List of top Physics Questions asked in Rajasthan PMT

For two resistance wires joined in parallel, the resultant resistance is $ \frac{6}{5}\Omega . $ When one of the resistance wires breaks the effective resistance becomes $ 2\,\Omega $ The resistance of the broken wire is

For high frequency, capacitor offers

An electron and proton enter a magnetic Held perpendicularly. Both have same kinetic energy. Which of the following is true?

A thermoelectric refrigerator works on

A solid sphere is rotating about a diameter at an angular velocity $ \omega . $ If it coots so that its radius reduces to $ \frac{1}{n} $ of its original value, its angular velocity becomes

A light emitting diode $(LED) $ has a voltage drop of $2 \,V$ across it and passes a current of $10 \,mA$. When it operates with a $6 \,V$ battery through a limiting resistor $R$. The value of $R$ is :

For inelastic collision between two spherical rigid bodies

A point initially at rest moves along $x$-axis. Its acceleration varies with time as $ a=(6t+5)\,m/s^{2}$ . If it starts from origin, the distance covered in $2\, s$ is

A point source emits sound equally in all directions in a non-absorbing medium. Two points $P$ and $Q$ are at distances of $2\, m$ and $3\, m$ respectively from the source. The ratio of the intensities of the waves at $P$ and $Q$ is

A solid sphere rolls down on two different inclined planes of same height, but of different inclinations. In both cases

If the temperature difference on the two sides of a wall increases from $ 100{}^\circ C $ to $ 200{}^\circ C $ , its thermal conductivity

Light waves travel in vacuum along the y-axis. Which of the following may represent the wave front?

Dimension of relative density is:

Amplitude of a pendulum is $60 \,mm$ and angular velocity is $2 \,rad\, s^{-1}$. Find its velocity if its displacement is $22 \,mm$:

Which of the following plots represents the variation of the electric field with distance from the centre of a uniformly charged non-conducting sphere of radius $R$ ?

The angular velocity of second hand, of a clock is :

The high boiling point of water is due to which reason:

The means of energy transfer in vacuum is:

If a ray of light is incident on an equilateral glass prism PQR placed on a horizontal table, then for the minimum deviation which of the following is true?

Distance between successive compression and rarefaction is $1 \,m$ and velocity of sound is $360 \,ms^{-1}$. Find frequency :

Acceleration due to gravity at earth's surface is $g \,ms ^{-2}$. Find the effective value of gravity at a height of $32\, km$ from sea level $:\left(R_{e}=6400 \,km \right)$

Near earths surface, time period of a satellite is $4 h$. Find its time period at height $4R$ from the centre of earth :

A body is moving in a circular path with acceleration $a$. If its velocity gets doubled, find the ratio of acceleration after and before the change :

If force $\vec{ F }= 5 \hat{ i }+3 \hat{ j }+4 \hat{ k }$ makes a displacement of $\vec{ s }=6 \hat{ i }-5 \hat{ k }$, work done by the force is :

A body of mass $0.1\, kg$ attains a velocity of $ 10\,ms^{-1}$ in $0.1 \,s.$ The force acting on the body is :