1.12m
2.14cm
2.52cm
2.80cm
2.24cm
Correct answer is E
Extension & Load
Extension = K constant
\(\frac{\text{load}}{0.56cm}\) = \(\frac{X}{20g}\)
X = 2.24cm
is opaque
has high density
has regular expansion
has a high thermal conductivity
can wet glass
Correct answer is D
No explanation has been provided for this answer.
30cm
25cm
20cm
15cm
10cm
Correct answer is A
\(\frac{1}{v}\) + \(\frac{1}{u}\) = \(\frac{1}{f}\)
\(\frac{1}{v}\) = +ve real image distance
where; U = +ve real object distance
f = real focus = 10
m = magnification
M = 2 = \(\frac{v}{u}\)
2u = V
\(\frac{1}{2u}\) + \(\frac{1}{u}\) = \(\frac{1}{10}\)
2u = 30
u = 15cm
v = 2u = 2 x 15
= 30cm
The mass of a proton is approximately equal to that of
an \(\alpha\)-particle
a \(\beta\)-particle
\(\gamma\)-ray
an electron
a neutron
Correct answer is E
No explanation has been provided for this answer.
The quantity (timbre) of sound depends on
amplitude
frequency
harmonics
velocity
wavelength
Correct answer is C
No explanation has been provided for this answer.