Laws of Motion & Friction · JEE Main previous year questions

2002 6 questions

1. Q822002 · 27 Apr 2002 · Shift 1
   
   1. A.$9.2$
   2. B.$9.8$
   3. C.$4$
   4. D.$7.8$
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   Answer: D

2. Q942002 · 27 Apr 2002 · Shift 1

   One end of a mass-less rope, which passes over a mass-less and friction-less pulley $P$ is tied to a hook $C$ while the other end is free. Maximum tension that the rope can bear is $360\mathrm{N}$. With what value of maximum safe acceleration (in $\mathrm{m}{\mathrm{s}}^{-2}$) can a man of $60\mathrm{kg}$ climb on the rope?

   1. A.$16$
   2. B.$6$
   3. C.$4$
   4. D.$8$
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   Answer: C

3. Q1072002 · 27 Apr 2002 · Shift 1

   length of a string tied to two rigid supports is $40\mathrm{cm}$. Maximum length (wavelength in $\mathrm{cm}$) of a stationary wave produced on it is

   1. A.$20$
   2. B.$80$
   3. C.$40$
   4. D.$120$
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   Answer: B

4. Q1102002 · 27 Apr 2002 · Shift 1

   A wave $y=a\sin (\omega t-kx)$ on a string meets with another wave producing a node at $x=0$. Then the equation of the unknown wave is

   1. A.$y=a\sin (\omega t+kx)$
   2. B.$y=-a\sin (\omega t+kx)$
   3. C.$y=a\sin (\omega t-kx)$
   4. D.$y=-a\sin (\omega t-kx)$
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   Answer: B