Class 11 MCQ test

Si unit of surface tension

• Nm

• Nm2

• Nm3

• N/m

Bernoulli equation based on law of conservation of

• Mass

• Energy

• Charge

• Time

Si unit of pressure is

• Pascal

• N/m2

• Both

• None

If a liquid doesn't wet glass then angle of contact is

• Zero

• Right angle

• Acute

• Obtuse

The velocity of efflux of a liquid through an orifice in the bottom of the tank doesn't not depends on

• Acceleration due to gravity

• Height

• Size of orifice

• None of these

The modulus of rigidity of ideal liquid is

• Infinity

• Zero

• Unity

• Some finite value

A spring is strecthed by applying a load to it's free end.

The strain produced in the spring is

• Volumetric

• Shear

• Longitudinal and shear

• Longitudinal

The tension in the strong will be least in

• A

• B

• C

• Same in all