- ✓Communication
- BLight
- CComputer
- DNone of these
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[Given: $\pi=22 / 7, g=10 ms ^{-2}$, density of water $=1 \times 10^3 kg m ^{-3}$, viscosity of water $=1 \times 10^{-3} Pa$-s.]
$(A)$ The work done in pushing the ball to the depth $d$ is $0.077 J$.
$(B)$ If we neglect the viscous force in water, then the speed $v=7 m / s$.
$(C)$ If we neglect the viscous force in water, then the height $H=1.4 m$.
$(D)$ The ratio of the magnitudes of the net force excluding the viscous force to the maximum viscous force in water is $500 / 9$.
Reason : Above statement is in accordance with conservation of energy
If the origin of the coordinate system is taken to be at the centre of the lens, the coordinates (in $\mathrm{cm}$ ) of the point $(x, y)$ at which the image is formed are
