AIIMS 2019

Assertion : Photodiode and solar cell work
on same mechanism.
Reason : Area is large for solar cell.

Calculate the mean percentage error in five
observations,
80.0, 80.5, 81.0, 81.5, 82

Distance of 5th dark fringe from centre is \(4 \mathrm{~mm}\). If \(D=2 \mathrm{~m}, \lambda=600 \mathrm{~nm}\), then distance between slits is

A light of wavelength \(500 \mathrm{~nm}\) is incident on a Young's double slit. The distance between slit and screen is \(D=1.8 \mathrm{~m}\) and distance between slits is \(d=0.4 \mathrm{~mm}\). If screen moves with a speed of $$4 \mathrm...

Assertion : Distance between position of
bright and dark fringe remain same in YDSE.
Reason : Fringe width, \(\beta=\frac{\lambda D}{d}\)

Assertion : Incoming light reflected by earth
is partially polarised.
Reason : Atmospheric particle polarise the
light.

A string wave equation is given \(y=0.002 \sin (300 t-15 x)\) and mass density is \((\mu=0.1 \mathrm{~kg} / \mathrm{m})\). Then find the tension force in the string.

Two sources of sound S\(_1\) and S\(_2\) are moving
towards and away from a stationary observer
with the same speed respectively. Observer
detects 3 beats per second. Find speed of
sources (approximately).
Given, \(f_1=f_2=500\) Hz, speed o...

If the speed of sound in air is 330 m/s then,
find the number of tones present in an open
organ pipe of length 1 m whose frequency is \(\le\) 1000 Hz.

Initially spring in its natural
length now a block at mass 0.25 kg
is released then find out maximum
force by system on the floor.