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A) 10

B) 100

C) 1000

D) 10000

A) Frequency

B) Period

C) Wavelength

D) Amplitude

A) Pitch

B) Loudness

C) Quality

D) Intensity

## 84. Humans can hear sound that is:

A) Less than 20Hz

B) Between 20 Hz and 20 kHz

C) Greater than 20kHz

D) None

A) 331m/s

B) 345 m/s

C) 354m/s

D) 362 m/s

A) Summer

B) Winter

C) Spring

D) Space

A) Solid

B) Liquid

C) Gas

D) Vacuum

A) Motion

B) Rest

C) Both A and B

D) None

## 89. After running a plastic comb through our hair, it attracts small pieces of paper. This is an example of

A) Electrostatic induction

B) Kinematics

C) Magnetism

D) Dynamics

## 90. According to atomic theory, atoms and molecules hold together due to:

A) Magnetic Forces

B) Chemical Forces

C) Electrostatic Forces

D) None of the above

A) Velocity

B) Mass

C) Gravity

D) Magnetism

## 92. An object with less mass is said to have a______ inertia as compared to an object of greater mass.

A) Smaller

B) Larger

C) Equal

D) Mass has no relation with inertia

## 93. Unit of Charge is:

A) Kg

B) s

C) C

D) None of the above

A) One

B) Two

C) Three

D) Four

## 95. A glass rod rubbed with silk cloth brought near a suspended rubber rod rubbed with fur, _________ each other.

A) Attract

B) Repel

C) None of the above

D) Both rods shall posses no charge

A) True

B) False

## 97. Different charges always ______ each other.

A) Attract each other

B) Repel each other

C) Magnetize each other

D) None

## 98. The charge on electron is:

A) -1.6×10^-19

B) 1.6×10^19

C) 1.6×10^19

D) None of the above

## 99. Mass of proton is:

A) 9.109×10^-31

B) 1.673×10^-27

C) 1.675×10^-27

D) None the above

## 100. The neutron has:

A) Positive charge

B) No Charge

C) Negative charge

D) Bipolar