Download App

STD 12 - 9. Ray optics abd optical instruments — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 9. Ray optics abd optical instruments4 Marks
Question
A source emits light of wavelength $4700Å, 5400 Å$ and $6500 Å.$ The light passes through red glass before being tested by a spectrometer. Which wavelength is seen in the spectrum.....$\mathop A\limits^o $
✓

Answer

(a) Only red colour will be seen in spectrum.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A car moving with a speed of $40\, km/h$ can be stopped by applying brakes after atleast $2\, m$. If the same car is moving with a speed of $80 \,km/h$, what is the minimum stopping distance............$m$
→
A policeman on duty detects a drop of $10 \%$ in the pitch of the hom of motion of car as it crosses him. If the velocity of sound is $330 \,m / s$. Calculate the speed of the car ........... $m / s$
→
A body of mass 0.5 kg travels in a straight line with velocity $v = k x { }^{ 3 / 2 }$ where $k = 5 ~ m ^{-1 / 2} s ^{-1}$. The work done by the net force during its displacement from $x=0$ to $x=2 m$ is:
→
In Young's double slit experiment, the wavelength of red light is $7800\, Å$ and that of blue light is $5200\, Å$. The value of $n$ for which nth bright band due to red light coincides with $(n + 1)^{th}$ bright band due to blue light, is :
→
A particle executes $SHM.$ Its velocities are $v_1$and $v_2$ at displacement $x_1$ and $x_2$ from mean position respectively. The frequency of oscillation will be
→
A galaxy is moving away from the earth at a speed of $286\, kms ^{-1}$. The shift in the wavelength of a red line at $630\, nm$ is $x \times 10^{-10}\, m$. The value of $x ,$ to the nearest integer, is........

[Take the value of speed of light $c,$ as $3 \times 10^{8}$ $\left. ms ^{-1}\right]$

→
The slope of frequency of incident light and stopping potential graph for a given surface will be
→
A bar magnet has coercivity $4 \times 10^3\, Am^{-1}.$ It is desired to demagnetise it by inserting it inside a solenoid $12 \,cm$ long and having $60$ $turns$. The current that should be sent through the solenoid is......$A$
→
Suppose a pure $Si$ crystal has $5 \times 10^{28}\; atoms \;m ^{-3} .$ It is doped by $1 \;ppm$ concentration of pentavalent $As$. Calculate the number of electrons and holes. Given that $n_{i}=1.5 \times 10^{16} \;m ^{-3}$
→
Two waves are given by ${y_1} = a\sin (\omega t - kx)$ and ${y_2} = a\cos (\omega \,t - kx)$ The phase difference between the two waves is
→