nikhil04
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Joined: Aug 19, 2020
Last seen: Jan 13, 2022
Last seen: Jan 13, 2022
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Answer to: Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
Correct answer: (4) 3.66 × 10–7 rad
5 years ago
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Answer to: A 40 μF capacitor is connected to a 200 V, 50 Hz ac supply. The rms value of the current in the circuit is, nearly :
Correct answer: (2) 2.5 A
5 years ago
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Answer to: Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material.
Correct answer: (3) zero
5 years ago
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Answer to: A body weighs 72 N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?
Correct answer: (1) 32 N
5 years ago
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Answer to: An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is 1.227 × 10^-2 nm
Correct answer: (3) 104 V
5 years ago
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Answer to: Light with an average flux of 20 W/cm^2 falls on a non-reflecting surface at normal incidence having surface area 20 cm^2.
Correct answer: (2) 24 × 103 J
5 years ago
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Answer to: For which one of the following, Bohr model is not valid?
Correct answer: (3) 300 m
5 years ago
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Answer to: In a certain region of space with volume 0.2 m3, the electric potential is found to be 5 V throughout.
Correct answer: (4) zero
5 years ago
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Answer to: A wire of length L, area of cross-section A is hanging from a fixed support.
Correct answer: (3) MgL/A(L1- L)
5 years ago
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Answer to: A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A.
Correct answer: (4) 6.28 × 10–4T
5 years ago
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Answer to: A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A.
Correct answer: (3) Singly ionised neon atom (Ne+)
5 years ago
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Answer to: A wire of length L, area of cross-section A is hanging from a fixed support.
Correct answer: (3) MgL/A(L1- L)
5 years ago
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Answer to: A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is π/3.
Correct answer: (2) 1.0
5 years ago
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Answer to: Match the following and identify the correct option. (a) CO(g) + H2(g) - (i) Mg(HCO3)2 + Ca(HCO3)2
Correct answer: (4) (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
5 years ago
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Answer to: Paper chromatography is an example of
Correct answer: (1) Partition chromatography
5 years ago
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Answer to: Measuring Zeta potential is useful in determining which property of colloidal solution?
Correct answer: (2) Stability of the colloidal particles
5 years ago
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Answer to: What is the change in oxidation number of carbon in the following reaction?
Correct option: (2) – 4 to + 4
5 years ago
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Answer to: On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be
Correct option: (1) Oxygen gas
5 years ago
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Answer to: Which of the following amine will give the carbylamine test?
Correct answer: (4)
5 years ago
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