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

I found it for 75 kg electron on Google~ Mass of 1 e-(m) = 9.11*10^-31 kg charge on 1 e- = 1.6*10^-19 c total mass (M) = 75 kg so, total charge (Q) = M*q/m = 75*1.6*10^-19/9.11*10^-31 =1.32*10^13 C

1Thank You

Naman Patidar 7 years, 11 months ago

Same as that on an electron that is ,, 1.6 × 10^-19

2Thank You

ANSWER

What do mean by alternating current AC.

Posted by Harbati Yadev 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Saif Ansari 7 years, 11 months ago

The current which in a random motion is known as A.C

2Thank You

ANSWER

Can RMS value of ac depends upon chemical effects of current ?If no. Explain breifly

Posted by Pari Aggarwal 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Principle of working of potentiometer

Posted by Shruti Mangal 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Suman Kanjilal 7 years, 11 months ago

potential drop across a portion of wire is directly proptional to the length of portion of the wire,when uniform current flows through wire

2Thank You

Ankita Nayak 7 years, 11 months ago

Principle is wheatsone bridge

3Thank You

ANSWER

plzzz tell me 16 ko practical kes sub ka h

Posted by Nitika Thakur 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Saif Ansari 7 years, 11 months ago

I think chen.

0Thank You

Ankita Nayak 7 years, 11 months ago

Yes ,we all have same date for practical exam as per CBSE

1Thank You

ANSWER

SI unit of electric flux

Posted by Shruti Mangal 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Sandeep Sharma 7 years, 11 months ago

Nm^2/C

3Thank You

Nitin Murali 7 years, 11 months ago

N/Cm^2

1Thank You

ANSWER

Which is more important theory or numericals? Can I score good marks only by memorizing theories in phy?

Posted by Prachi K 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Ankita Nayak 7 years, 11 months ago

Of course theory is helpful for getting good marks

2Thank You

Nabarun Ray 7 years, 11 months ago

Theory . Yes you can

2Thank You

ANSWER

Explain the principle on which A.C. generator works... If anyone can explain it by diagram...please explain it [email protected] or WhatsApp me at +918400579046..just for help!!!I really appreciate it.

Posted by Rohan Rai 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Chinkee Jaatrana 7 years, 11 months ago

Electromagnetic induction k principle par

1Thank You

ANSWER

Relationship between angle of incidence angle of prism and angle of minimum deviations from a triangular prism ?

Posted by Anusurya Rajawat 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Prachi K 7 years, 11 months ago

Angle of deviation=2×angle of incidence -- angle of prism

3Thank You

ANSWER

can you tell me chapter wise.....how many number of per chapter is

Posted by Jackson Negi 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Chinkee Jaatrana 7 years, 11 months ago

Chp 1-2 carry 8 marks Chp 3 carry 7 marks Chp 4-5 carry 8 marks Chp 6-7 carry 8 marks Chp 8 carry 3 marks Chp 9-10 carry 14 marks Chp 11 carry 4 marks Chp 12-13 carry 6 marks Chp 14 carry 7 marks Chp 15 carry 5 marks

3Thank You

ANSWER

All pre board question

Posted by Ziya Khan 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Rhitika Rai 7 years, 11 months ago

Kha h

1Thank You

Annapurna Mishra 7 years, 11 months ago

This type of question are available in this app

1Thank You

ANSWER

Telescope arrangement name

Posted by Shivanshu Yadav 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

practials datesheet 12

Posted by Nitika Thakur 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Si unit of dipole moment

Posted by Shivanshu Yadav 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Saif Ansari 7 years, 11 months ago

C-m

1Thank You

Vedant Bhamare 7 years, 11 months ago

Coulomb - meter

3Thank You

ANSWER

S.i unit of work

Posted by Sameer Sagar 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Aarna Jain 7 years, 11 months ago

Joule

2Thank You

ANSWER

Do voltmeter readings imclude the potential drop due to its own resistance?

Posted by Gehma Anand 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Vedant Bhamare 7 years, 11 months ago

Yes

2Thank You

Sudhanshu Saumya 7 years, 11 months ago

Yes. They r not accurate. So potentiometer is used instead to measure voltage

1Thank You

ANSWER

How does wavelength vary with refractive index

Posted by Sparsh Anand 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Zuleen Khan 7 years, 11 months ago

n=a+b/(lambda)^2+c/(lambda)^4. (Cauchy's relation), Where a,b,c are constants so refractive index varies inversely with refractive index.....here n=refractive index and lambda for wavelength..

1Thank You

Rahul Sonker 7 years, 11 months ago

As wavelength increases refractive index also increases ,wavelength is directly proportional to refractive index

0Thank You

ANSWER

What happen to the resistance of the wire when it's length is increased twice it's original length

Posted by Shubhi Pandit 7 years, 11 months ago

CBSE > Class 12 > Physics

5 answers

Priyanka Bohra 7 years, 11 months ago

Resistance will also increase

0Thank You

Sandesh Verma 7 years, 11 months ago

R directly proportional to L...hence resistance also increase

1Thank You

Chinkee Jaatrana 7 years, 11 months ago

Resistance also increase becoz resistance is directly proportional to length

2Thank You

Sparsh Anand 7 years, 11 months ago

Resistance doubles

2Thank You

Shubhi Pandit 7 years, 11 months ago

No change

0Thank You

ANSWER

Name the phenomena which shows the quantum nature of electromagnetic radiation

Posted by Avinash Anshu 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Kani R 7 years, 11 months ago

Photoelectric effect

3Thank You

ANSWER

a ray of light passing from airthrough an equililateral glass prism undergoes minimum deviation when the angle of incidence is3/4of the angle of the prism. calculate the speed of light in the prism

Posted by Sandesh Ahlawat 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

P type and n type semi conductor image

Posted by Nikidita Gurung 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

(b) How would you modify this capacitor so that it can store 50.0 J of energy without changing the charge on its plates?

Posted by Amit Gupta 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Pranjali Mahajan 7 years, 11 months ago

Are u asking about the same capacitor??? If yes then by changing the voltage across it

2Thank You

Ishika Tanwani 7 years, 11 months ago

By changing capacitance

0Thank You

ANSWER

What is poor electric field

Posted by Chinkee Jaatrana 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Vedant Bhamare 7 years, 11 months ago

The field which have less capacity to attract objects due to electric field is called poor electric field

2Thank You

ANSWER

Wheatstone bridge

Posted by Raghu Nandan 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is one coloumb

Posted by Aman Kamboj 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Chinkee Jaatrana 7 years, 11 months ago

One coulomb is that amount of charge that repels an equal and similar charge with a force of 9into109 N when placed in vaccum at a distance of 1m from it

0Thank You

ANSWER

Phsics sample paper for 12th

Posted by Atul Yadav 7 years, 11 months ago

CBSE > Class 12 > Physics