Archives

When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V.

When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated... View Article

An engine takes in 5 moles of air at 20°C and 1atm, and compresses it adiabaticaly to 1/10th of the original volume.

An engine takes in 5 moles of air at 20°C and 1atm, and compresses it adiabaticaly to 1/10th of the original volume. Assuming air to be a... View Article

A small block starts slipping down from a point B on an inclined plane AB

A small block starts slipping down from a point B on an inclined plane AB, which is making an angle θ with the horizontal section BC is... View Article

A particle of mass m with an initial velocity

A particle of mass m with an initial velocity after collision, then v is given by: a) b) c) d) Answer: (d)... View Article

The least count of the main scale of a vernier callipers is 1 mm

The least count of the main scale of a vernier callipers is 1 mm. Its vernier scale is divided into 10 divisions and coincide with 9 divisions of... View Article

Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the ceiling.

Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the... View Article

Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively.

Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively. A person is... View Article

A charged particle (mass m and charge q) moves along X axis with velocity V₀.

A charged particle (mass m and charge q) moves along X axis with velocity V0. When it passes through the origin it enters a region having uniform... View Article

In a reactor, 2 kg of ₉₂U²³⁵ fuel is fully used up in 30 days. The energy released perfission is 200 MeV. Given that the Avogadro number, N = 6.023 × 10²⁶per kilo mole and1 eV =1.6 × 10^–19 J. The power output of the reactor is close to

a) 60 MW b) 54 MW c) 125 MW d) 35 MW No. of nucleus = NA x n = 6.022 x 1023 x (2000/235) = 51. 25 x 1023 = 102.5 × 1025 MeV = 102.5... View Article

A uniform cylinder of mass M and radius R is to be pulled over a step of height

A uniform cylinder of mass M and radius R is to be pulled over a step of height a(a < R) by applying a force F at its centre 'O' perpendicular... View Article

Two identical strings X and Z made of same material have tension T_x and T_z in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio T_x/T_z is:

a) 2.25 b) 1.25 c) 0.44 d) 1.5 given, μx = μz & Lx = Ly as identical F ∝ Therefore, Option (3) is the correct answer.... View Article

A beam of protons with speed 4 x 10⁵ ms^–1 enters a uniform magnetic field of 0.3 T at an angle of 60° to the magnetic field. The pitch of the resulting helical path of protons is close to: (Mass of the pr oton =1.67 × 10^–27 kg, charge of the proton =1.69 × 10^–19C)

a) 4 cm b) 2 cm c) 12 cm d) 5 cm Pitch = Vcos 600 x T = = 4cm Answer: (a)... View Article

Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity ρ_c, ρ_m, ρ_T and ρ_A respectively. Then:

a) ρc > ρA> ρT b) ρA> ρm > ρc c) ρA> ρT > ρc d) ρm > ρA> ρc (Theoretical concept) Answer: (d)... View Article

A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure.

A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of... View Article

M	T	W	T	F	S	S
			1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30	31

Archives

When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V.

An engine takes in 5 moles of air at 20°C and 1atm, and compresses it adiabaticaly to 1/10th of the original volume.

A small block starts slipping down from a point B on an inclined plane AB

A particle of mass m with an initial velocity

The least count of the main scale of a vernier callipers is 1 mm

Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the ceiling.

Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively.

A charged particle (mass m and charge q) moves along X axis with velocity V₀.

In a reactor, 2 kg of ₉₂U²³⁵ fuel is fully used up in 30 days. The energy released perfission is 200 MeV. Given that the Avogadro number, N = 6.023 × 10²⁶per kilo mole and1 eV =1.6 × 10^–19 J. The power output of the reactor is close to

A uniform cylinder of mass M and radius R is to be pulled over a step of height

Two identical strings X and Z made of same material have tension T_x and T_z in them. If their fundamental frequencies are 450 Hz and 300 Hz, respectively, then the ratio T_x/T_z is:

A beam of protons with speed 4 x 10⁵ ms^–1 enters a uniform magnetic field of 0.3 T at an angle of 60° to the magnetic field. The pitch of the resulting helical path of protons is close to: (Mass of the pr oton =1.67 × 10^–27 kg, charge of the proton =1.69 × 10^–19C)

Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity ρ_c, ρ_m, ρ_T and ρ_A respectively. Then:

A plane electromagnetic wave, has frequency of 2.0 × 10¹⁰ Hz and its energy density is 1.02 × 10^–8 J/m³ in vacuum.

A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T.

Interference fringes are observed on a screen by illuminating two thin slits 1 mm apart with a light source

Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T)

A bead of mass m stays at point P (a, b) on a wire bent in the shape of a parabola

If speed V, area A and force F are chosen as fundamental units

A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure.

FREE TEXTBOOK SOLUTIONS