Podcast
Questions and Answers
Which statement about the refractive indices of rays P, Q, and R is true?
Which statement about the refractive indices of rays P, Q, and R is true?
The angle of deviation of a prism primarily depends on which factors?
The angle of deviation of a prism primarily depends on which factors?
Which statement correctly describes the relationship between specific heat capacity and temperature change?
Which statement correctly describes the relationship between specific heat capacity and temperature change?
To successfully catch a fish swimming in water, where should the hunter aim?
To successfully catch a fish swimming in water, where should the hunter aim?
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What is the primary reason for the observed temperature being lower than expected when mixing hot and cold water?
What is the primary reason for the observed temperature being lower than expected when mixing hot and cold water?
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What would the sky look like on a planet without an atmosphere?
What would the sky look like on a planet without an atmosphere?
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Which of the following properties do both reflection and refraction exhibit?
Which of the following properties do both reflection and refraction exhibit?
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If two pieces of ice are supplied the same amount of energy, what determines which will rise in temperature faster?
If two pieces of ice are supplied the same amount of energy, what determines which will rise in temperature faster?
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In calorimetry experiments, the accuracy of temperature equalization can be affected by which factor?
In calorimetry experiments, the accuracy of temperature equalization can be affected by which factor?
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If the angle of incidence increases, how does this affect the angle of refraction in a prism?
If the angle of incidence increases, how does this affect the angle of refraction in a prism?
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What is the principle that explains why the sky looks blue on Earth?
What is the principle that explains why the sky looks blue on Earth?
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What would happen to the temperature of water if heat is gained without a change in state?
What would happen to the temperature of water if heat is gained without a change in state?
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Which of the following best describes how light behaves as it travels from air into a more dense medium?
Which of the following best describes how light behaves as it travels from air into a more dense medium?
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When combining lenses to correct vision, which lens property is most critical?
When combining lenses to correct vision, which lens property is most critical?
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What is the effect of specific latent heat on temperature when a substance is undergoing a phase change?
What is the effect of specific latent heat on temperature when a substance is undergoing a phase change?
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Which of the following defines 'specific heat capacity' accurately?
Which of the following defines 'specific heat capacity' accurately?
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In order to produce the highest note on a flute, which hole should the air be blown out of?
In order to produce the highest note on a flute, which hole should the air be blown out of?
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Which statement accurately describes the speed comparison between radio waves and visible light waves?
Which statement accurately describes the speed comparison between radio waves and visible light waves?
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Which of the following correctly arranges the electromagnetic spectrum in decreasing order of wavelength?
Which of the following correctly arranges the electromagnetic spectrum in decreasing order of wavelength?
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What type of wave is known for its ability to kill harmful bacteria and can also cause skin cancer?
What type of wave is known for its ability to kill harmful bacteria and can also cause skin cancer?
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Why is a quartz prism preferred over a glass prism for producing a UV spectrum?
Why is a quartz prism preferred over a glass prism for producing a UV spectrum?
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Which of the following statements is universally true about electromagnetic waves?
Which of the following statements is universally true about electromagnetic waves?
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Which option describes the effect of increasing the water level in Dinesh's experiment on the pitch produced?
Which option describes the effect of increasing the water level in Dinesh's experiment on the pitch produced?
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What does the ultraviolet radiation help the body produce?
What does the ultraviolet radiation help the body produce?
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Study Notes
Physics Exam - Class 10
- Total Questions: 50
- Instructions: All questions are compulsory
- Fill in the circle of the correct answer with a pencil. Do not tick or circle options.
- Show working on a separate sheet if needed.
- Check answers carefully before submitting as changes cannot be made after submission
Resistors in Parallel Combination
- The potential difference across resistors is the same.
- The equivalent resistance is less than the smallest resistance.
- The current flowing through each resistor is not the same.
Electrical Quantities and the Cell
- EMF (E) is the electromotive force of the cell
- V is the terminal voltage
- v is the voltage drop of the cell
- The correct relation is v = E - V
Electrical Bulbs
- A car headlight bulb marked 48 W 12 V can be used at home, but it will glow less brightly.
Simple Machines (Levers)
- A wheelbarrow is a class 1 lever.
- Other examples of class 1 levers include nodding of the head, raising weights on toes, and raising a load using the forearm.
Simple Pulley System
- A block and tackle system with 3 pulleys can lift a 25 kg load with an effort of 50 N.
- The mechanical advantage is 50.
Role of Pulley in Lifting
- A pulley can change the direction of force needed to lift a load or reduce force required.
Sound Waves and the Siren
- The pitch of a siren will increase as the vehicle approaches an observer.
- The volume of the sound may decrease or remain the same depending on the specific circumstances
Speed of Sound in Different Media
- The speed of sound in fluid P is 1600 m/s.
- If it takes 5 seconds to travel the same distance in Fluid M, then the speed of sound in fluid M is 3200 m/s.
Types of Waves and the Slinky
- A slinky can be used to demonstrate both longitudinal and transverse waves.
- It also shows mechanical waves.
Notes Produced by a Flute
- The smallest hole in the flute will produce the highest frequency note.
Electromagnetic Spectrum
- The electromagnetic spectrum, arranged in decreasing order of wavelength, is radio waves, microwaves, infrared radiations, and X-rays
Harmful Effects of Radiation, and the Different Kinds of radiation
- Gamma rays and ultraviolet rays can cause skin cancer.
- Gamma rays, X-rays, and beta radiations have varying consequences on the human body, ranging from no effect (short-term X-rays) to causing harm to biological components (Diana: neutron radiations, Hari: DNA and RNA alteration).
Radioactive Decay
- A radioactive element X that undergoes decay by emitting a gamma particle is represented as X (A-0, Z-0).
Specific Heat Capacity, Heat Transfer and Temperature Changes in Water
- The specific heat capacity of water affects how much temperature will change when equal amounts of heat are applied.
- A given amount of energy will lead a smaller temperature change if the specific heat capacity of the substance is higher.
Calorimetry - Determining Temperature
- The principle of calorimetry states that the amount of heat lost by one substance during a temperature change is equal to the heat gained by another substance.
- Loss of heat to the surroundings leads to lower than expected changes in temperature
Convex Lenses, and Their Associated Properties
- The focal length of a convex lens determines its power. A shorter focal length, results in higher power.
- Focal length of converging lenses used by Shashank is either -33 cm or +25 cm.
Situations Involving Centre of Gravity and Stability of Objects
- An object's centre of gravity is the point where the complete weight is concentrated.
- An object is stable if a vertical line descending from its centre of gravity extends through the object's base.
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Description
Test your knowledge on core physics concepts in Class 10. This quiz covers topics such as resistors in parallel, electrical quantities, and simple machines. Make sure to understand the principles and equations as you answer each question.
