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Showing posts with label class10-physics. Show all posts
Showing posts with label class10-physics. Show all posts

# CBSE Class 10 Physics - Electricity (1 Mark Based Questions and Answers) Part-1

Q1: By what other name is the unit joule/coulomb called ?

Q2: Which of the following statements correctly defines a volt ?

(a) a volt is a joule per ampere.

(b) a volt is a joule per coulomb.

Answer: (b) a volt is a joule per coulomb.

Q3: (a) What do the letters p.d. stand for ?

(b) Which device is used to measure p.d. ?

(a) p.d. stands for potential difference.

(b) Voltmeter is used to measure p.d.  # Class 10 - SCIENCE - Question Bank - Very Short Answers Based Questions (Unsolved)

1. Why does not a wall immediately acquire a white colour when a coating of slaked lime is applied on it ?

2. Define displacement reaction with one example.

3. Identify the most reactive and least reactive metal : Al, K, Ca, Au.

4. Which of the following is a combination reaction and which is a displacement reaction ?

(a) Cl₂ + 2KI ——–> 2KCl + I₂

(b) 2K + Cl₂ ——–> 2KCl.

5. What is the difference between the following two reactions ?

(a) Mg + 2HCl ——–> MgCl2 + H2

(b) NaOH + HCl ——–> NaCl + H2O.

6. Identify the compound which is oxidised in the following reaction

H₂S + Br₂ ———–> 2HBr + S.

7. What happens chemically when quick lime is added to water ?  # Class 10 Physics - Electricity - Open Circuit vs Closed Circuit vs Short Circuit

Open Circuit

An open circuit implies that the two points are externally disconnected, which is equivalent to a resistance R = ∞ . This means that theoretically no current(I = 0) can flow between the two terminals, regardless of any value of potential difference ( V= 0 to ∞).  # Magnetic Effect of Electric Current - MCQs-2

CBSE Class 10 Physics

Buy Oswal Science Question Bank (For 2021 Examination)

Directions: Read the question carefully and choose the right option from the choices given.

Q1: The south pole of a freely suspended magnet points to the:

(a) Geographical south
(b) Geographical north
(c) Slightly left of geographical north
(d) None of these

Q2: For the current-carrying solenoid as shown below, at which point the field strength is maximum?

(a) At point A
(b) At point B
(c) At point C
(d) All of these  # Light (Reflection and Refraction) - Worksheet

CBSE Class 10 - Physics

Directions: Give one-word answer to the following questions (Q1 - Q10).

Q1:  Which property of light changes when it travels from one medium to another?

Q2: Name the ray of light that falls on a mirror.

Q3: How is focal length, (f) of a mirror related to its radius of curvature (R)?

Q4: What kind of beam of light comes out of a car headlight?

Q5: Which mirror forms an image with the following characteristics.
(a) Virtual (b) Erect (c) Same size as the object (d) Laterally inverted  ## CBSE Class 10 - Physics - Study Notes - MCQs, Worksheets, NCERT Solutions

Physics is a pivotal subject for students who wish to seek a career in engineering and other related fields. The majority of the ideas in class 10 Physics are significant as they build the foundations for senior-level physics that are taught in class eleventh and twelfth. Along these lines, having an intensive comprehension of the considerable number of ideas is pivotal to get higher marks in school tests as well as get acquainted with wide a range of information.

In this way, to assist the students with learning the subject more viably, physics notes for class 10 students are given here. These notes based on CBSE syllabus are all around organized, straightforward and spread all the significant points that students need to learn for the tests.

In addition, students can utilize the notes to not just ace in their assessment tests but are effecting in learning the important concepts. There are also 1 mark questions, MCQs and worksheets that will help students evaluate their knowledge about various topics. The notes are written in straightforward language and help students grasp basic concepts easily.

You can check out links to the study notes on various topics, exercises and chapters related to class 10 Physics are given below:  ## Science - MCQs

CBSE Class 10

Q1: Optical density of a medium depends on

(a) Density of the medium
(b) Thickness of the medium
(c) Velocity of light in that medium
(d) None of these

Q2: Which of the following is not a physical change?

(a) Boiling of water to give water vapour
(b) Melting of ice to give water
(c) Dissolution of salt in water
(d) Combustion of Liquefied Petroleum Gas (LPG)

Q3: Which of the following is correct about chromosomes?

(a) It is composed of DNA and lipids.
(b) It is composed of DNA and proteins.
(c) It is composed of DNA only.
(d) It is composed of RNA and proteins.  ## Magnetic Effects of Electric Current (Worksheet)

CBSE Class 10 - Physics

Fill in the blanks

1. The space around a magnet in which the force of attraction and repulsion due to the magnet can be detected is called the _____________.

2. Outside a bar magnet, the magnetic field lines tend to start from _______ pole  and reach ________ pole. Thus these field lines form _______ loops.

3. The region where the field lines are close together will have _______ magnetic field.

4. Is magnetic field a vector quantity? (Yes/No)  ## Understanding Spherical Mirrors

Class 10 - Physics - Chapter Light  ## Light (Spherical Mirrors) - Worksheet

Class 10 Physics

Fill in the blanks by opting either 'positive' or 'negative'

1. If an image is formed behind a concave mirror, the image distance (v) is __________.

2. If image is formed in front of a mirror, the image distance (v) is taken as ________.

3. The image distance (v) for concave mirror is considered ________.

4. The focal length of a concave mirror is considered _________.  ## Light - Image Formation By A Plane Mirror

(Q & A Part-3)
CBSE Class 10 - Physics  ## Chapter: Light - Reflection

Class 10 Physics  ## Chapter: Light (Q & A) Part-1Class 10 Physics  ## Electricity

MCQs (Set-2)

Q1: The rate of flow of an electric charge is known as:
(a) electric potential
(b) electric conductance
(c) electric current
(d) none of these

Q2: The SI unit of electric current is:
(a) ohm
(b) ampere
(c) volt

Q3: The instrument used for measuring electric current is:
(a) ammeter
(b) galvanometer
(c) voltmeter
(d) potentiometer  ## CHAPTER-12 ELECTRICITY

Q1: What is represented by joule/coulomb?

Q2: A charge of 2C moves between two plates, maintained at a p.d of 1V. What is the energy acquired by the charge?

Q3: Why are copper wires used as connecting wires?

Answer: The electrical resistivity of copper is low

Q4: A wire of resistivity 10 ohm meter is stretched to double its length. What is its new resistivity?

Answer: It remains same because resistivity depends on nature of material.

Q5: What is the resistance of connecting wire?

Answer: The resistance of a connecting wire, which is made of good conductor, is negligible.  # Physics: Important Discoveries

No. Discovery Scientist Year
1. Proton Rutherford 1919
3. Atom John Dalton 1808
4. Atomic Structure Neil Bohr & Rutherford 1913
7. Raman Effect CV. Raman 1928
8. X-Rays Roentgen 1895
9. Photoelectric effect Albert Einstein 1905
10. Periodic table Mendeleev 1888
11. Nuclear Reactor Anrico Fermi 1942
12. Wireless Telegram Marconi 1901
13. Dynamite Alfred Nobel 1867  ## Class 10 - Physics - 1 Mark Questions Asked in CBSE Examination Papers (Set-1)

Q1: Write the energy conversion that takes place in a hydropower plant.

Answer: Potential Energy ---> Kinetic Energy -----> Electrical Energy

Q2: If the image formed by a spherical mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it?

Q3: Which phenomenon is responsible for making the path of light visible?  ## Physics Quiz (1 Word Answer)

Q1: Who firstly demonstrated experimentally the existence of electromagnetic wave?

Q2: The working of the quartz crystal in the watch is based on which effect?

Q3: What is the unit of Radioactivity?

Q4: What is the wavelength of the visible spectrum?

Q5: One astronomical unit is the average distance between___?

Q6: Number of basic S.I. units are ___.

Q7: What is the name of the scientist who stated that matter can be converted into energy?

Q8: The size of the atomic nucleus is of the order of___?

Q9: A temperature at which both the Fahrenheit and the centigrade scales have the same value?  ## Friday, 5 October 2018

### CBSE Class 10 - Science - Chapter 14 - Sources Of Energy - Study Points (#eduvictors)(#cbsenotes)

Class 10 - Science - Chapter 14

## Sources Of Energy

Energy:
Whenever a body is capable of doing work, the body is said to possess energy. Thus energy is defined as the ability of a body to do work and the amount of energy possessed by a body is equal to the amount of work it can do when its energy is released.

Energy comes in different forms and one form can be converted to another. For example, if we drop a plate from a height, the potential energy of the plate is converted mostly to sound energy when it hits the ground.

A good source of energy should be:

i) Safe and convenient to use, e.g., nuclear energy can be used only by highly trained engineers with the help of nuclear power plants. It cannot be used for our household purposed.

ii) Easy to transport, e.g., coal, petrol, diesel, LPG etc. Have to be transported from the places of their production to the consumers.

iii) Easy to store, e.g., huge storage tanks are required to store petrol, diesel, LPG etc.  ## Electricity - Assignment Sheet

Very Short Q & A (1 marks each)

Q1: Define resistivity of material.

Q2: What is the power of torch bulb rated at 2.5V and 500mA?

Q3: Why series arrangement not used for connecting domestic electrical appliances in a circuit?

Q4: Which has higher resistance – a 50W bulb or a 2.5W bulb and how many times?

Q5: What is the direction of flow of conventional current?

Q6: Calculate the amount of charge flowing in a wire if it draws a current of 2A in 10 minutes

Q7: What happens to resistance of a conductor if area of cross-section is doubled?

Q8: Which device helps to maintain a potential difference across a conductor?

Q9: Find the number of electron in 1C of charge.

Q10: Name the physical quantity whose unit is V/A.

Q11: Name the device that helps to maintain a potential a potential difference across a conductor.  