Correct Answer: C. Internet

Explanation

The means that would be used by BIK Ltd to make the health application available to the target market is the Internet. The Internet is a widely used platform for the distribution of digital services, including applications. By making the health application available on the Internet, BIK Ltd can reach a broad audience and make the service easily accessible to the target market. Users can download the application from app stores or the company's website, allowing them to access and use the health application on their devices. The Internet provides a convenient and efficient channel for distributing digital products and services like applications.

Correct Answer: C. #350

Correct Answer: B. Value

Correct Answer: C. confirmed

Explanation

Corroborate means to confirm or give support to a statement, theory, or findings. Option 'C' is the nearest in meaning to corroborate.

Correct Answer: C. have the light of life

Correct Answer: C. a - b + 1

Explanation

\(\frac{\log 7 \times \log 10}{\log 2}\)

log 7 x log 10 \(\div\) log 2

a + 1 - b

a - b + 1

Correct Answer: A. length, mass and time

Correct Answer: A. 045°

Correct Answer: A. E/B

Explanation

When a charged ion moves through combined electric and magnetic fields, two main forces act on it:

1. Electric Force (Fe): This force is given by Fe = qE, where 'q' is the charge of the ion and 'E' is the electric field strength. The direction of this force is parallel to the electric field (for a positive charge).

2. Magnetic Force (Fm): This force is given by Fm = q(v x B), where 'v' is the velocity of the ion and 'B' is the magnetic field strength. The direction of this force is perpendicular to both the velocity vector 'v' and the magnetic field vector 'B' (given by the right-hand rule for a positive charge).

For the ion to emerge with a constant, undeflected velocity (often implied by resultant emergent velocity in such problems, as in a velocity selector), the net force on it must be zero. This typically happens when the electric and magnetic fields are set up perpendicular to each other, and the ion's initial velocity is perpendicular to both fields.

Let's assume the electric field E is in the +y direction, the magnetic field B is in the +z direction, and the ion's velocity v is in the +x direction.

• The electric force Fe will be `qE` in the +y direction.

• The magnetic force Fm will be `q(v x B)`. Since `v` is along +x and `B` is along +z, `v x B` will be along the -y direction (using the right-hand rule for cross products, `i x k = -j`). So, Fm will be `qvB` in the -y direction.

For the net force to be zero, the magnitudes of these two forces must be equal:

Fe = Fm

qE = qvB

Assuming the ion is charged (q ≠ 0), we can cancel 'q' from both sides:

E = vB

Now, solve for the velocity 'v':

v = E/B

This velocity is the specific velocity at which the electric and magnetic forces balance, allowing the ion to pass through the fields undeflected. This is the principle of a velocity selector.

Comparing this result with the given options:

A. E/B

B. EB

C. B/E

D. E - B

The calculated emergent velocity is E/B.

The final answer is A

Correct Answer: B. requires regular supply of power