7.5cm
9cm
10.8cm
12cm
12.6cm
Correct answer is D
18cm .... 100oC
x .... 60oC
3cm .... 0oC
\(\frac{x - 3}{18 - 3}\) = \(\frac{60 - 0}{100 - 0}\)
= 12cm
If the wavelength of a wave traveling with a velocity of 360ms-1 is 60m, the period of the wave is
6s
3.6s
0.17s
0.61s
3s
Correct answer is C
V = \(\alpha\)F and F = \(\frac{1}{T}\)
v = \(\frac{\pi}{T}\)
T = \(\frac{60}{360}\)
T = 0.17s
When the vapour of a substance is in equilibrium with its own liquid, it is said to be
gaseous
unsaturated
liquefied
diffused
saturated
Correct answer is E
No explanation has been provided for this answer.
In what range of temperature is the expansion of water anomalous?
+208oC to +212oC
-80oC + -76oC
-4oC to 0oC
+96oC to +100oC
0oC to +4oC
Correct answer is E
No explanation has been provided for this answer.
4
\(\frac{\pi}{2}\)
\(\frac{1}{4}\)
2\(\pi\)
2
Correct answer is E
In simple pendulum, T = 2\(\pi\)\(\sqrt\frac{L}{g}\)
\(\frac{T_2}{T_1}\) = \(\sqrt\frac{L_1}{L_2}\) but, L2 = 4L1
\(\frac{T_2}{T_1}\) = \(\sqrt\frac{L_1}{4L_1}\)
T2 = 4T1