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1)
A: Two tuning forks having frequencies 410 Hz and 524 Hz are kept closed and made to vibrate.Beats will not be heard
R: Sound waves superimpose only when frequencies of superimposing waves are equal or nearly equal
2)
A:Nuclear density is almost same for all nuclei
R:Size of nucleus is directly proportional to A1/3
In both questions answer is given as B
but I think answer should be A because reason explain assertion
Please help
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3 Answers
1I think,for 1,it should be A,as it provides a valid reason
For 2, the 1st statement is false.as nucleur density is not same for all nuclei,but a nucleus has approximatrly a constant density.so,i think it should be D( 1st st. false,2nd one true )
