Important Guess of Physics Class 10

• Very Important Multiple Choice Questions of full book Physics in Urdu and English Medium class 10 from previous 20 years past papers of all Punjab Boards.
• Important Short and Long Questions of Physics in Urdu and English Medium class 10 from previous 20 years past papers of all Punjab Boards.
• If the length of a simple pendulum is doubled, what will be the change in its time period?
• Define spring constant. Write its formula.
• If time period of simple pendulum is 1.99s then find its frequency.
• What is the difference between vibration and frequency?
• Download the 10th class physics guess today and start your exam preparation without any hassle.
• If a ball is suddenly thrown from the roof, then it will bounce. Is this motion simple harmonic or not?
• On what factors does the loudness of sound depend? Write the names.
• What are the units of loudness? Why do we use logarithmic scale to describe the range of the sound intensities we hear?
• Why two tins can with a string stretched between them could be better way to communicate than merely shouting through the air?
• What is the speed of sound in brass and iron at 25°C.
• How does a converging lens form a virtual image of a real object? How does diverging lens can form a real image of a real objects?
• What changes in the charge storing capacity of a capacitor occur when we increase the area of the plates of the capacitor?
• Write the principle to find the direction of force acting on a current carrying conductor placed in a magnetic field.
• What is meant by intensity of magnetic field?
• Which device is used for converting electrical energy into mechanical energy? On what principle it works?
• Write the names of the components of computer-based information system.
• Define simple harmonic motion. Prove that motion of mass attached to a spring on a horizontal surface is simple harmonic motion.
• Derive a relationship between velocity, frequency and wavelength of a wave. Write a formula relating velocity of a wave to its time period and wavelength.
• What are damped oscillations? How damping progressively reduces the amplitude of oscillation?
• If 100 waves pass through a point of a medium in 20 seconds, what is the frequency and the time period of the wave? If its wavelength is 6cm, calculate the wave speed.
• Why ultrasound is useful in medical field?
• How can we determine the location of objects lying deep in the sea water or on the surface of water?
• Differentiate between ultrasound and infrasound.
• Explain the reflection of light through plane surface.
• Differentiate between angle of incidence and angle of reflection.
• Differentiate between incident ray and reflected ray.
• Differentiate between regular and irregular reflection.
• Why or why not concave mirrors are suitable for makeup?
• Explain the concave mirror and convex mirror by diagram.
• State the laws of refraction.
• Write Snell’s law. And write its formula.
• What are the values of refractive index for water and ice?
• What is meant by the term total internal reflection?
• State the conditions for total internal reflection?
• What is critical angle?
• What is optical fiber?
• Differentiate between core and cladding of optical fiber.
• How light travel in an optical fiber using the law of total internal reflection?
• What is light pipe? How it works?
• Write the function of cyctoscope and gastroscope.
• Define power of a lens and its units.
• What is convex or converging lens? Explain by diagram.
• What is optical center?
• Define principle focus and focal length.
• What is meant by power of a lens? Also write its formula.
• The power of a convex lens is 5D. Find its focal length.