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Indian Certificate of Secondary Education (ICSE), New Delhi
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Why is soft iron core used in a D.C. Motor and an A.C. Generator?
Can it be because of soft iron's high magnetic permeability and low retentivity?
asked by RaBh (rahulbhardwaj2002) 6 years ago
2
Explain why it appears that energy released in fusion is less than fission, but it is not so.
asked by Pratham Shah (pratham2313) 6 years ago
1

+ 1 more questions by pratham2313  

The power rating of an electric bulb is 40W 220 V. Find the power when the potential difference is reduced to 200V

--- My answer is approx. 33 W, is it right?
asked by Ragini Jain (adityajain1234) 6 years ago
5
What is the principal of magnifying glass?
asked by Nehal G (nehalg) 6 years ago
1
Should we learn value of wavelength and frequency for red to violet(all colours).
asked by Paul Stefen (japaul) 6 years ago
2
Are we supposed to memorize terms related to Lenses?
asked by Siddhant Joshi (siddhant94) 6 years ago
2
if they ask ri to find then we should do 
u=speed in vacum /speed in medium
or
aUm = speed in vacum /"
asked by Somay Vaidh (somay2003) 6 years ago
2
a calorimeter of mass 50g and specific heat capacity 0.42J/gC contains water at 20C a piece of metal mass 20g and specific heat capacity 0.3J/gC at 100C is added, the final temperature is 22C find the mass of water used
asked by Rajni Rastogi (arnav21) 6 years ago
3
Hey guys Problems related to lens are not there in the scope do we have to do?
The formula 1/v - 1/u = 1/f . These sums are not there in scope
asked by Panna Thakkar (panna2431) 6 years ago
3
How is focal length related to r.i.?
asked by Momo (zenab13) 6 years ago
1

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