0.8
0.5
0.2
0.1
Correct answer is C
\(\frac{0.25 \times 10^3} {1.25 \times 10^3}\) = 0.2
686N
595N
581N
105N
Correct answer is D
Wt loss = mg - m (g - a)
= 70 x 10 - 70 (10 - 1.5) = 105N
5s
10s
20s
40s
Correct answer is B
t = \(\frac{v - u}{a}\) = \(\frac{0 - 20}{-2}\) = 10s
8s
4s
2\(\sqrt{2}s\)
\(\sqrt{2}s\)
Correct answer is C
T2 = \(\sqrt{\frac{L^2 \times T_1^2}{L_1}}\)
= \(\sqrt{\frac{0.8 \times 2^2}{0.4}}\)
= 2\(\sqrt{2}s\)
The pair of physical quantities that are scalar only are ?
volume and area
moment and momentum
length and displacement
Impulse and time
Correct answer is A
This is because volume and the area have only magnitude but no direction