Physics-
General
Easy
Question
A concave mirror of radius R is kept on a horizontal table as shown. Water of refractive index 
is poured into it upto a height h. The height of the object O from water surface such that image is formed on it self is
The correct answer is:
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A ray of light travels in the fashion as shown in the figure. After passing through water, the ray grazes along the water air interface. The value of 
in terms of i is
A ray of light travels in the fashion as shown in the figure. After passing through water, the ray grazes along the water air interface. The value of in terms of i is
physics-General
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A concave mirror is placed over a beaker contacting water of 
and image of the object placed at the bottom of beaker is formed at a distance of 25 cm from the surface of water, then focal length of the mirror.
A concave mirror is placed over a beaker contacting water of and image of the object placed at the bottom of beaker is formed at a distance of 25 cm from the surface of water, then focal length of the mirror.
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The diagrams show lenses which either equiconvex or Plano convex. All curvatures are the same and the glasses of all the lenses are identical. What are the relative magnitudes of the resultant focal n length of the lenses arranged as shown?
P Q E
The diagrams show lenses which either equiconvex or Plano convex. All curvatures are the same and the glasses of all the lenses are identical. What are the relative magnitudes of the resultant focal n length of the lenses arranged as shown?
P Q E
physics-General
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A thin, symmetric double-convex lens of power P is cut into three parts A, B and C as shown. The power of
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physics-General
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An equilateral prism is kept as shown in the figure. A ray PQ is incident on one of the faces. For the minimum deviation of the incident ray,
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The current in 
resistance and the charge stored in the capacitor are
The current in resistance and the charge stored in the capacitor are
physics-General
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An inductor 
a resistor 
and a battery 
are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points A and B. The current in the circuit 1 ms after the short circuit is
An inductor a resistor and a battery are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points A and B. The current in the circuit 1 ms after the short circuit is
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A capacitor is charged through a resistor of resistance X. If the resistance is made 2X then the graph between log I and t is (the dotted line represents the initial graph)
A capacitor is charged through a resistor of resistance X. If the resistance is made 2X then the graph between log I and t is (the dotted line represents the initial graph)
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For the circuit shown in figure current in inductance is 0.8 A while in capacitance is 0.6 A. What is the current drawn from the source
For the circuit shown in figure current in inductance is 0.8 A while in capacitance is 0.6 A. What is the current drawn from the source
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The value of admittance in the adjoining circuit shown in figure is
The value of admittance in the adjoining circuit shown in figure is
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physics-
In the circuit shown in the figure, if value of 
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In the circuit shown in the figure, if value of then the current flowing through the condenser will be
physics-General
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In the circuit shown in figure, the initial value of current through the battery after closing the circuit (i.e., K pressed) is
In the circuit shown in figure, the initial value of current through the battery after closing the circuit (i.e., K pressed) is
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In the a.c. circuit shown in figure, the supply voltage has a constant r.m.s. value 
but variable frequency f. Resonance frequency is
In the a.c. circuit shown in figure, the supply voltage has a constant r.m.s. value but variable frequency f. Resonance frequency is
physics-General
chemistry-
Which among the following compounds behave both as an electrophile as well as a nucleophile-
a) 
b) 
c) 
d) 
Which among the following compounds behave both as an electrophile as well as a nucleophile-
a)
b)
c)
d)
chemistry-General
chemistry-
In each of the following pairs of species which species is an electrophile -
In each of the following pairs of species which species is an electrophile -
chemistry-General
