CBSE > Class 12 > Physics | CBSE Board | Homework Help

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

Ask Question

Which one the carrier of charge in case of solid, liquid and gas write down the mechanism of current flow by deriving different velocity in a conductor .

Posted by Chandu Mandal 1 year, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What two differences between para ,dia and ferromagnetic materials,giveing one example for each

Posted by Punit Meena 1 year, 3 months ago

CBSE > Class 12 > Physics

1 answers

Shivansh Chaurasiya 1 year, 3 months ago

Ferromagnetic materials are strongly attracted to both poles of magnets. Paramagnetic materials are weakly attracted to a single pole. Diamagnetic materials repel both poles of magnet

0Thank You

ANSWER

Explain why? 1) 500 joules of work is done on a gas to reduce its volume by compression adiabatically.what is the change in internal energy of the gas?

Posted by Lakshmi Prasanna 1 year, 3 months ago

CBSE > Class 12 > Physics

1 answers

Rahul S 1 year, 3 months ago

In thermodynamics, the first law (which is essentially the law of conservation of energy) states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system on the surroundings. Mathematically, it is written as: ΔU = Q - W - ΔU is the change in internal energy of the system. - Q is the heat added to the system. - W is the work done by the system on its surroundings. For an adiabatic process, no heat is exchanged with the surroundings, which means Q = 0. Therefore, the equation simplifies to: ΔU = -W However, in this case, you are compressing the gas, meaning you are doing work on the gas, not the other way around. The sign convention for work in thermodynamics can be a bit counterintuitive: work done on the system is considered positive, and work done by the system is negative. Therefore, the work you've done on the gas, 500 joules, is positive from the perspective of the gas. So, for the gas being compressed adiabatically: W (on the gas) = 500 joules Therefore, the change in internal energy (ΔU) will be equal in magnitude but positive, since no heat is being added or removed: ΔU = 500 joules Thus, the internal energy of the gas increases by 500 joules. This increase in internal energy can result in an increase in temperature of the gas since the energy is not being used to do work by the gas or being lost as heat to the surroundings.

1Thank You

ANSWER

An a-particle is accelerated through a potential difference of 10 kV and moves along x-axis. It enters in a region of uniform magnetic field B = 2 × 10-3 T acting along y-axis. Find the radius of its path. (Take mass of a-particle = 6.4 x 10-27 kg

Posted by Nikita Kanoo 1 year, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Series RPH-DS1

Posted by Joyal Vattathil 4 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is kirchhoff law

Posted by Nikhil Sharma 1 year, 3 months ago

CBSE > Class 12 > Physics

1 answers

Ritika Singh 1 year, 3 months ago

Algebraic Sum of entering Current + Leaving Current. Kirchhoff's Current Law...

3Thank You

ANSWER

For Two Nichrome wires Connected In Series with A Battery How Does the ratio Of the Drift Velocity of electron In them Depend On their (i) length (ii) Diameter

Posted by Prashant Patel 1 year, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define binding energy

Posted by Sayanhik Maity 1 year, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Is motional EMF in Electromagnetic induction is deleted in 2023_24 CBSE board ??

Posted by Qudsiya Fatima 1 year, 3 months ago

CBSE > Class 12 > Physics

5 answers

.... ... 1 year, 3 months ago

0Thank You

Prince Mishra 1 year, 3 months ago

0Thank You

Nazia Kazmi 1 year, 3 months ago

1Thank You

Zafreen Batool 1 year, 3 months ago

1Thank You

Jiya Negi 1 year, 3 months ago

Noo

2Thank You

ANSWER

Electric field due to parallel plate capacitor.

Posted by Amit Pawaiya 1 year, 3 months ago

CBSE > Class 12 > Physics

1 answers

Neeraj Kumar 1 year, 3 months ago

Electric field .i.e. Enet of parallel plate capacitor is Sigma/E°

0Thank You

ANSWER

Electric field at axis

Posted by Krish Gupta 1 year, 3 months ago

CBSE > Class 12 > Physics

1 answers

Rahul Pant 1 year, 3 months ago

E=2kqr/(r^2-l^2)^2

2Thank You

ANSWER

What is magnetic field and electric field

Posted by Mahak Choudhary 1 year, 3 months ago

CBSE > Class 12 > Physics

2 answers

Zafreen Batool 1 year, 3 months ago

Simply : electric field :- the space around the electric effect cld E.field.& magnetic field:-the space around the magnetic effect cld M.field

0Thank You

Rahul Pant 1 year, 3 months ago

Magnetic field= a region around a magnetic material or a moving electric charge within which the force of magnetism acts. Electric field=a region around a charged particle or object within which a force would be exerted on other charged particles or objects.

5Thank You

ANSWER

Derivation of equation of compound microscope

Posted by Bala Murugan 1 year, 3 months ago

CBSE > Class 12 > Physics