Physics Questions and Answers
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.
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.
1.6cm
16.0cm
20.0cm
25.0cm
Correct answer is D
Devices with different liquids
d\(_1\)h\(_1\) = d\(_2\)h\(_2\)
1 × 20 = 0.8 × h
| h | = | 20
0.8 |
= | 25cm |
In semi-conductor, the carriers of current at room temperature are
electrons only
electrons and holes
holes only
electron and ions
Correct answer is B
Electron and holes represents the negative and positive charge respectively.
5W
6W
7W
8W
Correct answer is A
I = 1A, F = 800 cycles/s = 800Hz
R = 5Ω, L = 2.5mH
P = I\(^2\)R = I\(^2\) × 5 = 5W
0.71V
0.7V
0.82V
0.8V
Correct answer is A
Req = 200 + 500 + 1000 = 1700Ω
| P.d | (across | 200Ω) | = | 200
1700 |
× | 6 | = | 0.71V |
total number of its proton & neutrons
number of its protons
mass of its electrons
total number of its protons & electrons
Correct answer is A
Nucleus = mass of proton + mass of neutron