Physics MCQs for Class 9 with Answers
Which following works on Pascal’s law?
Screw gauge
Vernier callipers
Hydraulic press
Wedge
According to Archimedes principle the density of a substance is determined by using formula
D = w1/w2 + w1 x p
D = w1w2/w2- w1 x p
D = w1/w2 – w1 x p
D = w1w2/w2- w1 x p
Such state of matter which has no specific shape is called:
Solid
Liquid, Gas
Gas
Solid and plasma
Ship and boats are designed on the principal of
Charge
Densities
Volume
Floatation
S.I unit of young’s modulus is:
Nm
Nm-1
Nm-2
Nm-3
The formula of pressur is:
Fx a
A/F
F/A
None of these
The unit of stress is:
Newton
Pascal
Nm-2
m3
Plasma is a gas which consists of:
Negative ions
Positive ions
Neutral ions
All of htese
Which of the substances is the lightest one?
Copper
Mercury
Aluminium
Lead
Tensile strain produces the change in the object.
Length
Volume
Area
Density
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