List of top Physics Questions asked in UPSEE

One milligram of matter converted into energy will give
On doping Ge metal with a little of In or Ga, we get
A stream of non viscous liquid emerges from a very short outlet tube at the base of a large open tank, in which the depth of liquid is h. The tube is at a fixed angle $\theta$ to the ground as shown. The maximum height of the stream y is
A non-conducting ring carries linear charge density $\lambda$. It is rotating with angular speed $\omega$ about its axis. The magnetic field at its centre is
The activity of a radioactive element decreases in 10 years to 1/5 of initial activity $A_0$ . After further next 10 years its activity will be
The rms speed of hydrogen molecule at a certain temperature is $v$. If the temperature is doubled and hydrogen gas dissociates into atomic hydrogen, the rms speed will become
Light has wavelength $600\, nm$ in free space. It passes into glass, which has an index of refraction of $1.50,$ What is the frequency of the light inside the glass ?
A train travels east towards Hubli at $80\, km/hr.$ A man on the train runs from the front of the train toward the rear of the train at $10\, km/hr$ with respect to train. As he runs, he carries a plate of fruit with him. He notices a giant spider on the plate and throws the plate away from him (toward the rear of the train) at $20\, km/hr$ with respect to him. Just after that instant, the startled spider jumps towards the man at $5\, km/hr$ with respect to plate. The instant after the spider jumps toward the man, how fast is the spider approaching Hubli?
Four very long wires are arranged as shown, so that their cross-section forms a square, with connections at the ends so that current I flows through all four wires as shown. Length of each side of the formed such square is b. The magnetic field at the central point P (centre of the square) is
The front solid cylinder has mass $\frac{M}{3} $ while the back one solid cylinder has mass $\frac{2M}{3}$. The centers of these cylinders are connected by massless rod as shown. Both the cylinders have same radii R. The system is released from rest on the inclined plane. The cylinders roll down. The speed of the rod after system descending a vertical distance h is
Which of the following has lowest wavelength -
Unit of Coefficient of thermal conductivity in MKS is
Two infinitely long wires carry linear charge densities $+ \lambda$ and $- \lambda$ respectively as shown. The potential difference between points A (at a distance a from the first wire) and B (at a distance b from the second wire) is
If the coefficient of static friction between shoes of a runner and the track is $0.85,$ the greatest acceleration that can be generated by the runner is (here g gravitational acceleration)
An object of mass $10\, kg$ falls from rest through a vertical distance of $10\,m$ and acquires a velocity of $10\,m/s$ .The work done by the push of air on the object is $(g = 10 \, m/s^2)$
An infinite number of capacitors $2.0 \, \mu F, 4.0 \, \mu F , 8.0 \, \mu F, 16.0 \, \mu F$, ............ are connected in series. The equivalent capacitance of the system is
An ellipse has uniform linear positive charge density in upper half (total upper half part charge +Q) and uniform linear negative charge density in lower half (total lower half part charge -Q) as shown in figure. Here semi minor axis b < a semi major axis. Select the correct statement about the magnitude of electric dipole moment P of the ellipse
Radii of two conducting circular loops are b and a respectively where b > > a. Centers of both loops coincide but planes of both loops are perpendicular to each other. The value of mutual inductance for these loops
A block of mass of 1 kg is moving on the x axis. A force F acting on the block is shown. Velocity of the block at time $t = 2\, s$ is - $3 \,m/s$ What is the speed of the block at time t = 4s ?
A string has a length of 5m between fixed points and has fundamental frequency of 20 Hz. What is the frequency of the second overtone ?
Two identical balls P and Q are projected with same speeds in vertical plane from same point O with making projection angles with horizontal $30^{\circ} $ and $60^{\circ} $ respectively and they fall directly on plane AB at points P' and Q' respectively. Which of the following statement is true about distances as given in options?
Two particles P and Q are moving on a circle. At a certain instant of time both the particles are diametrically opposite and P has tangential acceleration $8 \, m/s^2$ and centripetal acceleration $5 \, m/s^2$ whereas Q has only centripetal acceleration of $1 \, m/s^2$. At that instant acceleration (in $m/s^2)$ of P with respect to Q is :
For given L-R circuit, growth of current as function of time t is shown in graph. Which of the following option represents value of time constant most closely for the circuit?
A 10gm bullet moving directly upward at 1000 m/s strikes and passes through the center of mass of a 10 kg block initially at rest .The bullet emerges from the block moving directly upward at 400 m/s. What will be velocity of the block just after the bullet comes out of it ?
There are two identical springs each of spring constant k. Here springs, pulley and rods are massless and block has mass m. What is the extension of each spring at equilibrium ?