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 : 4
4 : 1
1 : 1
2 : 1
Correct answer is C
θA = 2θ\(_{B}\),
| m\(_A\) | = | 1
2 |
m\(_B\) |
H = MCθ
m\(_A\)c\(_A\)θ\(_A\) = m\(_B\)c\(_B\)θ\(_B\)
( 1/2 m\(_B\))C\(_A\) (2θ\(_B\)) = m\(_B\)c\(_B\)θ\(_B\)
| C\(_A\)
C\(_B\) |
= | 1
1 |
⇒ 1 : 1
I
II
III
V
Correct answer is D
Latent heat or specific latent heat = L
| Heat | energy | = | mL | or | L | = | H
m |
= | energy
mass |
1
0.8
0.65
0.4
Correct answer is D
m = 500kg, W = mg = 500 × 10 = 5000N
F = 2000N
| μ | = | Force at constant velocity
weight |
= | 2000
5000 |
= | 0.4 |
52°C
50°C
49°C
46°C
Correct answer is B
C\(_{\theta}\) = 50, C\(_0\) = 2, C\(_{100}\) = 100
| θ | = | C\(_{\theta}\) - C\(_0\)
C\(_{100}\) - C\(_0\) |
× | 100 | = | 51 - 2
100 - 2 |
× | 100 |
| = | 49
98 |
× | 100 |
θ = 50°C.
The resultant capacitance in the figure above is
0.4μf
0.8μf
1.8μf
4.5μf
Correct answer is B
For the parallel arrangement = 2 + 4 = 6μf
| For | the | series | arrangement | = | 1
C\(_T\) |
= | 1
2 |
+ | 1
3 |
+ | 1
6 |
+ | 1
4 |
| 1
C\(_T\) |
= | 15
12 |
| C\(_T\) | = | 12
15 |
= | 0.8μf |