Light propagates rectilinearly because of its
Options
(a) Frequency (b) Wavelength (c) Velocity (d) Wave nature
Correct Answer:
Wavelength
Explanation:
Wavelength of light is very small. It is of the order of 6000 Å […]
An electron having charge e and mass m is moving in a uniform electric field E. Its acceleration will be
Options
(a) e²/m (b) E²e/m (c) eE/m (d) mE/e
Correct Answer:
eE/m
Explanation: […]
What is the difference between soft and hard X-ray?
Options
(a) Velocity (b) Intensity (c) Polarization (d) Frequency
Correct Answer:
Frequency
Explanation:
No explanation available. Be the first to write the explanation for […]
The speed of an electron having a wavelength of 10⁻¹⁰ m is
Options
(a) 6.26×10⁶ m/s (b) 5.25 x10⁶ m/s (c) 7.25×10⁶ m/s (d) 4.24×10⁶ m/s
Correct Answer:
7.25×10⁶ m/s
Explanation:
λ = h […]
In a semiconductor
Options
(a) There are no free electrons at any temperature (b) The number of free electrons is more than that in a conductor (c) There are no free electrons at […]
If P is pressure and D is density of a gas, then P and D are related as
Options
(a) P ∝ D (b) P ∝ (1/D) (c) P ∝ D² (d) P […]
Action of acetylene on dilute H₂SO₄ gives
Options
(a) acetic acid (b) acetaldehyde (c) acetone (d) acetoacetic ester
Correct Answer:
acetaldehyde
Explanation:
No explanation available. Be the first to write the explanation for […]
Enzymes with two sites are called
Options
(a) apoenzyme (b) allosteric enzyme (c) holoenzyme (d) conjugate enzyme
Correct Answer:
allosteric enzyme
Explanation:
No explanation available. Be the first to write the explanation for […]
Which of the following structures helps in the respiration of lichens?
Options
(a) soredia (b) isidia (c) cyphella (d) cephalodia
Correct Answer:
cyphella
Explanation:
No explanation available. Be the first to write the […]
Introduction of foreign genes for improving genotype is
Options
(a) biotechnology (b) vernalization (c) tissue culture (d) genetic engineering
Correct Answer:
genetic engineering
Explanation:
No explanation available. Be the first to write the […]
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