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 resistance of an open series circuit is
zero
half the normal resistance of the circuit
double the normal resistance of the circuit
one
infinite
Correct answer is E
No explanation has been provided for this answer.
Which type of radiation does not NOT originate within the nucleus?
alpha
beta
gamma
neutron
x-rays
Correct answer is E
x rays are emitted from processes outside the nucleus
Which of the following statements is CORRECT?
charges generated on glass rubbed with silk are called negative
charges in various media can be carried by protons detached from their atom
the magnitude of any charge is a multiple of the charge of an electron
the intensity of an electric field is a scalar quantity
if 500 joules of work are required to move a 2-coulomb charge between two points, the potential difference between the two point is 100V
Correct answer is C
No explanation has been provided for this answer.
\(\frac{1}{2}\)
\(\frac{8}{9}\)
\(\frac{9}{8}\)
\(\frac{17}{12}\)
2
Correct answer is C
Ray travelling from water to glass;
\(\frac{\text{speed of light in air}}{\text{speed of light in glass}}\) = \(\frac{3}{2}\)
= 3 x 108ms-1
X = 2 x 108ms-1
\(\frac{\text{speed of light in air}}{\text{speed of light in water}}\) = \(\frac{4}{3}\)
= \(\frac{3 \times 10^8}{g}\)
Y = 2.25 x 108ms-1
from water to glass;
Refractive = \(\frac{\text{speed of light in water}}{\text{speed of light in glass}}\)
= \(\frac{2.25 \times 10^8}{2.00 \times 10^8}\)
= 1.125
= \(\frac{9}{8}\)
the car will be able to stop immediately the driver notices the dog
the car will stop 30m after hitting the dog
the car will stop 20m in front of the dog
the driver will quickly reverse the car
the car will stop 5m beyond the dog
Correct answer is B
F=ma
2000=800 x a
a = \(\frac{2000}{800}\) → 2.5
V\(^2\)=u\(^2\)+2as
400=2 × 2.5 × S
S =400 ÷ 5 → 80
: 80 - 50 = 30
The car will stop 30m after hitting the dog