Physics questions
20027 published questions with worked solutions.
- SONAR is a device that is used to measure the distance of underwater objects by a ship. Which of the following types of waves...
- Which one of the following statements about the speed of sound waves is not correct?
- A bullet of mass 10 g is horizontally fired with velocity 300 m s ^ -1 from a pistol of mass 1 kg. What is the recoil velocity of...
- A microphone converts
- A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R...
- A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f_1V...
- Two forces of 5·0 N each are acting on a point mass. If the angle between the forces is 60°, then the net force acting on the...
- A railway wagon (open at the top) of mass M_1 is moving with speed v_1 along a straight track. As a result of rain, after some...
- A positive charge is moving towards south in a space where magnetic field is pointing in the north direction. The moving charge...
- Which one of the following statements about X-rays is not true ?
- Sand falls vertically on a conveyor belt at a rate of 0·1 kg/s. In order to keep the belt moving at a uniform speed of 2 m/s, the...
- The power required to lift a mass of 8·0 kg up a vertical distance of 4 m in 2 s is (taking acceleration due to gravity as 10 m/s...
- One block of 2·0 kg mass is placed on top of another block of 3·0 kg mass. The coefficient of static friction between the two...
- A mass is attached to a spring that hangs vertically. The extension produced in the spring is 6 cm on Earth. The acceleration due...
- In an electric circuit, a wire of resistance 10 Ω is used. If this wire is stretched to a length double of its original value,...
- An electric bulb is rated as 220 V and 80 W. When it is operated on 110 V, the power rating would be :
- In the dispersion of white light by a common glass prism, which one among the following is correct ?
- Which one among the following is true for the speed of sound in a given medium ?
- Which one of the following telescopes contains only mirrors ?
- The streaming of light beams coming from the Sun through trees is said to have suggested that light travels in straight line. The...