No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

    • Posted by Singh Rajput 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 3 answers

    Komal Mehta 7 years, 2 months ago

    According to Doppler effect whenever there is a relative motion between a source of sound and the listener the frequency of sound received by the listener is different from the actual frequency of sound emitted by the source.

    1Thank You

    Yogita Ingle 7 years, 2 months ago

    • Doppler Effect is the phenomenon of motion-related frequency change.
    • Consider if a truck is coming from very far off location as it approaches near our house, the sound increases and when it passes our house the sound will be maximum. And when it goes away from our house sound decreases.
    • This effect is known as Doppler Effect.
    • A person who is observing is known as Observer and object from where the sound wave is getting generated it is known as Source.
    • When the observer and source come nearer to each other as a result waves get compressed. Therefore wavelength decreases and frequency increases.

    1Thank You

    Akanksha Kumari? 7 years, 2 months ago

    Effect caused by sudden change in pitch

    1Thank You

    ANSWER

    • Posted by Singh Rajput 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Gaurav Seth 7 years, 2 months ago

    Second law of thermodynamics

    The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The second law also states that the changes in the entropy in the universe can never be negative.

    Following are the statements of second law of thermodynamics:

    (i) All spontaneous process is irreversible in nature.

    (ii) The net entropy of the universe in any natural process always increases and tends to acquire maximum value.

    (iii) In reversible process, the sum of entropies of system and surrounding remains constant but in an irreversible the total entropy of the system and surrounding increases.

    1Thank You

    ANSWER

    • Posted by Surender Singh 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Sid Xavier 7 years, 2 months ago

    Range = usin2teeta/g

    1Thank You

    ANSWER

    • Posted by Sugam Sharma 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Archie Ghosh 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 3 answers

    Nishita Tomar 7 years, 2 months ago

    in physics we want to make the system work for us but when we have to work on the system it is taken negative and in chemistry we want to work on the system so it is taken as positive

    1Thank You

    Sugam Sharma 7 years, 2 months ago

    It is not compressio it is expansion

    0Thank You

    Sugam Sharma 5 years, 11 months ago

    No , in chemistry also work done is negative. In thermo-d if we find work done when gas is compressed it will comes out to be negative

    1Thank You

    ANSWER

    • Posted by Aniket Singh 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Sakiul Halim 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Ayushi Ayushi 7 years, 2 months ago

    its dimensional formula is [ML-1T-2].

    4Thank You

    ANSWER

    • Posted by Devansh Bhadana 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Ankit Aryan Shivan 7 years, 2 months ago

    The angle between tangent to the liquid surface at the point of contact and solid surface inside the liquid is said to be angle of contact. At the line of contact the surfaces force between the three medium must be in equilobrium. (If angle of contact theta < 90°→liquid drop spread over solid surface).(If angle of contact theta>90°→liquid drop will not spread over solid surface).

    1Thank You

    ANSWER

    • Posted by Naveen Kumar 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Akanksha Kumari? 7 years, 2 months ago

    It uses energy conservation and idea of internal energy,heat transfer and work done Mainly applicable for heat engine

    1Thank You

    ANSWER

    • Posted by Rutu Mer 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 2 answers

    Akanksha Kumari? 7 years, 2 months ago

    It state that when 2 sides of a triangle are represented as 2 vectors in magnitude and directions taken in same order then the 3rd side represents the resultant vector

    2Thank You

    Rutu Mer 7 years, 2 months ago

    Any one knows it!

    0Thank You

    ANSWER

    • Posted by Divya Tripathy 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Aakarsh Sharma 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Richa Tomar 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Tanmay Verma 7 years, 2 months ago

    Pata nhi

    1Thank You

    ANSWER

    • Posted by Kamalakanta Khatua 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 2 answers

    Sugam Sharma 7 years, 2 months ago

    Because the value of escape velocity<root mean square velocity of particles.

    0Thank You

    Niya Nath 7 years, 2 months ago

    The main reason is the low value of escape velocity of moon.

    Escape velocity of moon is the minimum speed required for an object to escape permanently from the gravitatational attraction of the moon.

    The escape velocity of moon is 2.38km/s. So, all the gases escape from the surface of the moon. Hence, the moon has no atmosphere.

     

    0Thank You

    ANSWER

    • Posted by Akash Choudhary Dav Gandhinagar 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Pooja Kumari 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Smreeti Biswas🤙🏻 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 2 answers

    Ankit Singh 7 years, 2 months ago

    Temperature

    4Thank You

    Akanksha Kumari? 7 years, 2 months ago

    Temperature

    2Thank You

    ANSWER

    • Posted by Nitu Goyal 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 2 answers

    Lily ☺ 7 years, 2 months ago

    Because of their thickness, or height. That is, a cloud gets thicker and denser as it gathers more water droplets and ice crystals — the thicker it gets, the more light it scatters, resulting in less light penetrating all the way through it. The particles on the underside of the rain cloud don't have a lot of light to scatter to your eyes, so the base appears gray as you look on from the ground below.

    1Thank You

    Harender Singh 7 years, 2 months ago

    because

    1Thank You

    ANSWER

    • Posted by Jyoti Vishwakarma 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Shaurya Jain 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Nitu Goyal 7 years, 2 months ago

    Search on Google

    2Thank You

    ANSWER

    • Posted by Adith K 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Akanksha Kumari? 7 years, 2 months ago

    Law of conservation: When net external torque =0 then total angular momentum is conserved i-e; L=0 Angular momentum initial =Angular momentum final

    2Thank You

    ANSWER

    • Posted by Ankit Aryan Shivan 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Sid Xavier 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Aman Thakur 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 2 answers

    Lavanya ❤️? 7 years, 2 months ago

    “Bernoulli's principle states that an increase in the velocity(v) of a fluid occurs simultaneously with a decrease in pressure(p) or a decrease in the fluid’s potential energy(gz) (where g=acceleration due to gravity,(z)or(h)=height ”.

    1Thank You

    Ankit Aryan Shivan 7 years, 2 months ago

    A/q to this theorem, In case of steady flow, non-viscous,incompresible flowing in a tube having non-uniform cross sectional area sum of ,K.E per unit volume and P.E per unit volume constant.

    1Thank You

    ANSWER

    • Posted by Priya Dharshini ? 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 5 answers

    Priya Dharshini ? 7 years, 2 months ago

    Actually this was my worksheet question. I dont have answer fot this. Thanks for ur ans

    1Thank You

    Ankit Singh 7 years, 2 months ago

    Hope this will help u if any wrong then tell me

    1Thank You

    Ankit Singh 7 years, 2 months ago

    What is the answer given in your book

    1Thank You

    Ankit Singh 7 years, 2 months ago

    20 time ×10 J = 2.0 compression

    1Thank You

    Priya Dharshini ? 7 years, 2 months ago

    Any one there in online ? Try to solve this question. I need it fasstt

    1Thank You

    ANSWER

    • Posted by Asif Ansari 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 0 answers
    ANSWER

    • Posted by Shashank Singh 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Lavanya ❤️? 7 years, 2 months ago

    The angle between the tangent at the liquid surface at the point of contact and the solid surface inside the liquid is called the angle of contact for a given pair of solid and liquid. It is represented by θ

    1Thank You

    ANSWER

    • Posted by Saba Elias 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 3 answers

    Ankit Singh 7 years, 2 months ago

    Photon

    1Thank You

    Lavanya ❤️? 7 years, 2 months ago

    During 19th century light was considered to be a stream of particles called photon

    0Thank You

    Gopal Ji Mishra 7 years, 2 months ago

    photon

    0Thank You

    ANSWER

    • Posted by Saba Elias 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Lavanya ❤️? 7 years, 2 months ago

    The visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc

    1Thank You

    ANSWER

    • Posted by Nandan Kumar 7 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Akanksha Kumari? 7 years, 2 months ago

    R = 11cm N =7 rev/sec A/Q W=2× 22/7 × n = 2×22/7 ×7 =44rad/sec V=wr V=44×11/100 =48.84 m/sec

    2Thank You

    ANSWER

    myCBSEguide App

    myCBSEguide

    Trusted by 1 Crore+ Students

    Install Now

    Test Generator

    Test Generator

    Create papers online. It's FREE.

    Try Now

    CUET Mock Tests

    CUET Mock Tests

    75,000+ questions to practice only on myCBSEguide app

    Install Now
    Google Play

    Download myCBSEguide App

    All Courses

    Other Websites

    CBSE Courses

    Resources

    Corporate

    NCERT Solutions

    CBSE Sample Papers

    All Content and Intellectual Property is under Copyright Protection | myCBSEguide.com ©2007-2026