List of top Physics Questions

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?
Threshold frequency for a metal is $10^{15} Hz$. If the light of wavelength $4000 \mathring {A}$ falls on its surface, then which of the following statement is correct?
This symbol represents
The working of a dynamo is based on the principle of
The volume of a gas expands by $0.25 \,m ^{3}$ at a constant pressure of $10^{3} \,N / m$. The work done is equal to
The magnetic flux linked with a coil, in webers, is given by the equation: $\phi=5 t^{2}+3 t+16$. The induced e.m.f. in the coil in the fourth second will be
The force acting on a body of mass 10 kg is $ (2\mathbf{\hat{i}}+\mathbf{\hat{j}}\,-\mathbf{\hat{k}}) $ N. If the body is initially at rest. The velocity at the end of the 20 sec is:
The equation of state of some gases can be expressed as $\left(P+\frac{a}{V^{2}}\right)\left(V-b\right)=RT$, where $P$ is the pressure, $V$ is the volume, $T$ is the absolute temperature and $a, b$ and $R$ are constants. The dimensions of $a$ are
In general, the wavelength of microwaves, is
Critical temperature can be defined as the temperature
Calorimeters are made of which of the following?
A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B. At the position MNQ the speed of the ring is v and the potential difference developed across the ring is