HSC Science (Computer Science) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Physics

Define angle of contact.

An electron in an atom is revolving around the nucleus in a circular orbit of radius 0.53 A, with a speed of 2 x 10⁶ m/s. Find the resultant orbital magnetic moment and angular momentum of electron.(e = 1.6 x 10^-19 C, m = 9.1 x 10^-31 kg)

A resistance of 3Ω is connected in parallel to a galvanometer of resistance 297Ω. Find the fraction of current passing through the galvanometer.

By increasing the voltage in an electron diffraction tube, the radius of the diffraction rings will ______.

A string of length 0.5 m carries a bob of mass 0.1 kg at its end. If this is to be used as a conical pendulum of period 0.4 π sec, the angle of inclination of the string with the vertical is ______. (g = 10m/s²)

When a sphere rolls without slipping, the ratio of its kinetic energy of translation to its total kinetic energy is ______.

The figure shows part of an electric circuit. The potential difference V_A - V_B is ______. 

For a charged cylindrical conductor of cross-sectional radius R, what is the relation between the surface charge density and linear charge density?

Write about the kinetic friction between the road and the tyres.

Draw a neat labelled diagram to determine unknown resistance using a meter bridge.

Draw a neat labelled diagram of Kelvin's meter bridge circuit for the measurement of galvanometer resistance.

Find the radius of the wire of length 25m needed to prepare a coil of resistance 25Ω. (Resistivity of material of wire is 3.142 x 10^-7Ωm)

A 25 watt lamp is connected to a.c. potential of peak value 100 V. Calculate the rms value of the current.

What is a ripple?

The radius of curvature of road is 60 m. If angle of banking is 27°, find maximum speed with which vehicle can tum along this curve. . (g = 9.8 m/s²)

A photodiode is used in ______.

A body performing uniform circular motion has ______.

A circular loop is placed in a uniform magnetic field. The total number of magnetic field lines passing normally through the plane of the coil is called ______.

Why does a motorcyclist moving along a level curve at high speed have to lean more than a cyclist moving along the same curve at low speed?

A disc of mass 4 kg rolls on a horizontal surface. If its linear speed is 3 m/ s, what is its total kinetic energy?