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.
The part of the human eye that does similar work as the diaphragm of a camera lens is the
Ciliary muscles
Pupil
Iris
Retina
Correct answer is C
Iris is similar to diaphragm.
Which of the following characteristics of a wave is used in the measurement of the depth of the Sea?
diffraction
interference
refraction
reflection
Correct answer is D
Depth of sea can be measured by echo, a reflected sound waves.
Which of these is observed when air is pumped out of a discharge tube without lowering its pressure
the conductivity of the air increases
the conductivity of the air decreases
conduction does not occur
spark are produced
Correct answer is C
Conduction takes places in gases when air is pumped out of a discharged tube under reduced pressure.
2000.25 cm3
200.025 cm3
4003.27 cm3
2010.25 cm3
Correct answer is A
m = 0.354g, T1 = 273°C = 273 + 273 = 576K
P1 = 114cmHg, V1 = 2667cm3 at STP
T2 = 273K, P2 = 76cmHg, V2 = ?
| P1V1
T1 |
= | P2V2
T1 |
| V2 | = | 114 × 2667 × 273
76 × 576 |
= | 2000.25cm3 |