Generate Quiz 68E4647693C69

When the change in time is zero, the velocity reaches its maximum. Which is also known as instantaneous velocity.

A transformer’s efficiency can be computed as follows: Efficiency = output/input x 100 = 100 x 100/250 x 0.5

= 80%

Light is an electromagnetic wave with both electric and magnetic components, which is explained by polarization. As a result, option C) Both A & B is the right response. Light is made up of electromagnetic waves that are propagated by oscillating electric and magnetic fields perpendicular to one another. The alignment of the electric field vector in a particular direction, which produces particular properties of light waves, is known as the phenomenon of polarization.

The amount of magnetic field that flows through a specific area is known as the magnetic flux. It can be found as the dot product of area A and magnetic field B. An area vector’s direction is normal, or perpendicular, to the area’s surface.

There is no computation needed to answer this question.

Just be aware that there won’t be an attractive or repulsive force between them if we add -5C to both. This will cause the +5C point charge to become 0C, or without any charge.

There are two types of nuclear reactors: slow reactors and fast reactors. Thus, D is the right response. They asked us about the MAIN types of nuclear reactors, even though thermal reactors are nuclear reactors. It is a kind of slow nuclear reactor in and of itself.

Since the temperature change on the Celsius and Kelvin scales is equal, the response will be D.

B is the right choice.

Using the formula provided:

V = I R

V = 300 × 40

V = 12000 Volt

There is only one right answer because this is a numerical question.

As stated on page 40 of the Physics Sindh Textbook.

The statement “….. two static point charges…..” makes it very evident that the charge is at a single location in space.

The conductor’s resistance drops to almost zero at absolute zero, or 0K, which is also the lowest temperature.

The formula ω = qB/m provides the angular frequency (ω) during circular motion in a magnetic field, where:

The particle’s mass is denoted by m, the magnetic field strength by B, the charge by q, and the angular frequency by ω.
This formula demonstrates that the angular frequency is inversely proportional to the particle’s mass and directly proportional to the product of the charge and the magnetic field strength. It shows how quickly the particle in the magnetic field rotates or oscillates. A greater mass will result in a lower angular frequency, whereas a higher charge or stronger magnetic field will result in a higher angular frequency.

The explanation is provided below.

A particle is said to be in circular motion when it travels in a circle with equal angles at equal times. The particle’s velocity vector is constantly changing when it is moving in a circle. Being a vector quantity, velocity possesses both direction and magnitude.

In the case of circular motion, the velocity vector’s direction continuously changes as the particle travels around the circle, but its magnitude stays constant (assuming the speed stays constant). The velocity vector is not constant, as indicated by this direction change.

The formula for momentum is mv, and its dimensions are [M1L1T-1]. Since impulse is essentially the change in momentum, its dimensions are identical to those of momentum. In addition, impulse’s dimensions are [M1L1T-1], which matches its formula I = F x t.

The power dimensions are [M1L2 T-3]. Planck’s constant has the same dimensions as angular momentum, which are [M1L2T−1].

The X-ray production phenomenon is thought to be the photoelectric effect’s opposite. When a high-energy photon strikes a metal surface, an electron is released, a phenomenon known as the photoelectric effect. In the opposite process, when electrons strike a metal, photons are released. This occurs during the production of X-rays.

h/p = lambda; p = momentum

6.63 × 10-34/ 3 × 10-26 is lambda.

lambda= 2.21 × 10-8 m

lambda= 2.21 × 10-9 m

lambda = 22.1 nm

Light Amplification by Stimulated Emission of Radiation is what LASER stands for. It is composed of uniform, intense, monochromatic, and highly focused light beams. A laser can use electromagnetic radiation ranging from the far-infrared to the ultraviolet spectrum. In free space, electromagnetic waves move at the same speed (3×108 m/s). They have different frequencies and wavelengths. According to decreasing wavelength (increasing frequency), the electromagnetic spectrum is as follows:

Radio waves > Microwaves > Infrared Radiation > Visible Light > UV Rays > X rays > Gamma Rays.

The conductor’s resistance is determined by:

R = ρ/A

Resistance falls as the cross-sectional area grows.

Resistance of thin wire = 40 Ω

Thick wire resistance = 40/4 = 10 Ω

Electromotive force, or EMF, is defined by Faraday’s law.

Since the gas molecules will gain inetic energy from heating and become more energetic, they will move much more quickly and spread out to occupy more space, increasing the gas’s volume when heated at constant pressure.

Amplification of light through stimulated radiation emission