Chapter Test: Wave Optics JEE Physics Free MCQs

Spherical wave fronts shown in figure, strike a plane mirror. Reflected  wave fronts will be as shown in

Blocks A & B of mass m each are connected with spring of constant k. Both blocks lie on frictionless ground and are imparted horizontal velocity v as shown when spring is unstretched. Find the maximum stretch of spring.

A point source of light 'S' at a distance d from the screen A produces light intensity I₀ at the centre of the screen. If a completely reflecting mirror M is placed at a distance d behind the source as shown in the figure, find the intensity at the centre of the screen

Optical path difference of waves from two coherent sources at some point in space is 8.723 μm. What will be the result of interference at this point, if the wavelength is 671 nm :

Two atoms interact with each other according to the following force F and potential energy V diagrams. What is their equilibrium separation?

In the ideal double-slit experiment , when a glass-plate (refractive index 1.5) of thickness t is introduced in the path of one of the interfering beams (wave-length λ), the intensity at the position where the central maximum occurred previously remains unchanged. The minimum thickness of the glass-plate is

Two springs of force constant 100 N/m and 150 N/m are in series as shown. The block is pulled by a distance of 2.5 cm to the right from equilibrium position. What is the ratio of work done by the spring at left to the work done by the spring at right. :

In the figure shown, there is a smooth tube of radius 'R', fixed in the vertical plane. A ball 'B' of mass 'm' is released from the top of the tube. B slides down due to gravity and compresses the spring. The end 'C' of the spring is fixed and the end A is free. Initially the line OA makes an angle of 60° with OC and finally it makes an angle of 30° after compression. Find the spring constant of the spring.

Figure shows graph of deviation δ versus angle of incidence for a light ray striking a prism. Angle of prism is

In young's double slit experiment a coordinate axis is printed on the screen. The y co-ordinates of central maxima and 10th maxima are 2cm and 5cm respectively. When the YDSE apparatus is immersed in a liquid of refractive index 1.5, the corresponding y-co-ordinates will be

When a ray of light of frequency 6 ×10¹⁴ Hz travels from water of refractive index 4/3 to glass of refractive index 8/5, its

In a Young’s double-slit experiment, the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in the experiment

Diffraction also refers to

A beam of light consisting of two wavelengths, 650 nm and 520 nm, is used to obtain interference fringes in a Young’s double-slit experiment. The distance between the slit and the screen is 1.4m and the distance between the slits is 0.28mm. Find the distance of the third bright fringe on the screen from the central maximum for wavelength 650 nm.

A beam of light consisting of two wavelengths, 650 nm and 520 nm, is used to obtain interference fringes in a Young’s double-slit experiment. What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide?

Estimate the distance for which ray optics is good approximation for an aperture of 4 mm and wavelength 400 nm.