The near point and far point of a person are 40 cm and 250 cm, respectively. Determine the power of the lens he/she should use while reading a book kept at distance 25 cm from […]
If the magnetising field on a ferromagnetic material is increased, its permeability
Options
(a) decrease (b) increase (c) is unaffected (d) may be increase or decrease
Correct Answer:
decrease
Explanation:
Magnetic permeability of substance, […]
The checkpoint in cell cycle plays important role in
Options
(a) repairing DNA damage (b) apoptosis initiation (c) assessing DNA damage (d) inhibiting cell damage
Correct Answer:
assessing DNA damage
Explanation:
No explanation […]
Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is
Options
(a) calcium oxide (b) distilled water (c) potassium hydroxide solution (d) […]
An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform electric field in time t₁. A proton of mass Mp also initially at rest, takes time t₂ to move […]
The Boolean expression P+ P ̅ Q, where P and Q are the inputs of the logic circuit, represents
Options
(a) AND gate (b) NAND gate (c) NOT gate (d) OR gate
Correct […]
The phase difference between the flux linked with a coil rotating in a uniform magnetic field and induced emf produced in it is
Options
(a) π/2 (b) π/3 (c) (-π/6) (d) π
Correct Answer: […]
The self-inductance of a coil having 500 turns is 50mH. The magnetic flux through the cross-sectional area of the coil while current through it is 8 mA is found to be
Options
(a) […]
Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂, respectively. The ratio, R₁/R₂ is equal to
Options
(a) (3:2) (b) (1:3) (c) (1:2) (d) (2:3)
Correct Answer:
(3:2)
A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH, while its effective resistance is 20Ω. Determine the resonant frequency.
Options
(a) 9×10⁴ Hz (b) 16×10⁷ […]
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