List of top Physics Questions

Sky seen from earth appears blue because of
When light passes form one medium to another, there is a change in
Figures below show four ways of making a regular hexagon out of wires of two different kinds P, Q with current beafls at the middle of opposite wires, the magnetic field at the centre of the hexagon is not zero in
Thermocouple thermometer is based on
A metallic solid sphere is placed in a uniform electric field. Which path, the lines of force follow as shown in figure?
A nucleus emits one $\alpha$-particle and forms a new nucleus. The mass and charge of the new nucleus is changed in one of the following way
The forces, which meet at one point but their lines of action do not lie in one plane, are called
The bulk modulus of a fluid is inversely proportional to:
A galvanometer of 25 ohms and having full scale deflection for a current of 10 mA is changed into voltmeter of range 100 volts by connecting a resistance R in series with the galvanometer. The resistance R in ohms is:
Which of the following types of wheels of same mass and radius will have largest moment of inertia?
The tension in piano wire is 10 kg. What should be the tension in the wire to produce a note of double the frequency?
Water is supplied to different localities from a tank. The pressure of water is:
The ferromagnetic substance is converted into paramagnetic substances:
A moving cycle can be easily balanced. This can be explain by the law of conservation of:
Which of the following is dimensionless quantity?
Light year is a unit of:
The velocity of electromagnetic waves in free space is $3 \times 10^{8} \,m / sec$. The frequency of a radio wave of wave length $150\, m$, is
The resolving power of a telescope increases when:
The H$_{\alpha}$ line of hydrogen
The formation of canal system in sponges is due to
The extension in a string, obeying Hooke's law, is x. The speed of transverse wave in the stretched string is v. If the extension in the string is increased to 1.5 x, the speed of transverse wave will be
The basic principle involved in hydrogen bomb is:
Light travels through a glass plate of thickness t and having a refractive index p. If c is the velocity of light in vacuum, the time taken by light to travel this thickness of glass is
Which of the following is a non-conservative force?
Which of the following is true regarding projectile motion?