In which one of the following expenditure of energy is required?
Options
(a) Osmosis (b) Diffusion (c) Active transport (d) Passive transport
Correct Answer:
Active transport
Explanation:
No explanation available. Be the first […]
An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic moment due to this rotation of electron is (in A-m²)
Options
(a) 2.16×10⁻²³ (b) 3.21×10⁻²² (c) 3.21×10⁻²⁴ (d) […]
A proton of mass m and charge q is moving in a plane with kinetic energy E. If there exists a uniform magnetic field B, perpendicular to the plane motion, the proton will move in […]
The intensity of magnetisation of a bar magnet is 5×10⁴ Am⁻¹. The magnetic length and the area if cross- section of the magnet are 12 cm and 1 cm⁻² respectively. The magnitude of magnetic moment […]
The intermediate image formed by the objective of a compound microscope is
Options
(a) real, inverted and magnified (b) real, erect and magnified (c) virtual, erect and magnified (d) virtual, inverted and magnified
Correct […]
A luminous object is seperated from a screen by distance d. A convex lens is placed between the object and the screen such that it forms a distinct image on the screen. The maximum possible […]
For the radioactive nuclei that undergo either α or β decay, which one of the following cannot occur?
Options
(a) Isobar of original nucleus is produced (b) Isotope of the original nucleus is […]
Chlorophyll molecules are located in the
Options
(a) thylakoid membrane (b) thylakoid lumen (c) stroma (d) inner chloroplast membrane
Correct Answer:
thylakoid membrane
Explanation:
No explanation available. Be the first to write the […]
Three capacitors 3μF, 6μF and 6μF are connected in series to a source of 120V. The potential difference in volt, across the 3μF capacitor will be
Options
(a) 24V (b) 30V (c) 40V […]
Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer shell has a charge q and the inner one is grounded, then the charge on the inner shell is
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