Electric charges and bar magnets have the same properties in all aspects. ______

Question

Electric charges and bar magnets have the same properties in all aspects. ________ True or _______ False Ampere's Law for a long wire states that magnetic field is directly proportional to current and inversely proportional to the distance for the wire. __________ True or _______ False Ohm's Law is true regardless of the nature of the electric circuit. ____________ True or ___________ False Coulomb's Law defines electric force between two charges and the distance between them. _________True or _________ False A white light is dispersed into rainbow colors because each of the colors have different frequencies. _________ True or _______ False As light travels from one medium to the next medium its frequency remains constant. ________ True or ________ False Two wires carry the same current in the different direction attract each other. _________ True or _________ False A ray of light strikes a plane mirror perpendicular (or normal) to the mirror. What is the angle of reflection? 360^degree 0^degree 180^degree 90^degree None A beam of light traveling in air strickes the surface of mineral oil at an angle of 45^degree with the normal to the surface. If the index of refraction is 1.515, with what speed does the light travel in the mineral oil? 1.98 times 10^8 m/s 2.94 times 10^8 m/s 1.98 times 10^6 m/s 4.23 times 10^7 m/s None when^32 _ 15 P decays to^32 _16 S, which of the following particles are emitted? proton alpha particle electron gamma ray antineutrino

Explanation / Answer

8.

Angle of reflection = 0 deg

Because angle is measured from reflected ray to surface normal.

Correct option is B.

9.

speed of light in oil will be:

v = c/n

v = 3*10^8/1.515 = 1.98*10^8 m/sec

Correct option is A.

10.

32P15 ---> 32S16 + AXB

Using Atomic no. balance

32 = 32 + A

A = 0

Using proton balance

15 = 16 + B

B = -1

emitted particle will be

0e-1 = electron

Correct option is C.

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