If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
Calculate the e.m.f of the cell in the above circuit if its internal resistance is negligible
12 V
8 V
2 V
36 V
Correct answer is B
1/R = 1/R1 + 1/R2 = 1/3 + 1/6
= 3/6
∴ R = 6/3 = 2
E = I(R + r) = 4(2 + 0) = 8v
3.0 x 1014 Hz
6.0 x 1014 Hz
6.0 x 1012 Hz
2.5 x 1014 Hz
Correct answer is B
f = c/λ
∴ f = | c | = | 3 x 108 |
λ | 500 x 10-9 |
=6.0 x 1014 Hz
The wave phenomenon demonstrated in the diagram above is?
reflection
deflection
diffraction
refraction
Correct answer is C
Diffraction is spreading of wave after passing through a slit
4.99 x 105 Nm-2
9.80 x 103 Nm-2
4.98 x 103 Nm-2
9.80 x 105 Nm-2
Correct answer is A
PV = nRT
∴ P = | nRT | = | 2 x 8.313 x 300 |
_V | ___10-2 |
= 4.987 x 105 Nm-2