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 magnet is moved towards the stationary solenoid
there is no relative motion
the magnet is moved away from the stationary solenoid
the solenoid is moved away from the stationary magnet
Correct answer is B
If both the coil and the magnet are stationary, then there is no change in the magnetic flux and hence no current is induced in the coil.
15 cm
70 cm
40 cm
40 cm
Correct answer is A
M → HiHo = DiDo
where M is the magnification, Hi is the height of the image, Ho is the height of the object, Di is the distance from the lens to the in-focus projected image, and Do is the distance from the object to the lens.
But Di = Hi∗DoHo → 20∗3040
Image distance(Di) = 15cm
Consider the wave equation y = 5mm sin [1cm−1x - 60s−1t]. The wave number is?
0.1 cm−1
10cm−1
1.0cm−1
2cm−1
Correct answer is C
The angular wave number k = \frac{2π}{λ} expresses the number of radians in a unit of distance.
A bar magnet is divided into two pieces, which of the following statement is correct?
two new magnets are created
the magnetic field of each separate piece becomes stronger
the electric field is created
the bar magnet is demagnetized
Correct answer is A
When it is cut into two, the two cut pieces will have their own north and south poles.
Which of these is a derived unit?
Kilogram
Metre
Newton
Second
Correct answer is C
Examples of Fundamental Quantities ; Mass, kilogram, kg ; Electric Current, ampere, A ; Temperature, kelvin, K ; Amount of Substance, mole, Mol.