JEE Physics - MCQ Practice Questions

Which of the following represents the correct relationship for the critical angle θc for total internal reflection?

An object is placed 15 cm in front of a concave mirror with focal length 10 cm. The magnification of the image formed is:

A lens has power +5 D. A second lens of power -2 D is placed in contact with it. The equivalent focal length of the combination is:

The refractive index of a material is found to be 1.5. The speed of light in this material is:

A plane mirror is moved towards a stationary object at a speed of 5 m/s. The speed at which the image approaches the object is:

Light of wavelength 500 nm in vacuum enters a medium of refractive index 1.5. The wavelength in the medium is:

A concave mirror of focal length 20 cm forms a real, inverted, and magnified image. The object must be placed:

Critical angle for a medium is 45°. Its refractive index is:

When white light passes through a prism, violet light deviates more than red light because:

A lens of power -5 diopters is used to correct vision. This lens is:

The resolving power of a microscope increases when: