List of top Physics Questions on Ray optics and optical instruments asked in MET

Figure shows an irregular block of material of refractive index \(\sqrt{2}\). A ray of light strikes the face AB as shown in figure. After refraction, it is incident on a spherical surface CD of radius of curvature 0.4 m and enters a medium of refractive index 1.514 to meet PQ at E. Find the distance OE upto two places of decimal.

Graph of image position \(v\) vs object position \(u\) for convex lens is given. Find focal length.

Object at 20 cm from plano-convex lens (f = 15 cm), plane surface silvered. Find image position.

A biconvex lens forms circular image of sun of radius \(r\). Find relation with focal length \(f\).

Simple pendulum of length \(l\) has a maximum angular displacement \(\theta\). The maximum kinetic energy of the bob is

The plano-convex lens of focal length \(20\ \text{cm}\) and \(30\ \text{cm}\) are placed together to form a double convex lens, the final focal length will be

A fish at a depth of 12 cm in water is viewed by an observer on the bank of a lake. To what height the image of this fish is raised? (Refractive index of lake water \( n = \frac{4}{3} \))

A thin prism \( P_1 \) of angle 4° and refractive index 1.54° is combined with another thin prism \( P_2 \) of refractive index 1.72 to produce dispersion without deviation. The angle of \( P_2 \) is

The IUPAC name of \( [Co(NH_{3})_{5}ONO]^{2+} \) ion is

The oxidation state of Fe in the brown ring complex: \( [Fe(H_{2}O)_{5}NO]SO_{4} \) is

If \( f : [2,3] \rightarrow \mathbb{R} \) is defined by \( f(x) = x^{3 + 3x - 2} \), then the range of \( f(x) \) is contained in the interval

The focal length of a convex lens is minimum for:

A convex lens of focal length 20 cm is in contact with a concave lens of focal length 40 cm. The power of the combination is:

The rainbow is formed due to: