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

The high positive charge in the nucleus, the α-particle will be repelled by the more force than that nucleus of less change. Rutherford calculate the number of α-particles that are scattered at a certain angle and range is proportional to the square of positive charge in the metal and nucleus.

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Reflection and refraction using wave front... please suggest me how I create project file on this topic in 20 pages... please ??????

Posted by Aryan Chandra 4 years ago

CBSE > Class 12 > Physics

2 answers

Aseem Mahajan 4 years ago

And then thr explanation of reflection and refraction by wave theory

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Aseem Mahajan 4 years ago

You can tell the wave theory and experiments which led to discovery of wave nature. Famous experiment like double slit experiment

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How to distinguish between unpolarised and polarised light by using Polaroid

Posted by Yashika Patidar 4 years ago

CBSE > Class 12 > Physics

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Two identical charged sphere each of mass 5 gm are suspended by thread from a common point calculate the charge and each sphere if an angle between is 90 degree and the seperation between them 50 cm

Posted by Devendra Kumar 4 years ago

CBSE > Class 12 > Physics

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Questions from EM wave

Posted by Mukesh Isharwal 4 years ago

CBSE > Class 12 > Physics

0 answers

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How can i identified that image is real,inverted,virtual and erect?

Posted by Akshay Singh 4 years ago

CBSE > Class 12 > Physics

1 answers

Aryan Singh 4 years ago

When the image is on the side of the object and distance is positive then the image is real and inverted. When the image is behind the mirror and the distance is negative then image is said to be virtual and erect

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Name two physical conductors upon which resistance of a conductor depends?

Posted by Ujiraj Brahma 4 years ago

CBSE > Class 12 > Physics

1 answers

Neelam Narwal 4 years ago

Ans - (1) Temperature. (2) Cross-sectional area . (3) Length.

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The bob of a simple pendulum of mass 10gm is being routed vertically with the help of a thread. If at any one time the bob makes an angle of 10 সঙ্গে with the line, the tension of the yarn is 0.1 N, what will be the success of the tension? There is no increase in the length of the thread.

Posted by Pritam Das 4 years ago

CBSE > Class 12 > Physics

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When light of two colour A & B is passed through a plane boundry A is bent more than B Which colour travel more slowly in the second medium

Posted by Kanakpal Panwar 4 years ago

CBSE > Class 12 > Physics

1 answers

Neelam Narwal 4 years ago

Ans - A colour travels more slowly than colour B because colour A bends and scatters more than colur B.

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Bhai koi ff kheleta h

Posted by Ranger King 4 years ago

CBSE > Class 12 > Physics

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https://cbseacademic.nic.in/SQP_CLASSX_2021-22.html

Posted by Ranger King 4 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Ranger King 4 years, 1 month ago

Welcome bhai??

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Royal Thakur 4 years, 1 month ago

Thanks for info....

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Ranger King 4 years, 1 month ago

Sample paper release link

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Ranger King 4 years, 1 month ago

https://cbseacademic.nic.in/SQP_CLASSX_2021-22.html

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Who was Lucifer ?

Posted by Aseem Mahajan 4 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Aseem Mahajan 3 years, 9 months ago

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Tec Om 4 years ago

Bhai ravan dekhle para chal jayega ???

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Lucifer??Morningstar?? . 4 years, 1 month ago

Tumne mujhe yaad Kiya,batao kisliye??

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Kritika Singh 4 years, 1 month ago

We don't know ?

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Royal Thakur 4 years, 1 month ago

Don't know..

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Anyone clear my doubt. How power is related to resistance?

Posted by Sanket Arjun 4 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ganesan Sankar 4 years, 1 month ago

For transmission and production,it is i²R otherwise it is V²/R

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Lenj low

Posted by Neha Kumaari 4 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Priyanshu Kumar 4 years ago

Lenz low is very descriptive, if you want to know meet me offline..?

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Lucifer??Morningstar?? . 4 years, 1 month ago

The current induced in a circuit due to a change in a magnetic field is directed to oppose the change in flux . And it shows direction of Emf.

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Neha Kumaari 4 years, 1 month ago

Lenz low

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Focal length of convex mirror m1 is 20cm and that of concave mirror m2 is 30cm. Find the position of second image I2 take first reflection from m1??

Posted by Riya Verma 4 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sanket Arjun 4 years, 1 month ago

V=-120 cm

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Galvanometer and shunt and it's uses

Posted by Pal Manish 4 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Ganesan Sankar 4 years, 1 month ago

Galvanometer is to detect small current

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Lucifer??Morningstar?? . 4 years, 1 month ago

Shunt(low resistance) connected in parallel with galvanometer to change into ammeter

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Please give me formulas of electromagnetic waves

Posted by Adarsh Chauhan 4 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pal Manish 4 years, 1 month ago

There are many formulas so which one you want please type the topic

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what is absolute refractive index? On what factor does it depend?

Posted by Abhishek Sharma 4 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Parneet Kaur 4 years, 1 month ago

The absolute refractive index of a medium is defined as the ratio of speed of light in vacuum to the speed of light in a medium. n=c/v Factors affecting the absolute refractive index are: 1. Wave length of incident light 2. Temperature 3. Density of medium.

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A plane electromagnetic wave travels in vacuum along x-direction. What can you say about the direction of electric and magnetic field vectors? Do electromagnetic waves carry energy and momentum?

Posted by S Santhoshxib 4 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Pratham Mishra 4 years, 1 month ago

A for electromagnetic wave travelling in a vacuum along X direction, then electrical field oscillated along y axis and magnetic field ocellated along z axis. Yes electromagnetic waves carry energy-momentum.

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विद्युत धारा किसे कहते है

Posted by Parmwshwar Nishad 4 years, 1 month ago

CBSE > Class 12 > Physics