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

A magnetic needle placed in uniform magnetic field has magnetic moment of 2 x 10^-2 A·m², and a moment of inertia of 7 .2 x 10^-7 kg·m². It performs 10 complete oscillations in 6 s. What is the magnitude of the magnetic field?

Show that the root means the square speed of the molecules of a gas is directly proportional to the square root of the absolute temperature of the gas.  

Derive the expression for the average pressure of an ideal gas.

The science of measuring temperatures is called?

A group of objects that can form a unit which may have the ability to exchange energy with its surrounding is called what? 

On what basis a thermodynamic system can be classified?

Classify and explain the thermodynamic system. 

The maximum speed of a particle executing S.H.M. is 10 m/s and maximum acceleration is 31.4 m/s². Its periodic time is ______ 

A simple pendulum is inside a spacecraft. What will be its periodic time? 

The period of oscillation of the simple pendulum increases by 20 %, when its length is increased by 44 cm. find its initial length. 

A standing wave is produced on a string fixed at one end with the other end free. The length of the string _____.

A set of tuning forks is arranged in ascending order of frequencies each tuning fork gives 8 beats/s with the preceding one. If the frequency of the first tuning fork is 120 Hz and the last fork is 200 Hz, then the number of tuning forks arranged will be, ______ 

A wave is represented by an equation y = A Sin(Bx + Ct). Given that the constants A, B, and C are positive, can you tell in which direction the wave is moving? 

Why wave motion is doubly periodic?

Find the amplitude of the resultant wave produced due to interference of two waves given as, y₁ = A₁ sin ωt, y₂ = A₂ sin (ωt + ϕ) 

When light travels from an optically rarer medium to an optically denser medium, the speed decreases because of change in ______ 

Light follows wave nature because ______ 

Young’s double-slit experiment is carried out using green, red and blue light, one colour at a time. The fringe widths recorded are W_G, W_R, and W_B respectively then ______ 

The path difference between two waves meeting at a point is (11/4)λ. The phase difference between the two waves is ______

Which of the following cannot produce two coherent sources?