The gravitational potential energy of an object close to the ground varies:

Q-1;  The gravitational potential energy of an object close to the ground varies:

1) inversely as its distance from the ground

2) directly as its distance from the ground

3) inversely as the square of its distance from the ground

4) directly as the square of its distance from the ground

ANSWER: X -- DIRECTLY AS ITS DISTANCE FROM THE GROUND

Q-2;  When the image formed by a convex mirror is compared to its object, the image is usually:

1) erect and smaller

2) inverted and imaginary

3) real and inverted

4) real and erect

ANSWER: 1 -- ERECT AND SMALLER

Q-3;  In optics, when the vibrations of light are limited to a single two dimensional plane, it is said that light has been what?

ANSWER: POLARIZED

Q-4;  One nanometer is equal to:

1) 10-12 meters

2) 10-11 meters

3) 10-3 meters

4) 10-9 meters

ANSWER: 4 -- 10-9 METERS

Q-5;  In radioactive decay, the emission of an electron is characteristic of:

1) Alpha decay

2) Beta decay

3) Gamma decay

4) X-rays

ANSWER: X -- BETA DECAY