360cm3
600cm3
240cm3
800cm3
450cm3
Correct answer is B
Since no loss of oil,
Density x volume = constant
D1V1 = D2 x V2
0.9 x 400 = V2
V2 = 600cm3
Natural radioactivity consists of the emission of
\( \alpha \) -particle and \( \beta \) rays
\( \alpha \) -particle and X-rays
\( \gamma \)-rays and X-rays
\( \alpha \)-particle, \( \beta \) rays and \( \gamma \)-rays
\( \alpha \) -particle, \( \beta \) rays, \( \gamma \)-rays and X-rays
Correct answer is D
No explanation has been provided for this answer.
The activity of a radioactive substance depends on
temperature and purity
temperature and age
purity and age
age, purity and temperature
none of the above
Correct answer is E
No explanation has been provided for this answer.
same in sign and quantity
same in sign but greater
opposite in sign but greater
opposite in sign but less
opposite in sign but equal
Correct answer is E
No explanation has been provided for this answer.
According to Ohm's law, the ratio V/I is constant for
an electrolyte
a diode
a transistor
silver
all of the above
Correct answer is D
No explanation has been provided for this answer.