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Punjab (PTB) · Quarter book test · Free

10th Class Physics 2nd Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: CHAP 13: SOUND, CHAP 14: LIGHT, CHAP 15: ELECTROSTATICS.

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10th Class Physics 2nd Quarter Book Paper

10th Class · Physics · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 40Time: 1 hour

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

  1. Which of the following material has the highest refractive index?

    1. Water

    2. Glass

    3. Diamond

    4. Ice

  2. Which of the following is required for sound to travel?

    1. A vacuum

    2. A medium

    3. Darkness

    4. Magnetic field

  3. What is the fundamental rule of electrostatics regarding charges?

    1. Like charges attract, opposite charges repel

    2. Like charges repel, opposite charges attract

    3. All charges always attract each other

    4. Charges have no effect on each other

  4. When an incident ray strikes the prism at point E, it bends:

    1. Away from the normal

    2. Towards the normal

    3. Backwards

    4. It does not bend

  5. When we speak, which part of our body vibrates to produce sound waves?

    1. Eardrums

    2. Vocal cords

    3. Lungs

    4. Tongue

  6. Electrical breakdown is:

    1. The process of ionizing a gas due to a strong electric field

    2. The process of neutralizing a charged object

    3. The process of charging an insulator

    4. The process of discharging a conductor

  7. Bandwidth refers to:

    1. The length of a cable

    2. How much data can be sent over a network per second

    3. The speed of an electrical signal

    4. The thickness of a wire

  8. Loudness is primarily determined by the ...... of the vibrating body:

    1. Frequency

    2. Wavelength

    3. Amplitude

    4. Speed

  9. In insulators electrons are:

    1. Free to move

    2. Tightly bound to their atoms

    3. Completely absent

    4. Flowing like water

  10. The straight imaginary line passing thorugh the center of lens is called the:

    1. Focal length

    2. Principal axis

    3. Optical center

    4. Normal

  11. To hear a distinct echo, the reflected sound must reach us after at least:

    1. 0.01 seconds

    2. 0.1 seconds

    3. 1.0 seconds

    4. 0.5 seconds

  12. The electric field between two large, closely spaced, oppositely charged parallel plates is:

    1. Non-uniform

    2. Uniform

    3. Zero everywhere

    4. Circular

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

  1. What is meant by the longitudinal nature of sound waves?

  2. How does a lightning rod safeguard a building and its occupants?

  3. Why does light change direction when it passes from one medium to another?

  4. Does sound wave show reflection?

  5. What happens when like charges and unlike charges are brought close to each other?

  6. What is hypermetropia.

  7. Why do voices of men sound deeper than those of women or children, even when they are speaking at the same intensity? Explain using the relationship between frequency and pitch.

  8. What is meant by a uniform electric field, and where is it commonly observed?

  9. Define short sightedness (myopia).

  10. What happens to the sound of the bell inside a bell jar when air is pumped out? What does it prove?

  11. Briefly explain the phenomenon of "Corona Discharge" mentioned in the text.

  12. Define refractive index. What is the refractive index of air and water?

Q3. Long questions (Attempt any 3 of 4 · 3 × 4 = 12)

  1. Describe the method charging bodies by induction and earthing.

  2. Find the image position of an object in a plane mirror with the help of an activity.

  3. Describe how sound propagates through a medium as a wave?

  4. A positive test charge of is placed in an electric field. The force on it is 0.500 N. What is the magnitude of the electric field at location of the test charge.