1
MHT CET 2021 24th September Evening Shift
+1
-0

White light consists of wavelengths from $$480 \mathrm{~nm}$$ to $$672 \mathrm{~nm}$$. What will be the wavelength range when white light is passed through glass of refractive index 1.6?

A
$$420 \mathrm{~nm}-672 \mathrm{~nm}$$
B
$$300 \mathrm{~nm}-480 \mathrm{~nm}$$
C
$$300 \mathrm{~nm}-420 \mathrm{~nm}$$
D
$$300 \mathrm{~nm}-672 \mathrm{~nm}$$
2
MHT CET 2021 24th September Evening Shift
+1
-0

A monochromatic ray of light travels through glass slab and water column. The number of waves in glass slab of thickness $$4 \mathrm{~cm}$$ is the same as in water column of height $$5 \mathrm{~cm}$$. If refractive index of glass is $$\frac{5}{3}$$ then refractive index of water is

A
1.33
B
1.30
C
1.25
D
1.10
3
MHT CET 2021 24th September Morning Shift
+1
-0

The radii of curvature of both the surfaces of a convex lens of focal length '$$\mathrm{f}$$' and focal power '$$\mathrm{P}$$' are equal. One of the surfaces is made plane by grinding. The new focal length and focal power of the lens is respectively

A
$$\frac{1}{2}, 2$$
B
$$2 \mathrm{f}, \frac{\mathrm{P}}{2}$$
C
$$\sqrt{\frac{2}{f}}, \sqrt{\frac{P}{2}}$$
D
$$\frac{2 \mathrm{f}}{3}, \frac{2}{3} \mathrm{P}$$
4
MHT CET 2021 24th September Morning Shift
+1
-0

A glass slab has refractive index '$$\mu$$' with respect to air and the critical angle for a ray of light in going from glass to glass to air is '$$\theta$$' If a ray of light is incident from air on the glass with angle of incidence '$$\theta$$', then the corresponding angle of refraction is

A
$$\sin ^{-1}\left(\frac{1}{\sqrt{\mu}}\right)$$
B
$$\sin ^{-1}\left(\frac{1}{\mu}\right)$$
C
$$\sin ^{-1}\left(\frac{1}{\mu^2}\right)$$
D
$$90^{\circ}$$
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