SSLC (English Medium) कक्षा १० - Tamil Nadu Board of Secondary Education Question Bank Solutions

A small bulb is placed at the principal focus of a convex lens. When the bulb is switched on, the lens will produce

Which of the following lens would you prefer to use while reading small letters found in a dictionary?

Explain the rules for obtaining images formed by a convex lens with the help of ray diagram.

An object is placed at a distance 20cm from a convex lens of focal length 10cm. Find the image distance and nature of the image.

An object of height 3cm is placed at 10cm from a concave lens of focal length 15cm. Find the size of the image.

According to Boyle’s law, the shape of the graph between pressure and reciprocal of volume is _______.

State Boyle’s law

State-the law of volume

Calculate the coefficient of cubical expansion of a zinc bar. Whose volume is increased 0.25 m³ from 0.3 m³ due to the change in its temperature of 50K?

The frequency, which is audible to the human ear is

If a sound wave travels with a frequency of 1.25 × 10⁴ Hz at 344 ms^–1, the wavelength will be

A whistle giving out a sound of frequency 450 Hz, approaches a stationary observer at a speed of 33 ms^–1. The frequency heard by the observer is (speed of sound = 330 ms^–1) ______.

What is the audible range of frequency?

What will be the frequency sound having 0.20 m as its wavelength, when it travels with a speed of 331 ms^–1?

A sound wave has a frequency of 200 Hz and a speed of 400 ms^–1 in a medium. Find the wavelength of the sound wave.

A person who is sitting at a distance of 400 m from a source of sound is listening to a sound of 600 Hz. Find the time period between successive compressions from the source?

_______ isotope is used for the treatment of cancer.

Increasing crops : Radio phosphorous, Effective functioning of heart : _____

Which radioactive material is present in the ore of pitchblende?

Write any two elements which are used for inducing radioactivity?