Maharashtra HSC Physics Answer Key 2026 (Out)- Solved Key by Subject Experts, Question Paper PDF, Exam Analysis

When a number of droplets coalesce to form a single drop, the total surface area of the drop

A) Decreases

What is beta plus decay?

Ans. In beta plus decay, a proton gets converted to neutronby emitting a positron & nuetriono

The process in which heat is neither absorbed nor released by a system is called?

D) Adiabatic

State the formula for electric field intensity due to uniformly charged spherical shell.

Ans. E= σR^2/E0E^2

Name an instrument for measurement of EMF of a cell?

Ans. Potentiometer

In Young's double slit experiment, width of the two slits are in the ratio 25:1. Calculate the ratio of amplitudes

Ans. 5:1

In series LCR circuit for Xl>Xc, tan θ will be?

C) Positive

In an ideal gas, molecules possess

A) Only kinetic energy

If the tension in sonometer wire is increased by 21% compare the initial frequency with the later

Ans. 10:11

If the frequency of incident radiation is increased above threshold frequency, keeping intensity and potential constant then the photoelectric current

C) Remains safe

Define second's pendulum

Ans. T=2 sec

A metal surface is illuminated by photons of energy 5eV and 2.5eV respectively. The ratio of their wavelengths of emitted radiation is?

B) 1:2

A conducting rod of length 'l', rotates about one of its ends in a uniform magnetic field 'B', with a constant angular velocity, 'ω'. If the plane of rotation is perpendicular to 'B', the e.m.f. induced between the ends of the rod is?

A) 1/2Bωl^2

A bar magnet of magnetic moment 10 Am^2 has a cross-sectional area of 2.5x10^-4 m^2. If the intensity of magnetisation of magnet is 10^5 A/m, the length of the bar magnet is?

B) 4 cm

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