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Marks distribution for each chapter

Posted by Ajay Naik 7 years, 11 months ago

CBSE > Class 12 > Physics

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Explain how transistor work as a switch.

Posted by Lekha Raj 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

show that in parallel grouping of a number of sale the value of current will be same as that due to a single field when internal resistance of cell is negligible in comparison of external resistance in circuit

Posted by Anita Kumari 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Anita Kumari 7 years, 11 months ago

rate in sale each of EMF and internal resistance are connected in parallel with external resistance are as shown in figure total resistance of the circuit 8 plus or minus

2Thank You

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A small telescope an objective lens of focal length 150cm and eyepiece of focal length 5cm what is the magnifying power of the telescope for viewing distant object in normal adjustment of this telescope is used to view a 100km tall tower 3km away

Posted by Bharat Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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What is seebeak effect?

Posted by Akarsh Mall 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Prove anglei=angler by wave theory

Posted by Roy Tiwari 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Lekha Raj 7 years, 11 months ago

Clearly has already mentioned in Ncert.........

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2 small identical electrical dipoles ,each of dipole moment p are kept at an angle of 120° . What is the resultant dipole moment.if this system is subjected to electric field directed along+X direction what will be the magnitude and direction of torque acting on this

Posted by Aditya Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

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What is root mean square value of A.C

Posted by Kundhan Saha 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Anuj Yadav 7 years, 11 months ago

I RMS = 0.707 I.

1Thank You

Javed Ali Ali 7 years, 11 months ago

I rms=[imax/√2]

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Why intensity of light coming out of a palaroid does not change irrespective of the orientation of the pass axis of the polaroid . Explain why?

Posted by Prateek Kumar Devnani 7 years, 11 months ago

CBSE > Class 12 > Physics

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2 identical cells of emf 1.5v each joined in parallel provides supply to an external circuit consisting of 2 resistors of 17 ohm each joined in parallel. A very high resistance voltmeter reads the terminal voltage of the cells to be 1.4v. What is the internal resistamce of each cell?

Posted by Ayushman Tiwari 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Rajneesh Verma 7 years, 11 months ago

r= 1.2

1Thank You

ANSWER

Which of the following 120 volt AC device costs more to operate: A. 1 that draws in RMS current of 10a. B. 1 that draws a peak current of 12a.

Posted by Ayushman Tiwari 7 years, 11 months ago

CBSE > Class 12 > Physics

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'n' identical capacitors when joined in series given effective capacitance of C units . What will b the capacitance if the capacitor r now placed in parallel combination?

Posted by Ayushman Tiwari 7 years, 11 months ago

CBSE > Class 12 > Physics

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Transistor as amplifier

Posted by Ashish Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

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In a laboratory in the northern hemisphere,an electron is projected vertically upwards. In which direction will it deflect immediately after projection?

Posted by Shruti Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

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please help me mAke time table because it is.not possible for me to study all the subjects plzz??

Posted by Nitika Thakur 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Abhijeet Kumar 7 years, 11 months ago

First of all don't panic,be calm nd choose ur appropriate timing for ur study whether it's day or night than u have to choose ur weaker subject nd give min 3 hrs to it nd in rest subjects give min 2 hrs daily, in this process u have to manage a min time period Of 11to 12 hrs

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Angle of deviation

Posted by Ravish Kumar 7 years, 11 months ago

CBSE > Class 12 > Physics