The magnitude and direction of the acceleration produced in a body of mass 5 kg when two mutually perpendicular forces 8 N and 6 N act on it, are respectively:
$20 \mathrm{~m} \mathrm{~s}^{-2} ; \tan ^{-1}(4 / 3)$ with 8 N force
$2 \mathrm{~m} \mathrm{~s}^{-2} ; \tan ^{-1}(3 / 4)$ with 6 N force
$2 \mathrm{~m} \mathrm{~s}^{-2} ; \tan ^{-1}(4 / 3)$ with 8 N force
$2 \mathrm{~m} \mathrm{~s}^{-2} ; \tan ^{-1}(3 / 4)$ with 8 N force
Consider two uncharged capacitors of equal capacitance 200 pF . One of them is charged by a 100 V supply and disconnected. Now this capacitor is connected to the uncharged capacitor. The amount of electrostatic energy lost in the process is:
$0.5 \times 10^{-6} \mathrm{~J}$
1.0 J
$1.0 \times 10^{-6} \mathrm{~J}$
0.5 J
The power of a crane, which lifts a mass of 1000 kg to a height of 20 m in 10 s is: $\left(g=9.8 \mathrm{~m} / \mathrm{s}^2\right)$
19.6 W
39.2 W
19.6 kW
39.2 kW
In a vernier calliper, 20 VSD coincide with 16 MSD (each division of length 1 mm ). The least count of the vernier callipers is:
0.2 cm
0.01 cm
0.02 cm
0.1 cm
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