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.
In measuring high frequency a.c, the instrument used is the
d.c ammeter
moving coil ammeter
moving iron ammeter
hot wire ammeter
Correct answer is D
Hot wire ammeter is used because the heat affect of A C is same as that of DC
Which of the following is a property of steel?
it cannot retain its magnetism longer than iron
it can be used for making temporary magnets
it can be used for making permanent magnets
it can easily be magnetized and demagnetized
Correct answer is C
Steel is not easily magnetized and dismagnetized
The eclipse of the sun occurs when the
moon is between the sun and the earth
earth is between the sun and the moon
moon is not completely hidden in the earth's shadow
moon's umbra falls on some part of the earth
Correct answer is A
Eclipse of the sun occurs when the moon which is opaque objects between the sun and the earth
0.06 D
0.02 D
0.03 D
0.04 D
no option is correct
Correct answer is B
No explanation has been provided for this answer.
0.3
6.0
3.0
2.0
Correct answer is C
Dielectric constant = (c)/c° = (60)/20 = 3