Skip to content
p.paperbanao.
Continue

Punjab (PTB) · Full book test (board pattern) · Free

1st Year Physics Full Book Paper

85 marks · 3 hours · 55 questions. Covers: 12 chapters (CHAP 1: Measurements to CHAP 12: Nuclear and Particle Physics).

Your school name

1st Year Physics Full Book Paper

1st Year · Physics · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 85Time: 3 hours

Q1. Multiple choice questions (Attempt all · 17 × 1 = 17)

  1. If fingers of right hand show the direction of magnetic field and palm shows the direction of force, then thumb points for:

    1. Torque

    2. Voltage

    3. Current

    4. Inducted

  2. Which of the following is a derived quantity?

    1. Force

    2. Mass

    3. Length

    4. Time

  3. A frame of reference that is accelerating w.r.t. an inertial frame is called:

    1. Inertial

    2. Stationary

    3. Non-inertial

    4. Rotational

  4. The quantity which remains constant in the equation of continuity is:

    1. Volume

    2. Mass flow rate

    3. Pressure

    4. Area

  5. If cross product of two vectors x points along positive z-axis, then the vectors  and  must lie in:

    1. yz-plane

    2. xz-plane

    3. zy-plane

    4. No plane

  6. The resistance of an LDR:

    1. Increases with increase in light intensity

    2. Decreases with decrease in light intensity

    3. Remains constant regardless of light

    4. First increases then decreases

  7. Malu's law deal with:

    1. Intensity of reflected light

    2. Intensity of polarized light passing through an analyzer

    3. Frequency of light

    4. Wavelength of polarized light

  8. The anti-particle of electron is:

    1. Proton

    2. Positron

    3. Neutrino

    4. Anti-proton

  9. In the superposition of waves, interference is said to be constructive when the waves:

    1. Are of different types

    2. Are exactly out of phase

    3. Arrive at a point with crest meeting crest

    4. Travel in opposite directions

  10. Work has dimensions like:

    1. Torque

    2. Momentum

    3. Velocity

    4. Power

  11. Which quantity of the following is dimensionless?

    1. Angular velocity

    2. Angular acceleration

    3. Centripetal force

    4. Angular displacement

  12. At constant temperature, the kinetic theory of gases leads to:

    1. Boyle's law

    2. Charles law

    3. Avogadro's law

    4. Joseph Lussat's law

  13. Which force balance the magnetic attraction to prevent ferrofluids from settling?

    1. Buoyant force

    2. Brownian motion

    3. Electrostatic repulsion

    4. Gravitational pull

  14. Which is the base quantity?

    1. Area

    2. Volume

    3. Length

    4. Density

  15. The concept of space-time combines:

    1. Space and gravity

    2. Mass and velocity

    3. Space and time into a four-dimensional continuum

    4. Time and space

  16. The upthrust acting on a floating object is equal to:

    1. Volume of the object

    2. Density of the fluid

    3. Weight of the object

    4. Volume of water displaced

  17. When an object is in free fall, what force is acting on it (Neglecting air resistance)?

    1. Frictional force

    2. Magnetic force

    3. Gravitational force

    4. Electric force

Q2. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

  1. Is work done by a variable force always positive?

  2. Differentiate between dimensional and non-dimensional constant.

  3. What is thrust?

  4. Banked tracks are needed for turns on higway. why?

  5. A ball of mass m is held at a height h1 above a table. The table top is at a height h2 above the floor. One student says that the ball has potential energy mgh 1 but another says that it is mg (h1+h2). Whi is correct?

  6. How uncertainty can be reduced in a timing experiment?

  7. Can a vector have a component greater than the vector's magnitude?

  8. What is weightlessness?

  9. A body is being raised to a height H from surface of the Earth. What is the sign of work done by both (body and the Earth)? Justify.

  10. How many nano seconds in 1 year?

  11. Describe the circumstances for which velocity and acceleration of a vehicle are: (i) v is zero but a is not zero, (ii) a is zero but v is not zero. (iii) perpendicular to one another.

  12. Mass is a measure of inertia in linear motion. What is its analogue in rotational motion? Describe briefly.

Q3. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

  1. Explain how thermodynamics applies to biological systems, such as human body.

  2. What are the factors which speed of sound in air depends?

  3. What is plane polarized light?

  4. Does velocity remain constant along a streamline in steady flow?

  5. A gas is expanding adiabatically. Explain what happens to temperature and pressure of the gas.

  6. What is coherent light?

  7. What are the applications of Brewster's angle?

  8. How does pressure changes with depth in fluids?

  9. Give two examples of adiabatic process.

  10. Is it possible for two identical waves travelling in the same direction along a strin to give rise to a stationary wave?

  11. Write down some applications of plane polarized.

  12. When pure water fall on a flat glass plate. It spread on the plate while mercury. when falls on the same plate gets converted into small globules. why?

Q4. Short questions (Attempt any 6 of 9 · 6 × 2 = 12)

  1. What are the two postulates of special theory of relativity?

  2. What is meant by zero electric potential?

  3. What is the effect of beta plus decay on the nucleus?

  4. Is it possible to change both the area of the loop and the magnetic field passing through the loop and still not have an induced emf in the loop? Give reason.

  5. Can an object with mass travel at the speed of light?

  6. What factors affect the resistivity of a meterial?

  7. State the role of Higgs Boson in the generation of mass in modern physics theories.

  8. How does Lenz' law obey the law of conservation of energy?

  9. What is a relative motion?

Q5. Long questions (Attempt any 3 of 5 · 3 × 8 = 24)

  1. What is relative motion? How does it differ from absolute motion? Explain.

  2. Average intensity of sunlight on the surface of the Earth is nearly 500 W m-². Determine the amount of energy that falls on a solar panel having an area of 0.5 m2 in four hours.

  3. We wish to use a glass plate of refractive index of 1.5 in air as a polarizer. Find the polarizing angle and angle of refraction.

  4. Describe four fundamental forces in nature.

  5. Explain how do P.E and K.E are inter-convertable.