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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? |
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| asked by Ragini Jain (adityajain1234) 6 years ago |
5 |
What is the principal of magnifying glass? |
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| asked by Nehal G (nehalg) 6 years ago |
1 |
Should we learn value of wavelength and frequency for red to violet(all colours). |
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| asked by Paul Stefen (japaul) 6 years ago |
2 |
Are we supposed to memorize terms related to Lenses? |
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| 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 /" |
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| 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 |
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| asked by Rajni Rastogi (arnav21) 6 years ago |
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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 |
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| asked by Panna Thakkar (panna2431) 6 years ago |
3 |
How is focal length related to r.i.? |
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| asked by Momo (zenab13) 6 years ago |
1 |
if the value of g is not given.
which one should be used :- 9.8 OR 10???? |
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| asked by Atharva Raibagi (iamatharva62) 6 years ago |
3 |
