Q:

The term photon refers to

A) light ray	B) sub atomic particle
C) radiation	D) None of the above

Answer & Explanation Answer: B) sub atomic particle

Explanation:

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force. The photon has zero rest mass and always moves at the speed of light within a vacuum.

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Q:

Which planet is known as the Morning Star or the Evening Star?

A) Jupiter	B) Venus
C) Mercury	D) Saturn

Answer & Explanation Answer: B) Venus

Explanation:

Venus planet is known as the Morning Star or the Evening Star.

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Q:

What are the two kinds of Rotatory motion?

A) Spin and Vibrational motion	B) Spin and Projectile motion
C) Spin and Orbital motion	D) Spin and Translatory motion

Answer & Explanation Answer: C) Spin and Orbital motion

Explanation:

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Q:

Which of these is true of all simple machines?

A) these make work easier	B) work input > work output
C) Both A & B	D) None of the above

Answer & Explanation Answer: C) Both A & B

Explanation:

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Q:

Rayon is chemically

A) Glucose	B) Amylase
C) Cellulose	D) Pectin

Answer & Explanation Answer: C) Cellulose

Explanation:

Rayon is a versatile fiber. Rayon is chemically Cellulose. It is widely claimed to have the same comfort properties as natural fibers, although the drape and slipperiness of rayon textiles are often more like nylon. It can imitate the feel and texture of silk, wool, cotton and linen. The fibers are easily dyed in a wide range of colors.

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