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

The critical angle for light going from medium A into medium B is $\theta$. The speed of light in medium A is $V_A$. What is the speed of light in medium B?
A biconvex lens ($R_1 = R_2 = 30\ \text{cm}$) has focal length equal to the focal length of a concave mirror. The radius of curvature of the concave mirror is [Refractive index of material of lens $= 1.6$]
An object is located on a wall, its image of equal size is to be obtained on a parallel wall with the help of a convex lens. The lens is placed at a distance '$d$' in front of the second wall. The required focal length of the lens is
The critical angle for light going from medium '$x$' to medium '$Y$' is $\theta$. The speed of light in medium '$x$' is $v$. The speed of light in medium '$Y$' is
When a photon enters glass from air, which one of the following quantities does not change?
'Circle of least confusion' refers to which one of the following defects occurring in images formed by mirrors or lenses?
A particle executes linear S.H.M. The mean position of oscillation is at the principal axis of a convex lens of focal length 8 cm. The mean position of oscillation is at 14 cm from the lens with amplitude 1 cm. The amplitude of oscillating image of the particle is nearly
A glass cube of length 24 cm has a small air bubble trapped inside. When viewed normally from one face it is 10 cm below the surface. When viewed normally from the opposite face, its apparent distance is 6 cm. The refractive index of glass is
A ray of light is incident at an angle 'i' on one face of thin prism. The ray emerges normally from the other face. Refractive index of the glass prism is 'n' and angle of prism is 'A'. The value of 'i' is
A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens material. Then its focal length will
The refractive index of glass is 1.5 and that of water is 1.33. The critical angle for a ray of light going from glass to water is
Inside a vessel filled with liquid a converging lens is placed as shown in figure. The lens has focal length $15\ \text{cm}$ when in air and has refractive index $\frac{3}{2}$. If the liquid has refractive index $\frac{9}{5}$, the focal length of lens in liquid is
A convex lens of focal length $f$ is used to form an image whose size is one fourth that of size of the object. Then the object distance is
A ray of light travels from a denser medium to a rarer medium. The reflected and the refracted rays are perpendicular to each other. If 'r' and '$r_1$' are the angle of reflection and refraction respectively and 'C' is the critical angle, then the angle of incidence is
A glass cube of length 24 cm has a small air bubble trapped inside. When viewed normally from one face it is 10 cm below the surface. When viewed normally from the opposite face, its apparent distance is 6 cm. The refractive index of glass is
A ray of light is incident at an angle 'i' on one face of thin prism. The ray emerges normally from the other face. Refractive index of the glass prism is 'n' and angle of prism is 'A'. The value of 'i' is
For a prism, \( A \) is the angle of the prism, \( \delta \) is the angle of deviation, \( \mu \) is the refractive index of the material of a prism, the refractivity of the material of a prism is
When a lens of refractive index $\mu_1$ is placed in a liquid of refractive index $\mu_2$, the lens looks to be disappeared only if
A bar magnet has pole strength of 15 A m and magnetic length 1 cm. What is the magnetic induction produced by it at a distance of 50 cm from either pole? (Given: \( \dfrac{\mu_0}{4\pi} = 10^{-7} \, \text{Wb A}^{-1}\text{m}^{-1} \))
When a ray of light is refracted from one medium to another, then the wavelength changes from 6000 Å to 4000 Å. The critical angle for the interface will be:
On mixing a highly soluble impurity in water, the surface tension \(T\) and angle of contact \(\theta\)
The resultant of two vectors \(\vec{P}\) and \(\vec{Q}\) is \(\vec{R}\). When the direction of \(\vec{Q}\) is reversed, the resultant is given by \(\vec{S}\). Which one of the following is true for vectors \(\vec{R}\) and \(\vec{S}\)?
A concave mirror of focal length \(f_1\) is placed at a distance \(d\) from a convex lens of focal length \(f_2\). A parallel beam of light coming from infinity parallel to principal axis falls on the convex lens and then after refraction falls on the concave mirror. If it is to retrace the path, the distance \(d\) should be
A thin prism \( P \) of angle 4° made up of glass of refractive index 1.48 is combined with another prism \( Q \) made up of glass of refractive index 1.64 to produce dispersion without deviation. The angle of prism \( Q \) is
The magnifying power of a simple microscope is inversely proportional to its focal length \( f \) and it is maximum when image is formed at \( D = \) Distance of distinct vision (DDV).