1750\(\Omega\)
1950\(\Omega\)
2000\(\Omega\)
2500\(\Omega\)
Correct answer is B
No explanation has been provided for this answer.
0.5 A
0.9 A
1.5 A
4.5 A
Correct answer is C
E.m.f = 1.5
r = \(\frac{1 \times\ 1 \times 1}{(1 \times\ 1) + (1 \times\ 1) + (1 \times\ 1)}\)
r = \(\frac{1}{3}\)\(\Omega\)
I = \(\frac{E.m.f}{r + R}\)
I = \(\frac{1.5}{\frac{1}{3}\ + \frac{2}{3}}\)
I = 1.5A
The electromagnetic waves that are sensitive to temperature changes are
X-rays
Gamma-rays
Ultra-violet rays
Infra-red rays
Correct answer is D
No explanation has been provided for this answer.
2.33
2.25
1.33
1.25
Correct answer is D
n = \(\frac{3 \times\ 10^8}{2.4 \times\ 10^8}\)
n = 1.25
convex mirror with his face at the focus
concave mirror with his face between the focus and the mirror
concave mirror with his face at the focus
convex mirror with his face between the focus and the mirror
Correct answer is B
No explanation has been provided for this answer.