List of practice Questions

For a photocell, the work function is \( \phi \) and the stopping potential is \( V_s \). The wavelength of the incident radiation can be expressed as

The gate represented in the given figure is

The energy stored per unit volume is \( 0.3 \, \text{J/m}^3 \) when a wire is stretched by \( 0.125 \, \text{cm} \). When it is stretched by \( 0.75 \, \text{cm} \), the increase in potential energy per unit volume stored in the wire is

The magnifying power of a simple microscope is inversely proportional to its focal length \( f \) and it is maximum when image is formed at \( D = \) Distance of distinct vision (DDV).

A vector \( \vec{F}_1 \) is a unit vector along the positive direction of x-axis and \( \vec{F}_2 \) is of magnitude 4. If the vector product of \( \vec{F}_1 \) and \( \vec{F}_2 \) is zero, then \( \vec{F}_2 \) is

Let \( R_1 \) and \( R_2 \) be radii of two mercury drops. A big mercury drop is formed from them under isothermal conditions. The radius of the resultant drop is

Two vectors \( \vec{P} \) and \( \vec{Q} \) have equal magnitudes. If \( | \vec{P} + \vec{Q} | = 5 \) and \( | \vec{P} - \vec{Q} | = 4 \), then the angle between \( \vec{P} \) and \( \vec{Q} \) is

A thin wire of length \( L \) and uniform linear mass density \( m \) is bent into a circular loop. The moment of inertia of this loop about the tangential axis and in the plane of the coil is

If \( v_n \) and \( v_p \) are orbital velocities in \( n^{th} \) and \( p^{th} \) orbit respectively, then the ratio \( \frac{v_p}{v_n} \) is

In parallel plate capacitor, electric field between the plates is \( E \). If the charge on the plates is \( Q \), then the force on each plate is

Average kinetic energy of \( H_2 \) molecule at 300K is \( E \). At the same temperature, average kinetic energy of \( O_2 \) molecule will be

A wire having a diameter of 3 mm is stretched by an external force to produce a longitudinal strain of \( 3 \times 10^{-3} \). If the Poisson’s ratio of the wire is 0.4, the change in its diameter is

The product of magnetic susceptibility \( \chi \) and absolute temperature \( T \) is constant for a

When a surface 1 cm thick is illuminated by light of wavelength \( \lambda \), the stopping potential is \( V_0 \). When the same surface is illuminated by light of wavelength \( 3\lambda \), the stopping potential is \( \frac{V_0}{6} \). The threshold wavelength for the metallic surface is

Light rays are incident from air on a block of glass (Refractive Index = 1.5). The reflected and refracted rays are perpendicular to each other. The ratio of the wavelengths of the refracted and reflected light is

A sonometer wire of length \( L \) between the two bridges vibrates in 3rd harmonic. Antinodes are formed at

A ball at rest falls vertically on ground from a height of 5m. The coefficient of restitution is 0.4. The maximum height of the ball after the first rebound is

The period of revolution of a communication satellite is 24 hours. The period of a satellite in an orbit at a distance three times that of the earth’s radius above its surface will be

A black body has maximum wavelength \(\lambda_m\) at temperature \(2200\,\text{K}\). Its corresponding wavelength at temperature \(3300\,\text{K}\) will be

Product of the following reaction:

The Crystal form of Sulphacetamide is

Dimethyl sulfoxide acts as penetration enhancer for topical formulations by:

Cotrimoxazole is combination of trimethoprim with sulfamethoxazole. Which of the following statement is correct about cotrimoxazole ?

Identify the diuretic which causes hyperuricaemia, tend to raise serum calcium and also causes magnesium depletion?

In which year India signed General Agreement on Trade and Tariffs (GATT) including Trade Related Intellectual Property Rights (TRIPS)?