Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
A body of mass $60 \text{ g}$ experiences a gravitational force of $3.0 \text{ N}$ when placed at a particular point. The magnitude of the gravitational field intensity at that point is:
Planck's constant ($h$), speed of light in vacuum ($c$) and Newton's gravitational constant ($G$) are three fundamental constants. Which of the following combinations of these has the dimensions of length?
The energy required to break one bond in DNA is $10^{-20}\text{ J}$. This value in eV is nearly:
Which one of the following represents all isoelectronic species?
The work done to raise a mass $m$ from the surface of the earth to a height $h$, which is equal to the radius of the earth, is:
A spherical planet has a mass $M_p$ and diameter $D_p$. A particle of mass $m$ falling freely near the surface of this planet will experience acceleration due to gravity equal to:
If energy ($E$), velocity ($v$) and time ($T$) are chosen as the fundamental quantities, the dimensional formula of surface tension will be
The quantities which have the same dimensions as those of solid angle are:
What is the maximum numbers of electrons that can be associated with the following set of quantum numbers? n=3, l = 1 and m=-1
Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?
The figure shows the elliptical orbit of a planet $m$ about the sun $S$. The shaded area $SCD$ is twice the shaded area $SAB$. If $t_1$ is the time for the planet to move from $C$ to $D$ and $t_2$ is the time to move from $A$ to $B$, then:
The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively $4\%$ and $2\%$. The maximum error in the measurement of pressure is
Increase in temperature of a gas filled in a container would lead to :
The ions O²⁻, F⁻, Na⁺, Mg²⁺, and Al³⁺ are isoelectronic. Their ionic radii show:
A body of mass $m$ is taken from the Earth’s surface to the height equal to twice the radius ($R$) of the Earth. The change in potential energy of the body will be:
The earth is assumed to be a sphere of radius $R$. A platform is arranged at a height $R$ from the surface of the earth. The escape velocity of a body from this platform is $fv_e$, where $v_e$ is its escape velocity from the surface of the earth. The value of $f$ is:
Two quantities A and B have different dimensions. Which mathematical operation given below is physically meaningful?
A vernier calipers has 1 mm marks on the main scale. It has 20 equal divisions on the vernier scale which match with 16 main scale divisions. The least count of this vernier calipers is:
The number of orbitals indicated by the following set of quantum numbers, $n = 3, l = 2, m = +2$ is:
Average velocity of a particle executing SHM in one complete vibration is :