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Is derivation of magnification of telescope in syllabus?

Posted by Sandra Suresh 7 years ago

CBSE > Class 12 > Physics

1 answers

Hardik Sharma 7 years ago

Yes

ANSWER

Best of luck for the paper friends. Just give your best. Good night.

Posted by Utsav Aryan 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Is potentiometer and metre bridge is important

Posted by Akash Joshi 7 years ago

CBSE > Class 12 > Physics

1 answers

Utsav Aryan 7 years ago

Yes. Definitely, a question is asked from thatm

ANSWER

Two polaroid are setting crossedpositions a third polaroid is placed between the two making an angle theta with the pass axis of the first polaroid write the expression of the intensity of the light transmitted from second polaroid in what orientation will the transmitted intensity will be minimum and maximum

Posted by Namisha Khurana 7 years ago

CBSE > Class 12 > Physics

1 answers

Gaurav Seth 7 years ago

Question) Two polaroids are set in crossed positions. A third polaroid is placed between the two making an angle θθ=30⁰ with the pass axis of the first polaroid. Write the expression of the intensity of light transmitted from the second polaroid if I₀ is the intensity of the light incident of the first polaroid. In what orientations of third polaroid will the transmitted intensity be (i) minimum and (ii) maximum?

Answer:

ANSWER

Graph between EMF and internal resistance

Posted by Namisha Khurana 7 years ago

CBSE > Class 12 > Physics

1 answers

Gaurav Seth 7 years ago

he relation between V and I is given by,

V = E – Ir

Thus, the graph between V and I is as shown below:

Emf is given by the intercept on the vertical axis i.e., the V axis.

Internal resistance is given by the slope of the line i.e.. slope of V vs. I graph.

ANSWER

How's the preparation????

Posted by Pooja Bhatia 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the difference between electric feild and electric feild intensity

Posted by Nilesh Yadav 4 years, 8 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 8 months ago

The Basic Difference between electric field and electric field intensity is that, The electric field is a region around a charge in which it exerts an electrostatic force on other charges. While the strength of the electric field at any point in space is called electric field intensity.

ANSWER

Properties of charge - conservation and quantisation

Posted by Chintu Rao 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Prove snell law

Posted by Vijay4 Bisht 7 years ago

CBSE > Class 12 > Physics

2 answers

Pooja Bhatia 7 years ago

Derivation not in course

Pulkit Tushir 7 years ago

Sin i upon sin r

ANSWER

What is Critical angle ?

Posted by Sougata Mondal 7 years ago

CBSE > Class 12 > Physics

1 answers

Sonali Roy 7 years ago

When ray of light is travelling frm denser to rarer medium thn the angle of incidence fr which angle of refraction becoms 90° is called critical angle.

ANSWER

Coulomb's law

Posted by Shoaib Sheikh 7 years ago

CBSE > Class 12 > Physics

1 answers

Sonali Roy 7 years ago

Force of attraction or repulsion btween two charges is drctly prprtional to the product of magnitude of charges nd inversely prprtinal to the square of distnc between thm.

ANSWER

A convex lens of focal length 10 cm is placed coaxially 5 cm away from a concave lens of focal length 10 cm. If an object is placed 30 cm in front of the convex lens. Find the position of the final image formed by the combined system. [All India 2009]

Posted by Shiva Production 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

If n drop of same size each having same charge then combined to form a bigger drop .how will the follwing vary wrt single drop 1 ) potential on bigger drop 2) capacitance 3) total charge on bigger drop

Posted by Shruti Maurya 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Transistor as an amplifier is imp. topic???

Posted by Anjali Sharma 7 years ago

CBSE > Class 12 > Physics

3 answers

Jewel Maria 7 years ago

yes

Amatullah Bohra 7 years ago

Yes it is an important topic

Gudiya Yadav 7 years ago

Not much

ANSWER

What is superposition principle??

Posted by Nishant Shukla 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

The following particle are moving with same velocity. The particle with maximum De broglie wave length is 1-electron 2-proton 3- neutron 4- alpha particle

Posted by Utkal Pal 7 years ago

CBSE > Class 12 > Physics

2 answers

Ritanshu Dhiman 7 years ago

Momentum=p^2\2m then put p=h/lambda

Gudiya Yadav 7 years ago

Electron Wavelength inversly proportional to mass

ANSWER

I have not started anything. What should i do now??

Posted by Moti Satapathy 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

ampheres circuit law ?can anyone explain in a easy way

Posted by Jewel Maria 7 years ago

CBSE > Class 12 > Physics

1 answers

Gudiya Yadav 7 years ago

Line integral of magnetic field for closed loop is equal to unote times current flowing inside the conductor

ANSWER

Two points charge q1&q2 of magnitude 10^-8 &10-8.....?

Posted by Bornali Boro 7 years ago

CBSE > Class 12 > Physics

1 answers

Suhani Rana? 7 years ago

????

ANSWER

AC dc generator

Posted by Kriti Singh 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Uses of gamma rays

Posted by Jessel Martin 7 years ago

CBSE > Class 12 > Physics

1 answers

Gudiya Yadav 7 years ago

Use for treatment of cancer and tumor 2. As a food preservation by killing pathogenic microorganisms

ANSWER

What is the cause of displacement current

Posted by Bem Laishram 7 years ago

CBSE > Class 12 > Physics

1 answers

Divyanshu Balaiwar 7 years ago

Time varying electric field

ANSWER

What is the cause of displacement current?

Posted by Bem Laishram 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derive the expression for the electric potential at any point p,at distance r from the centre of an eletric dipole,making angle lapha with its axis

Posted by Designer Khushi 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Describe briefly how the davisson germer experiment demonstrated the wave nature of electrons

Posted by Himanshu Chauhan 7 years ago

CBSE > Class 12 > Physics

1 answers

Harsha Phansalkar 7 years ago

There calculations were nearly equal to de broglies wave length

ANSWER

how many of u have failed the preboard physics exam?

Posted by Jewel Maria 7 years ago

CBSE > Class 12 > Physics

1 answers

Jewel Maria 7 years ago

no one will say it...even if they fail.

ANSWER

do i need to pass for theory and practical separately? or jst 33for both of them?

Posted by Jewel Maria 7 years ago

CBSE > Class 12 > Physics

3 answers

Jewel Maria 7 years ago

thx avani.

Avani Trivedi 7 years ago

Do theory it's about 23 marks and derivation both with help you to get almost 55 marks

Utsav Aryan 7 years ago

Separately.. 23 marks is required to pass in theory.

ANSWER

Imp.topics of dual nature of matter and radiation??

Posted by Sunita Rastogi 7 years ago

CBSE > Class 12 > Physics

1 answers

Amatullah Bohra 7 years ago

Learn all the formulas As i numerical ques from chapter is confirm

ANSWER

Pdf for important questions of physics

Posted by Nishi Gautam 7 years ago

CBSE > Class 12 > Physics

2 answers

Avani Trivedi 7 years ago

Read aman dattarval PDF will help you

Utsav Aryan 7 years ago

We have been issued by our school and it's on A4 paper but not in pdf . So sorry

ANSWER

Whether physics exam will be easier than we think i am just getting panic of it!!!??

Posted by Jayaasrii?? Jayaasrii 7 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

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