1 4

    c) 1 8 d)

    1 16

    37. In the following reaction X is 24 4 1

    12 2 14 0 XMg He Si n  

    a) 27 b) 28 c) 24 d) 20

    38. Which pair represents isobars

    a) 19 40

    18 40K and Ar

    b) 2 3

    2 4He and He

    c) 12 24

    12 25Mg and Mg

    d) 19 40

    20 41K and Ca

    39. 7N13 decays to 6C13 by emitting a a) proton b) electron c) neutron d) positron

    40. All nuclides exhibit radio activity when the atomic number exceeds: a) 80 b) 82 c) 90 d) 92

    Answers 1 d 2 c 3 c 4 b 5 c 6 d 7 b 8 a 9 c 10 a 11 c 12 a 13 c 14 a 15 b 16 c 17 c 18 a 19 a 20 c 21 a 22 d 23 b 24 c 25 c 26 b 27 c 28 a 29 a 30 b 31 c 32 d 33 d 34 d 35 c 36 d 37 a 38 a 39 d 40 b

  • Physics 7

    Multiple Choice Questions

    1. Three 3 ohm resistors are connected to form a triangle. The resistance between any two corners is : a) 6 b) 4/3 c) 3/4 d) 2

    2. The rate of flow of electric charge is defined as:- a) current b) Voltage c) Po

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