1
MHT CET 2023 10th May Morning Shift
+1
-0

A person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power he should

A
increase the wavelength of light.
B
increase the refractive index of the medium between the object and objective lens.
C
decrease the focal length of the eyepiece.
D
decrease the diameter of the objective lens.
2
MHT CET 2023 10th May Morning Shift
+1
-0

In Young's double slit experiment the separation between the slits is doubled without changing other setting of the experiment to obtain same fringe width, the distance 'D' of the screen from slit should be made

A
$$\frac{\mathrm{D}}{2}$$
B
$$\frac{\mathrm{D}}{\sqrt{2}}$$
C
$$2 \mathrm{D}$$
D
$$4 \mathrm{D}$$
3
MHT CET 2023 10th May Morning Shift
+1
-0

Two sources of light $$0.6 \mathrm{~mm}$$ apart and screen is placed at a distance of $$1.2 \mathrm{~m}$$ from them. A light of wavelength $$6000\,\mathop A\limits^o$$ used. Then the phase difference between the two light waves interfering on the screen at a point at a distance $$3 \mathrm{~mm}$$ from central bright band is

A
$$6 \pi$$ radian
B
$$3 \pi$$ radian
C
$$4 \pi$$ radian
D
$$5 \pi$$ radian
4
MHT CET 2023 9th May Evening Shift
+1
-0

Light of wavelength ',$$\lambda$$' is incident on a slit of width '$$\mathrm{d}$$'. The resulting diffraction pattern is observed on a screen at a distance '$$D$$'. The linear width of the principal maximum is then equal to the width of the slit if $$D$$ equals

A
$$\frac{d}{\lambda}$$
B
$$\frac{\mathrm{d}^2}{2 \lambda}$$
C
$$\frac{2 \lambda}{\mathrm{d}}$$
D
$$\frac{2 \lambda^2}{d}$$
EXAM MAP
Medical
NEET