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

See if you have completed exercise then you can do additional exercise too as it can help you in solving many different pattern of questions. But it's not too important for boards...

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Abcdefg Hijklmnop 6 years, 3 months ago

Board s noval hta di

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ANSWER

Why meter bridge is called as meter bridge ?

Posted by Jahan Mubarak 6 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Jahan Mubarak 6 years, 3 months ago

But our teacher refuses for this answer

0Thank You

Chetna Bhatt 6 years, 3 months ago

A wire of length 100 metre is used in it....that's why it is known as metre bridge

2Thank You

Yogita Ingle 6 years, 3 months ago

A meter bridge works on the principle of Wheatstone's network and is known as Wheatstone's meterbridge. The length of the wire used is one meter, so it is called meterbridge.

2Thank You

ANSWER

What is hyperloop

Posted by Rupali Rajawat 6 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How derive lens formula??

Posted by Game Hunter 6 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Himangshu Maji 6 years, 3 months ago

Just a joke

0Thank You

Himangshu Maji 6 years, 3 months ago

It give direction of the current

1Thank You

ANSWER

Wave front

Posted by Tanu Chauhan 6 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Dr. Dashrath Kumar Hinunia 6 years, 3 months ago

A surface of constant phase

0Thank You

ANSWER

What is lens maker formula ?

Posted by Game Hunter 6 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Srishti Choudhary ✍⏳ 6 years, 3 months ago

See class 10 book

0Thank You

Game Hunter 6 years, 3 months ago

Can u plz tell me that how to derive it??

0Thank You

Neetu Sharma 6 years, 3 months ago

1/f = 1/v-1/u

0Thank You

ANSWER

A small pin fixed on a table top is viewed from above a distance of 50

Posted by Shagun Pandey 6 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Chetna Bhatt 6 years, 3 months ago

Complete the question.....

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ANSWER

A solenoid coil of 300 turns 1m is carrying a currnt 5A and length of solenoid is 0.5m and radious is 1cm find magnitude of magnetic flux inside the solenoid?

Posted by Bhanu Pratap 6 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Neetu Sharma 6 years, 3 months ago

N =300 L'= 1 m I = 5 A L = 0.5 m r = 1 cm

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ANSWER

Any body help me to getting nots of physics tha colud help me for board

Posted by Ishita Patel 6 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

How should i complete my class 11 physics alongs boards for neet

Posted by Pratham Bhargava 6 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Ritika Chitlangia 6 years, 3 months ago

you should have done that in 11th class only, now you do only important questions and revise the formulae

2Thank You

ANSWER

Electric potential is a................. Quantity

Posted by Arpan Tomer 6 years, 3 months ago

CBSE > Class 12 > Physics

5 answers

Ritika Chitlangia 6 years, 3 months ago

scalar

1Thank You

Nishant Malik 6 years, 3 months ago

scalar

2Thank You

Neetu Sharma 6 years, 3 months ago

Scalar

1Thank You

Parul Singh 6 years, 3 months ago

Scaler

1Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

scaler quantity

4Thank You

ANSWER

What is pole?

Posted by Ritul Swain 6 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Rishabh Kumar 6 years, 3 months ago

Mid point of spherical mirror

1Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

I mean it is the middle point of the spherical mirror. ?

3Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

it is the middle of the spherical mirror.

3Thank You

ANSWER

Which sample paper is best????

Posted by Gaurav Kushwaha 6 years, 3 months ago

CBSE > Class 12 > Physics

4 answers

Abhishek Yadav 6 years, 3 months ago

Question bank of oswal

0Thank You

Rishabh Kumar 6 years, 3 months ago

Oswal

0Thank You

Chetna Bhatt 6 years, 3 months ago

ARIHANT

1Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

Arihant is best

2Thank You

ANSWER

Zener diode has higher dopant density compare to odinary pn junction . How does it effect 1 width of depletion layer . 2 the junction feild

Posted by Ashish Doot 6 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

Due to high dopant density,➡️ the width of the junction layer is small ➡️the barrier field (E=V/d) is high.

5Thank You

ANSWER

Light passes successively through 2 polarimeters tubes each of length 0.29m. The first tube contains dextro rotatory solution of concentration 60 kg m^-3 and specific rotation 0.01 rad m²kg^-1. The second tube contain laevorotatory solution of concentration 30 kgm^-3 and specific rotation 0.02 rad m² kg^-1. what is the net rotation produced.?

Posted by ∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

CBSE > Class 12 > Physics

29 answers

Srishti Choudhary ✍⏳ 6 years, 3 months ago

5-6 baar block hui m tumhare baad?? ainvaayii..kisi s b baat ni hoti ti tb toh...naam tum pta kro..??

0Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

? ?

2Thank You

Aman Kumar 6 years, 3 months ago

Exactly ?

1Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

? ? ? naam bol kisne kiya...? ? ? ?bus puch rahi hoon kar toh mai bhi nhi skti uska kuch ?????

1Thank You

Srishti Choudhary ✍⏳ 6 years, 3 months ago

Ha..yhi kosis hogi..

1Thank You

Srishti Choudhary ✍⏳ 6 years, 3 months ago

Yrr...tum sb k baad m bhot bhot din m online aati ti..or 1-2 answer kiye toh..ek dm block...

1Thank You

Aman Kumar 6 years, 3 months ago

Koi nhi...but kosis yahi honi chahiye ki abb block na ho koi......but aisa nhi hai..ager koi ho bhi jata h toh.... after 12th exam hum sab yaha wapas toh aayenge hi....?

2Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

mast ek dum. ? ? ? tum batao. ?

0Thank You

Srishti Choudhary ✍⏳ 6 years, 3 months ago

Kse ho tum sb...yrr app on krne ka mnn b ni krta tha..tum sb ke bina..??...ab b pta ni kitne dino baad aayi yaha..thank god time p aagi..tum sb s kse baat hoti..???

2Thank You

Srishti Choudhary ✍⏳ 6 years, 3 months ago

Acha g acha..shukriya..thnks ni qki thnks bola ni krte..??...nhi aman m toh puchungi...this is my jnmsidadhikaar??

1Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

mtlb aate he sawal puchna hai tumhe. ??welcome back yaar. ? Teri he kami thi. ? ? ?

2Thank You

Aman Kumar 6 years, 3 months ago

Nice to see all the frnds??

2Thank You

Aman Kumar 6 years, 3 months ago

Yr hue na baat..??? srishti ki kami thi.....ye bhi aa gyi....wlc back behna☺️...aur ye, naa pucho ki kaise aaye...bus aa gye ?....

1Thank You

Srishti Choudhary ✍⏳ 6 years, 3 months ago

Mujhe dono y btaoo tum dono online kse aaye??...koi faaltu jvaab nhi ??

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Srishti Choudhary ✍⏳ 6 years, 3 months ago

Ohho..sb yaha h ...Hello Mdm g

1Thank You

? Queen ? 6 years, 3 months ago

Hiii

0Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

???

2Thank You

꧁≪Mämƭå ℭℏ۝ᑌĎℎàℜÿ? 6 years, 3 months ago

????bechari tension mai aa gyi...

3Thank You

Aman Kumar 6 years, 3 months ago

???

3Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

? ? hutt pagl dara diya. ?? mujhe lga Maine aesa kya kar diya. ??

2Thank You

Aman Kumar 6 years, 3 months ago

Wo esliye becz ager dost hoti toh...aajnabiyo ki tarah thanks nhi karti......Maine kitni baar kaha hai " DOSTI MAI NO SORRY, NO THANK YOU" aur tu toh meri sabse achi wali frnd hai....toh tu hi bata...kanuun ke hisab se kya tujhe ye suit karta hai..

2Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

why? ?

2Thank You

Aman Kumar 6 years, 3 months ago

Lagta*

2Thank You

Aman Kumar 6 years, 3 months ago

Mujhe lagata hai ki tum meri dost nhi ho??....

1Thank You

∂Αяѕнαиαα ყα∂Αѵ ??? 6 years, 3 months ago

correct hai thanks. ?

1Thank You

Aman Kumar 6 years, 3 months ago

Bata dena ki answer correct hai ya wrong?...

1Thank You

Aman Kumar 6 years, 3 months ago

For 2nd case, C= 30 , Sp.rotation= 1.146 , l = 2.9 dm ....so applying the formula, u will get 99.702..... so , The net rotation produce is 0° , as the rotation is proceeded in two opposite direction...one is clockwise and another is anti - clockwise... Therefore, Net rotation is 0°.....Hope this helps uh.?....

2Thank You

Aman Kumar 6 years, 3 months ago

For the 1st case, Conc.(C)= 60 , Sp. Rotation = 0.573°, length(l)= 0.29 m=2.9 dm ... So, apply the formula, theta = Sp.rotation × l × C = 99.702 ...ohk soo...do again for the second one....

2Thank You

Aman Kumar 6 years, 3 months ago

Ohk...so the answer is 0°

2Thank You

ANSWER

When a light reflected from plane mirror can form a real image

Posted by Sushma Bahadur 6 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Moni Sheoran@2#3% 6 years, 3 months ago

no it form virtual image

0Thank You

ANSWER

Who discover electron

Posted by Fazal Ahmed 6 years, 3 months ago

CBSE > Class 12 > Physics

4 answers

Vicky Yadav 6 years, 3 months ago

J.J Thomson?

1Thank You

Rishabh Kumar 6 years, 3 months ago

Maharishi kanad

0Thank You

Aman Kumar 6 years, 3 months ago

J.J Thomson

2Thank You

Chetna Bhatt 6 years, 3 months ago

J.J.Thomson

2Thank You

ANSWER

My question is =The focal length of the objective and eyepiece of a microscope are 1.25cm and 5cm respectively. Find the position of the object relative to the objective in order to obtain an angular magnification of 30 in normal adjustment.

Posted by Riya Singh 6 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Important qstn of electronic devices

Posted by Mohit Sahu 6 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Hesigen principal

Posted by Sapna Paswan 6 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Which is most imp derivation in physics 2020 exam

Posted by Yogesh Khanna 6 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Ashish Doot 6 years, 3 months ago

De brogli

1Thank You

Premesh Tyagi 6 years, 3 months ago

All derivations are important

2Thank You

ANSWER

Draw a diagram to show the formation of image of an object placed b/w the pole and centre of curvature of a concave mirror.

Posted by Akriti Bisht 6 years, 3 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is gauss law of magnetism

Posted by Sonu Kumar 6 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Yogita Ingle 6 years, 3 months ago

According to Gauss's law of magnetism, the net magnetic flux through any closed surface is always zero. This law implies that the number of magnetic field lines leaving any closed surface is always equal to the number of magnetic field lines entering it. This conversation is already closed by Expert.

2Thank You

Akriti Bisht 6 years, 3 months ago

It state that the total electric flux passess through any closed surface is 1/Eo times to the total charge inclosed by the surface .

1Thank You

ANSWER