Correct Answer: B. ores

Explanation

(a) \(F = xi + 15j\)

\(|F| = \sqrt{x^{2} + 15^{2}} = 17\)

\(x^{2} = 17^{2} - 15^{2} = 64\)

\(x = \pm \sqrt{64} = \pm 8\)

\(x = 8 ; x = -8\)

(b)

\(\tan \alpha = \frac{15}{8} = 1.875\)

\(\alpha = \tan^{-1} (1.875) = 61.9° \approxeq 62°\)

\(\tan \beta = \frac{15}{-8} = -1.875\)

\(\beta = \tan^{-1} (-1.875) = -61.9°\)

= \(180° - 61.9° = 118.1° \approxeq 118°\)

Directions of forces are 62° and 118° each with the positive x- axis.

Explanation

(a)(i) Definition of Terms: (1) Focal length of a converging lens is the distance between the optical centre and the principal focus.

(2) The geometric centre of the lens through which rays of light pass undev1ated. OR Optical centres of a converging lens is a point in the lens through which the principal ax?s and light rays pass undeviated.

(b)(i) Primary Colours of Light: (1) Red (2) Blue (3) Green (b)(ii) Match each primary colour to list Corresponding complementary colour:

(1) Red >Cyan (2) BIlue>Yellow (3) Green Magenta

(c)(i) Angle of Incidence: n = \(\frac{Sin i }{Sin r}\);

1.5 = \(\frac{Sin i }{Sin 30}\);

i = 48.6°

Angle of Min Deviation

n = sin \(\frac{D min + A}{2}\)/ [Sin 1/2]

1.5 = Sin \(\frac{D min + A}{2}\)/[sin30]°

D min = 37.2°

Correct Answer: A. 18kW

Explanation

P = FV = 600 x 30 = 18kW

Correct Answer: C. does not take praise or blame for his performance

Explanation

The anonymity of the civil service is linked to two concepts: permanence and neutrality. Their job is permanent till retirement or death and they are meant to be neutral in dealing with each government.

Correct Answer: C) Rickets

Explanation

Vitamin D is an important nutrient that our body needs for strong bones and teeth. The question is asking about the deficiency of Vitamin D and what it can lead to. From the options given, the correct answer is C, which is Rickets. Rickets is a condition that affects the bones, causing them to become soft and weak. This can lead to deformities, such as bowed legs and a curved spine. Vitamin D is necessary for the absorption of calcium from the food we eat. Without enough Vitamin D, our bodies cannot absorb enough calcium, which can lead to a deficiency of calcium in our bones. This can cause bones to become soft and weak, leading to conditions such as Rickets. Scurvy, which is option A, is caused by a deficiency of Vitamin C, not Vitamin D. Pellagra, which is option B, is caused by a deficiency of Vitamin B3. Beriberi, which is option D, is caused by a deficiency of Vitamin B1. To prevent a deficiency of Vitamin D, it is important to get enough sunlight exposure as well as consume Vitamin D-rich foods such as fatty fish, egg yolks, and fortified dairy products. If you are not able to get enough Vitamin D from your diet or sunlight, you may need to take Vitamin D supplements.

Correct Answer: D. Sanballat

Correct Answer: B. predict

Correct Answer: D. boring

Correct Answer: C. war