Question 4826:

The eye controlled the amount of light reaching the retina by adjusting the _____________

A. Cornea
B. Iris
C. Retina
D. Optic nerve

Question 4827:

In order to remove error from parallax when taking measurements with a meter tule, the eye should be focused _____________

A. Slantingly towards the left on the markings
B. Slantingly toward the right on the markings
C. Vertically downwards on the markings
D. Vertically upwards on the markings

Question 4828:

A load is pulled at a uniform speed along horizontal floor by a rope at 45°C to floor. If the force in the rope is 1500N, what is the frictional force on the load?

A. 1524N
B. 1350N
C. 1260N
D. 1061N

Question 4829:

[image]
From the velocity-time graph shown above, which of the following quantities CANNOT be determined?

A. Deceleration
B. Initial velocity
C. Total distance travelled
D. Initial acceleration

Question 4830:

A rocket is fired from the earth’s surface to a distance planet. By Newton's law of universal gravitation, the force F, will _____________

A. Increase as a reduces
B. Increase as G varies
C. Remains constant
D. Increases as r reduces