Physics Class 10th

101. The charge on subatomic bodies is called:

A) Atomic Charge

B) Fundamental Charge

C) Elementary charge

D) Fundamental and Elementary charge

102. Matter is made up of:

A) Charge

B) Air

C) Atoms

D) None of the above.

103. The No of Protons and electrons are:

A)  Always Equal

B) Unequal

C) Equal at stable conditions

D) Unequal at stable conditions

104. Electric charge is created in process of charging objects.

A) True

B) False

105. Charges are _______ between objects.

A) Transferred

B) Equal

C) Multiplied

D) Reduced

106. Objects can be charged by:

A) Removal of charges

B) Addition of charges

C) Both A and B

D) none of the above.

107. The Process of addition or removal of charges is called:

A) Reduction

B) Oxidation

C) Electrification

D) None of the above

108. Positive charge means that the object has:

A) More electrons

B) Less Electrons

C) Normal no of electrons

D) Electrons have no relation to the charge.

109. Negative charge on an object means that:

A) it has more electrons

B) it has less electron

C) normal no of electron

D) electrons have no relation to the object.

110. A change in the distribution of electrical charges in an object, caused by the influence of nearby charges is called:

A) Mutual Induction

B) Electrostatics

C) Self Induction

D) Electrostatic Induction.

111. Electroscope is a device used for:

A) Detecting charge

B) Testing charges

C) Both A and B

D) None of the above.

112. Similar charges:

A) Repel each other

B) Attract each other

C) Magnetize each other

D) None of the above.

113. Leaf of Electroscope is made up of:

A) Wood

B) Glass

C) Metal

D) Plastic

114. If we bring a positively charged electrode near the electroscope, the metallic leaf shall:

A) Fall

B) Remain where it is

C) Rise

D) has no relation to charge on electrode.

115. If we add some charge on the metal ball of electroscope, it shall ______ divergence of flexible metal leaf.

A) Increase

B) Decrease

C) Remain same

D) Increase but to a limit

116. The electric force between two stationary point charges is:

A) directly proportional to product of charges

B) Inversely proportional to sq of distance between them

C) is directed along the joining charges.

D) All of the above.

117. Coulomb law can only be applied to:

A) Positive charge

B) Negative charges

C) Point Charges

D) none of the above.

118. FE ¬= k q1q2/r^2 Here k is:

A) Plank Constant

B) Quantum Constant

C) Proportionality Constant

D) None of the above.

119. The coulombs constant k for vacuum in SI unit has the value:

A) 8.12×10^8Nm^2/C^2

B) 9×10^9Nm/C^2

C) 9×10^9Nm^2/C^2

D) none of the above.

120. X= 1/4πꜫ₀:

A) k constant

B) Coulomb

C) N

D) F