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.
3.20 ms\(^{-2}\)
0.25 ms\(^{-2}\)
0.80 ms\(^{-2}\)
4.00 ms\(^{-2}\)
Correct answer is C
S = ut + \(\frac{1}{2}\)at\(^2\)
40 = 0 x 10 + \(\frac{1}{2}\)a x 10\(^2\)
50a = 40
a = \(\frac{40}{50}\)
= 0.8m/s\(^2\)
increase weight of tyres
increase friction
increase its longevity
look good
Correct answer is B
Tire treads provide your tires the ability to grip the road safely enhancing proper traction.
Helps your vehicle to be able to accelerate smoothly and as well to be able to brake more quickly.
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 → \(\frac{Hi}{Ho}\) = \(\frac{Di}{Do}\)
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 = \(\frac{Hi * Do}{Ho}\) → \(\frac{20 * 30}{40}\)
Image distance(Di) = 15cm
Consider the wave equation y = 5mm sin [1cm\(^{-1}\)x - 60s\(^{-1}\)t]. 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.