Q. a cube of mass 1kg with each side of 1cm is lying on the table. find the pressure exerted by the block on the table. take g=10 m/s2
Ans: Pressure is given as force/area so, Force, F = mg = 1000 X 981 gm.m/s2and area, A = 1x1 cm2 = 1 cm2Thus, the pressure exerted would be P = (981 X 1000) / 1 or P = 9.81 X 10 5 pa Q. The mass of a solid iron cube of side 3cm is to be determined usig a spring balance. If the of iron is approximately 8.5 g/cm3, the best suited spring balance for determining weight of the solid would be of 1. range 0-250gwt ; least count 1gwt 2. range 0-250gwt ; least count 5gwt 3. range 0-1000gwt ; least count 5gwt 4. range 0-1000gwt ; least count 10gwt Ans: Edge=3 cm , Density=8.5 g/cm3Mass= density x volume = 8.5 x(3x3)=229.5gwt Therefore second spring balance of range 0-250 gwt with least count 5gwt will be suitable. Q. The density of turpentine oil is 840 Kg/ m3. What will be its relative density. (Density of water at 4 degree C is 10 cube kg minus cube) Ans:Relative Density = Density of Substance/ Density of water at 4 0cDensity of turpentine oil = 840 kg/ m3 ( given).Density of water at 4 0c = 1000 kg/ m3Relative density of turpentine oil = Density of turpentine oil / Density of water at 4 0c= (840 / 1000 ) kg m-3/ kg m-3 = 0.84Since, the relative density of the turpentine oil is less than 1, therefore it will float in water. Q. A solid body of mass 150 g and volume 250cm3 is put in water . will following substance float or sink if the density of water is 1 gm-3? Ans: Visit link for full question solved for 9th CBSE board
67 Comments
Floating bodies
10/10/2012 03:18:49 pm
9th Physics Solved Numerical Floating bodies ( Gravitation) Term-2
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raj
25/10/2017 08:32:08 pm
good
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Akhya Singh
18/12/2021 09:00:03 pm
Very very worst
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nidhi
26/12/2012 05:36:49 am
thank u sooooooooooooooooooooooo much
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sumit
6/12/2014 10:33:36 am
thank u
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oram
19/12/2016 03:53:03 pm
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Sipam
15/1/2017 10:52:26 am
Fuck u baby
Reply
virat kohli
2/3/2017 12:34:35 pm
bakwass
faliza
21/11/2017 09:04:37 pm
oh!!!!!god.....kya hoga is desh ka 24/1/2013 02:21:12 pm
sir, what r the main four causes in which can be produced?pls rply
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Diksha Thakur
21/2/2013 01:28:50 am
Thank youuuuuu very much....
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shanaya singh
16/1/2017 08:54:52 pm
Yaa.. absolutely u r right. ...
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anjali
28/9/2013 12:58:18 pm
faltu
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surabhi
21/10/2013 01:48:16 pm
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Asfia khan
13/1/2014 07:57:15 am
Interesting questions
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l.nivetha
14/3/2014 12:29:04 am
very easy questions you can give some complicated questions also
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Miya
7/11/2016 03:34:28 pm
Time pass karte h bevakoof
Reply
prime
12/10/2017 07:39:48 pm
Lol
L.NIVETHA
14/3/2014 12:31:02 am
WE ALREADY PRACTISED ALL THESE QUESTIONS IN OUR SCHOOL. SO TRY TO GIVE SOME MORE QUESTIONS OK
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hari priya
14/3/2014 05:27:08 am
very very easy questions. ean edha madhiri mokka question kuduthu saaka adikkireenga
Reply
hari
14/3/2014 08:33:21 am
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Manav
7/11/2016 12:03:53 pm
wht the hell do u mean ?
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dfs
14/3/2014 05:27:50 am
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rekha
14/3/2014 08:32:50 am
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aashima arora
30/4/2014 03:02:07 pm
faltu
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amisha rathore
30/4/2014 03:02:52 pm
yaaaaaaaaaaaaaaa
Reply
richa priya
20/5/2014 04:58:23 am
too easy sums...........if such would be our ques. paper all would hv scored full 100 marks in physics................
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Sony
9/8/2014 01:21:01 pm
Uh the problems were quite easy!!
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Naina
19/10/2014 10:41:10 am
Thanks these were very usefull but I need some more numericals
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srishti chandel
8/2/2015 10:35:27 am
very helpful
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Daisy sharma
27/10/2016 02:07:02 am
Excellentø. Bravä🌸🎩
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Tolu
7/11/2016 03:40:03 pm
Kya excellent lag rha h isme
muskan
9/2/2015 09:35:58 am
nice easy questions but need some more questions to practice
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kumar pinki
23/2/2015 06:01:54 am
Gud enough
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asha
16/3/2015 01:10:54 am
There is a mistake in the second question.
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Simran
28/9/2015 04:36:22 pm
Thank you , please provide sum more numericals
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abhineeta
19/10/2015 08:19:58 pm
need to have more tough questions. As we refer to these sites for hard and variety of questions .
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shyna
20/11/2016 02:49:34 pm
Yes you are very much correct . They have to have more tough questions as we need to practice for more and more hard questons
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jay sagar
22/10/2015 09:15:42 pm
These sample paper are help me a lot for preparing the exams
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Ojaswi
5/3/2017 01:45:30 pm
I hope you would score good marks in English because English is also a very important subject. Try giving it some more time and I'm sure you'd do well. BTW talking about these numericals, you are absolutely correct as these are so easy ones. But sometimes people get these numericals wrong so take care!
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guru
20/11/2015 09:07:41 am
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV BAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD
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Devan thakur
19/1/2016 11:07:34 pm
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vkm
4/3/2016 04:15:16 pm
It
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boobies
13/3/2016 03:16:16 pm
no
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Jiya
6/10/2016 05:14:11 pm
Bakkkwaaas
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Dhoku moku
7/11/2016 03:42:08 pm
Very very ......,......,...........,...........,............,.............!....poor guys
Reply
13/11/2016 12:51:00 pm
f##king stupid site....creator of this site doesn't knows difference between area and volume...!!!!!!!@#!!......because in 2nd question volume is given- 3*3..!!
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Rohit
17/11/2016 05:36:27 am
Useless
Reply
yoshi
25/11/2016 06:58:46 pm
its not clear as much.I am not satisfied .
Reply
Aisha
30/11/2016 04:00:18 pm
Lol
Reply
leeza zomai
12/12/2016 01:06:08 am
Uselesssssss
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Ethan
13/1/2017 03:17:49 pm
In the second question, the answer is the 1st spring balance not the second one.
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shanaya roy
16/1/2017 08:51:38 pm
Yaaaa.... u all r right these r useless questions... and site also......
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Ghhvvvvn
16/2/2017 06:37:47 am
This website is tooo much bad first question is wrong
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babe
26/2/2017 07:31:03 pm
waste
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satyam
14/3/2017 08:23:27 am
very bad
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Aishwari
19/3/2017 09:34:39 am
Very easy questions
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Medha
14/11/2017 07:36:39 am
Very bad question
Reply
15/3/2018 12:53:41 pm
This is very easy question neet to improvment
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