Practice Physics Questions and Answers

• The energy of wind is-
•  Photovoltaic cells are: 
• Which of the following is the best fire-extinguisher?
• During __________ motion of an object along a straight line, the change in velocity of the object for any time interval is zero.
• The motion of a freely falling body is an example of ______________ accelerated motion.
• The SI unit of electric current is:
• Which pioneer scientist used radio waves to transmit signals over distances of several kilometres in the 1890s?
• The blades of a moving jet engine are an example of:
• Which of the following types of waves has the smallest wavelength?
• The energy possessed by a body due to its position or shape is known as:
• Why does the pole star appear to be fixed in one place while all other stars seem to move from east to west?
• What is the SI unit of power?
• What is the speed of light in air?
• A ray of light from the object parallel to principal axis of a concave lens, after refraction appears to diverge from which point on the same side of the l...
• What does friction cause to the screws, ball bearings and soles of the shoes?
• ______ is an important metal to form amalgam.
• What is the SI unit of G — the universal gravitation constant?
• A concave lens has a focal length 15 cm. If the object is placed at 30 cm from the lens, what is the image distance?
• Which device uses ultrasonic waves for getting images of internal organs of human body?
• Why is red colour preferred for danger signal lights?
• Which of the following determines the loudness or softness of the sound?
• Which of the following is the time taken for one complete oscillation of a sound wave in the density of the medium?
• Which of the following is equal to a measurement of 1 mA?
• The amplitude of the sound wave depends on the
• What is the power of a lens whose focal length is 1 m?
• If an object starts moving and if there is no friction at all, what happens?
• What is the SI unit for measuring electric current?
• Which instrument is commonly used to measure atmospheric pressure?
• With reference to the types of electromagnetic waves, consider the following statements: (I) Radio waves have the highest wavelength range among Microwave,...
• Consider the following statements: 1. A flute of smaller length produces waves of lower 2. Sound travels in rocks in the form of longitudinal elastic waves...
• This relationship between the angles of incidence and refraction and the indices of refraction of the two media is known as ________.
• Which of the following instruments is correctly matched with its function? I) Voltmeter - Measures potential difference  II) Ammeter - Measures electric c...
• Which of the following statements best describes the relationship between static friction and the normal force?
• The Doppler Effect primarily refers to changes in what aspect of waves?
• Which material is primarily responsible for the elasticity found in leggings and athletic apparel?
• Which function is performed by rectifiers?
• What is the device used to amplify and modulate microwave frequency signals called?
• Which physical property is considered dimensionless?
• Which pioneer of the late 19th century is credited with using radio waves for signal transmission over several kilometers?
• Which material has the lowest refractive index?