HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Physics

What is the surface film? 

What are cohesive forces?

State properties of an ideal fluid.

Does the angle of banking depend on the mass of the vehicle?

During ice ballet, while in the outer rounds, why do the dancers outstretch their arms and legs.

A hollow sphere has a radius of 6.4 m. what is the minimum velocity required by a motorcyclist at the bottom to complete the circle. 

A bend in a level road has a radius of 100m. find the maximum speed which a car turning this bend may have without skidding if the coefficient of friction between the tires and road is 0.8. 

Derive an expression for maximum safety speed with which a vehicle should move along a curved horizontal road. State the significance of it.

A bucket containing water is tied to one end of a rope 5 m long and it is rotated in a vertical circle about the other end. Find the number of rotations per minute in order that the water in the bucket may not spill.

A body weighing 0.5 kg tied to a string is projected with a velocity of 10 m/s. The body starts whirling in a vertical circle. If the radius of the circle is 0.8 m, find the tension in the string when the body is at the top of the circle.

Derive an expression for the kinetic energy of a rotating body with uniform angular velocity. 

A railway track goes around a curve having a radius of curvature of 1 km. The distance between the rails is 1 m. Find the elevation of the outer rail above the inner rail so that there is no side pressure against the rails when a train goes around the curve at 36 km/hr. 

What is a conical pendulum? Obtain an expression for its time period

Obtain an expression for maximum safety speed with which a vehicle can be safely driven along a curved banked road. 

If the absolute temperature of a body is doubled, the power radiated will increase by a factor of ______ 

Show that for monoatomic gas the ratio of the two specific heats is 5:3. 

Show that for diatomic gas the ratio of the two specific heats is 7:5.

The magnetic susceptibility is given by ______ 

The relation between relative permeability and magnetic susceptibility is given by ______ 

If an electron of charge (-e) and mass m_e revolves around the nucleus of an atom having an orbital magnetic moment m₀, then the angular momentum of the electron is ______