Download App

Ray Optics and Optical Instruments — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsRay Optics and Optical Instruments1 Mark
MCQ
How should people wearing spectacles work with a microscope?
  • A
    They should keep on wearing their spectacles.
  • B
    They should never use the microscope.
  • ✓
    They should take off their spectacles.
  • D
    They may either put on their spectacles or they may take off their spectacles.
✓

Answer

Correct option: C.
They should take off their spectacles.

If operators using a microscope usually wear spectacles $($glasses$)$ for activities such as working at their $PC$, they often need to remove them when looking through a microscope so they can align their eyes correctly with the eyepieces.

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

More "M.C.Q (1 Marks)" from Ray Optics and Optical Instruments→Ray Optics and Optical Instruments — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Two identical short bar magnets, each having magnetic moment $M,$ are placed a distance of $2d $ apart with axes perpendicular to each other in a horizontal plane. The magnetic induction at a point midway between them is
→
When plate voltage in diode valve is increased from $100\, volt$ to $150 \,volt$ then plate current increases from $7.5\, mA$ to $12\, mA$. The dynamic plastic resistance will be....$k\,\Omega$
→
Two light waves of wavelengths $800$ and $600\,nm$ are used in Young's double slit experiment to obtain interference fringes on a screen placed $7\,m$ away from plane of slits. If the two slits are separated by $0.35\,mm$, then shortest distance from the central bright maximum to the point where the bright fringes of the two wavelength coincide will be $.............mm$.
→
Sun light falls normally on a surface of area $36\,cm ^{2}$ and exerts an average force of $7.2 \times 10^{-9}\,N$ within a time period of $20$ minutes. Considering a case of complete absorption, the energy flux of incident light is.
→
A ray of light $AO$ in vacuum is incident on a glass slab at angle $60^o$ and refracted at angle $30^o$ along $OB$ as shown in the figure. The optical path length of light ray from $A$ to $B$ is
→
The amount of charge flowing through the wire in $1s$ if the current flowing $1$ A then the charge flowing will be:
→
Which of the following figure represents the variation of particle momentum and the associated de-Broglie wavelength
→
When a silicon $PN$ junction is in forward biased condition with series resistance, it has knee voltage of $0.6\, V$. Current flow in it is $5\, mA$, when $PN$ junction is connected with $2.6V$ battery, the value of series resistance is.....$ \Omega$
→
The $e.m.f$. induced in a coil of wire, which is rotating in a magnetic field, does not depend on
→
Resistance of the wire is measured as $2\,\Omega$ and $3\,\Omega$ at $10^{\circ}C$ and $30^{\circ}C$ respectively. Temperature cocoefficient of resistance of the material of the wire is............$^{\circ}C ^{-1}$
→