33m
110m
220m
330m
495m
Correct answer is E
No explanation has been provided for this answer.
3
1.5
1.32
1
0.67
Correct answer is E
\(\alpha_1\)L1 = \(\alpha_2\)L2
\(\frac{L_1}{L_2}\) = \(\frac{\alpha_1}{1.5\alpha_2}\) (since a1- 1.5\(\alpha_2\))
\(\frac{L_1}{L_2}\) = 0.67
20g
25g
45g
50g
100g
Correct answer is A
Heat lost = heat gained
mc\(\theta\) = c\(\theta\) + mc\(\theta\)
m x 4.18 x (100 - 50) = 80(50 -25) + [20 x 4.18] x (50 - 25)
m = 20g
Which of the following elements is the best absorber of X-rays?
hydrogen
oxygen
calcium
copper
lead
Correct answer is E
No explanation has been provided for this answer.
Which of the following radiations cannot be deflected by a magnetic field?
\(\alpha\)
\(\beta\)
\(\gamma\)
\(\beta\) and \(\gamma\)
none of them
Correct answer is C
No explanation has been provided for this answer.