Physics MCQs

a) True
b) False

If an object is positively charged, theoretically the mass of the object ______

a) Increases slightly by a factor of 9.11*10-31Â kg
b) Decreases slightly by a factor of 9.11*10-31Â kg
c) Remains the same
d) May increase or decrease

Why is gold used in the Gold-leaf electroscope?

a) Gold is easily available in nature
b) Gold is malleable
c) Gold is conducting in nature
d) Gold is cheap

What happens to the plates of the apparatus if we measure alternating charge using a Gold-leaf oscilloscope?

a) It doesnâ€™t diverge at all
b) It diverges momentarily
c) The plates give a proper divergence
d) The degree of divergence increases and decreases repeatedly

Dr. Gilbert tried to hold a brass rod by hand and induce static electricity in it by friction. Why did he fail?

a) Static electricity is induced only on insulators while brass is conducting
b) The induced static charge flew through his hand and body to the ground
c) The static charge was not produced at all
d) It is not possible to induce static electricity by friction

Gold-leaf electroscope can be used _______

a) Only to detect the presence of charge
b) To detect the presence of charge as well as its nature (positive or negative)
c) To measure the surface charge density
d) To measure current

a) 3*109
b) 3*108
c) 1.602*10-19
d) 2*109

a) 6.25*1021
b) 6.25*1020
c) 6.25*1025
d) 6.25*1023

Two equally charged spheres attract each other. Now if they touch each other then they will _____

a) Attract each other with the same amount of force
b) Repel each other
c) Attract each other with less amount of force
d) Donâ€™t attract or repel

Which among the following cannot be the charge of a charged body?

a) 4.8*10-14Â Coulomb
b) 6.4*10-15Â Coulomb
c) 5*10-14Â Coulomb
d) 3.2*10-10Â Coulomb

error: Content is protected !!