The refractive index of material of a prism and liquid are 1.56 and 1.32, respectively. What will be the value of θ for the following refraction?
A charge Q is placed at the mouth of a conical flask. The flux of the electric field through the flask is
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A thin plano-convex lens, acts like a concave mirror of focal length 0.2 m, when silvered from its plane surface. The refractive index of the material of the lens is 1.5. The radius of curvature, of the convex surface, of the lens will be
Inside a uniform sphere of mass M (M is mass of completer sphere) and radius R, a cavity of radius R/3 is made in the sphere as shown.
Which of the following statements is true?
A right-angled prism is to be made by selecting a proper material and angles A and B (B ≤ A), as shown in the figure. It is desired that a ray of light incident on face AB emerges parallel to the incident direction after two internal reflections. What should be the minimum refractive index (n) for this to be possible?
A body of mass 6 kg is acted upon by a force which causes a displacement in it by x = metres, where t is time in seconds. The work done by the force in 2 seconds is
If a photon of wavelength 150 pm strikes an atom and one of its inner bound electrons is ejected with a velocity of 1.5 × 107 ms-1, then what is the energy with which it is bound to the nucleus?
Which of the following oxides is expected to exhibit paramagnetic behaviour?
The rate of the reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is
Which among the following molecules have the same number of lone pairs on Xe?
(i)
(ii)
(iii)
One mole of magnesium in the vapour state absorbs 1200 kJ mol-1 energy. If the first and second ionisation energies of Mg are 750 kJ mol-1 and 1450 kJ mol-1, respectively, then the final composition of the mixture is
An electrochemical cell is represented as follows.
Pt (H2, 1 atm) | 0.1 M HCl || 0.1 M acetic acid | (H2, 1 atm) Pt
The emf of this cell will not be zero because the
Directions: In this question, a figure (X) is given followed by four alternative figures (a), (b), (c) and (d) such that figure (X) is embedded in one of them. Choose the alternative figure in which figure (X) is embedded.
Directions: In the question given below, there are four question figures marked (A), (B), (C) and (D), followed by four other answer figures marked (1), (2), (3) and (4). Select a figure from amongst the answer figures which will continue the same series as established by the four question figures.
Directions: Select one figure from the 'Answer Figures' which will continue the same series as given in the 'Problem Figures'.
Directions: Select one figure from the 'Answer Figures' which will continue the same series as given in the 'Problem Figures'.
Directions: The second figure of the Problem figures bears a certain relationship to the first figure. Similarly, one of the figures in Answer Figures bears the same relationship to the third figure. You have to select the figure from the set of Answer figures which would replace the sign of question mark (?).
Directions: In the following problem, four figures are given. Three of them are similar in some way, but one figure is dissimilar. Find out which figure does not belong to the group.
Directions: In the following problem, four figures are given. Three of them are similar in some way, but one figure is dissimilar. Find out which figure does not belong to the group.
Directions: In the following question, there is some relationship between the two terms on the left of (: :) and the same relationship exists between the two terms on its right. Find the missing term.
6 : 222 : : 7 : ?
Universal set U = (x : x5 - 6x4 + 11x3 - 6x2 = 0)
A = (x : x2 - 5x + 6 = 0)
B = (x : x2 - 3x + 2 = 0)
(A ∩ B)' is equal to
2 videos|17 docs|85 tests
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2 videos|17 docs|85 tests
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