HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Physics

What are the uses of spectrometer?

What is myopia?

What is the remedy of myopia?

What is hypermetropia?

What is the remedy of hypermetropia?

What is presbyopia?

What is astigmatism? What is its remedy?

Discuss about simple microscope and obtain the equations for magnification for near point focusing and normal focusing.

Obtain the equation for resolving the power of the microscope.

Discuss about astronomical telescope.

Mention different parts of the spectrometer.

Explain the preliminary adjustments of the spectrometer.

Explain the experimental determination of the material of the prism using a spectrometer.

A compound microscope has a magnification of 30. The focal length of eye piece is 5 cm. Assuming the final image to be at least distance of distinct vision, find the magnification produced by the objective.

A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. What is the distance between the first dark fringe on either side of the central bright fringe?

A compound microscope has a magnifying power of 100 when the image is formed at infinity. The objective has a focal length of 0.5 cm and the tube length is 6.5 cm. What is the focal length of the eyepiece.

What are the shapes of wavefront for source at infinite?

I₀ is the intensity of light existing between two cross Polaroids kept with their axes perpendicular to each other. A third polaroid is introduced between them. What must be the angle between the axes of the first and the newly introduced polaroid to get the maximum light from the whole arrangement?

The near point and the far point for a person are 50 cm and 500 cm, respectively. Calculate the power of the lens the person should wear to read a book held in hand at 25 cm. What maximum distance is clearly visible for the person with this lens on the eye?

What is mass defect?