A light ray from a ray box is incident on a rectangular glass prism and the path of the incident ray and emergent ray was traced to obtain the diagram below. The refractive index of air and the refractive index of a glass are 1,00 and 1,52 respectively. 6.1 State Snell’s law in words. (2) … Read more
A satellite of mass 1 000 kg is orbiting the earth at a distance of 200 km from the surface of the earth as shown on the diagram below. 5.1 State Newton’s Law of Universal Gravitation in words. (2) 5.2 Calculate the magnitude of the force that the earth exerts on the satellite tokeep it … Read more
Two blocks of masses 1,5 kg and 3,2 kg are connected by a light inextensible string. A 24 N force is applied on a system of blocks to move them up an inclined surface which is 25 o to the horizontal at a CONSTANT VELOCITY as shown on the diagram below. The 1,5 kg box … Read more
A 250 N force is applied on a block of mass 25 kg. The 25 kg block is connected to a 10 kg block by a light inextensible string through a frictionless pulley as shown on the diagram below. The 250 N force acts at an angle of 25 o to the horizontal so that … Read more
A pulley system is used to keep a crate of mass M kg stationary as shown on the diagram below. 2.1 Define the term resultant vector. (2) 2.2 Calculate the: 2.2.1 Vertical and horizontal components of T 2 (4) 2.2.2 Magnitude of T 1 (2) 2.2.3 Mass M of the crate (3) [11]
QUESTION 1: MULTIPLE-CHOICE QUESTIONS Four possible options are provided as answers to the following questions. Eachquestion has only ONE correct answer. Choose the best answer and only write down(A–D) next to the question numbers (1.1–1.10) in the ANSWER BOOK, for example1.11 D. 1.1 Which ONE of the following forces CANNOT be equal to zero? A … Read more
Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A−D), next to the question numbers (1.1 to 1.10) in the ANSWER BOOK, for example 1.11 D. 1.1 The distance between the nuclei of two adjacent atoms when atoms bond is called … A bond length.B … Read more
Two points, P and T, are situated 3 mm apart in the electric field of positive charge Q, as shown below 10.1 Draw the electric field pattern around charge Q. (2) The magnitude of the electric field at point P is 4 x 106 N·C-1 and at point T themagnitude is 2,5 x 105 N·C-1. … Read more
A small isolated sphere A, with a mass of 0,2 g, carrying a charge of +7 x 10-9 C,is suspended from a horizontal surface by a string of negligible mass. A secondsphere B, carrying a charge of -8 x 10-9 C, on an isolated stand, attracts sphere A sothat the string forms an angle of … Read more