Physics-
General
Easy
Question
An equilateral prism is kept on a horizontal surface. A typical ray of light PQRS is shown in the figure. For minimum deviation
- the ray PQ must be horizontal
- the ray RS must be horizontal
- the ray QR must be horizontal
- any one of them can be horizontal
The correct answer is: the ray QR must be horizontal
During minimum deviation the ray inside the prism is parallel to the base of the prism in case of an equilateral prism. Hence, the correct option is
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physics-
Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is 
, a rav, incident at an angle 
, on the face AB would get transmitted through the face AC of the prism provided :
Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is , a rav, incident at an angle , on the face AB would get transmitted through the face AC of the prism provided :
physics-General
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A transparent solid cylindrical rod has a refractive index of 
It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle (q) for which the light ray grazes along the wall of the rod is:
A transparent solid cylindrical rod has a refractive index of It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure. The incident angle (q) for which the light ray grazes along the wall of the rod is:
physics-General
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A light ray is incident perpendicularly to one face to a 
prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45º, we conclude that the refractive index n is
A light ray is incident perpendicularly to one face to a prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45º, we conclude that the refractive index n is
physics-General
chemistry-
The complex ion has two optical isomers. Their correct configurations are:
The complex ion has two optical isomers. Their correct configurations are:
chemistry-General
chemistry-
Of the following configurations, the optical isomers are
I) 
II) 
III) 
IV) 
Of the following configurations, the optical isomers are
I)
II)
III)
IV)
chemistry-General
chemistry-
The complexes given below show:
and 
The complexes given below show:
and
chemistry-General
physics-
Statement–I : Two identical conical pipes shown in figure have a drop of water. The water drop tends to move towards tapered end
Statement–II Excess pressure is directed towards centre of curvature and inversely proportional to radius of curvature. Net excess pressure is therefore, directed towards tapered end. So the water drop tends to move towards tapered end
Statement–I : Two identical conical pipes shown in figure have a drop of water. The water drop tends to move towards tapered end
Statement–II Excess pressure is directed towards centre of curvature and inversely proportional to radius of curvature. Net excess pressure is therefore, directed towards tapered end. So the water drop tends to move towards tapered end
physics-General
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A liquid flows through a horizontal tube. The velocities of the liquid in the two sections, which have areas of cross– section 
and 
, are 
and 
respectively. The difference in the levels of the liquid in the two vertical tubes is h–
A liquid flows through a horizontal tube. The velocities of the liquid in the two sections, which have areas of cross– section and , are and respectively. The difference in the levels of the liquid in the two vertical tubes is h–
physics-General
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A massless conical flask filled with a liquid is kept on a table in a vacuum. The force exerted by the liquid on the base of the flask is 
. The force exerted by the flask on the table is 
A massless conical flask filled with a liquid is kept on a table in a vacuum. The force exerted by the liquid on the base of the flask is . The force exerted by the flask on the table is
physics-General
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The vessel shown in the figure has two sections of areas of cross–section and . A liquid of density 
fills both the sections, up to a height h in each. Neglect atmospheric pressure:-
The vessel shown in the figure has two sections of areas of cross–section and . A liquid of density fills both the sections, up to a height h in each. Neglect atmospheric pressure:-
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The wires A and B shown in the figure are made of the same material, and have radii 
and 
respectively. The block between them has a mass m. When the force F is mg/3, one of the wires breaks–
The wires A and B shown in the figure are made of the same material, and have radii and respectively. The block between them has a mass m. When the force F is mg/3, one of the wires breaks–
physics-General
physics-
A spherical ball is dropped in a long column of viscous liquid. Which of the following graphs represent the variation of :
i) Gravitational force with time
ii) Viscous force with time
iii) Net force acting on the ball with time
A spherical ball is dropped in a long column of viscous liquid. Which of the following graphs represent the variation of :
i) Gravitational force with time
ii) Viscous force with time
iii) Net force acting on the ball with time
physics-General
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A cubical block of side 'a' and density '' slides over a fixed inclined plane with constant velocity 'v'. There is a thin film of viscous fluid of thickness 't' between the plane and the block. Then the coefficient of viscosity of the thin film will be:
A cubical block of side 'a' and density '' slides over a fixed inclined plane with constant velocity 'v'. There is a thin film of viscous fluid of thickness 't' between the plane and the block. Then the coefficient of viscosity of the thin film will be:
physics-General
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A space 2.5 cm wide between two large plane surfaces is filled with oil. Force required to drag a very thin plate of area 0.5 
just midway the surfaces at a speed of 0.5 m/s is 1N. The coefficient of viscosity in kg–sec/ is:
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physics-General
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An open pan P filled with water (density 
) is placed on a vertical rod, maintaining equilibrium. A block of density is placed on one side of the pan as shown. Water depth is more than height of the block.
An open pan P filled with water (density ) is placed on a vertical rod, maintaining equilibrium. A block of density is placed on one side of the pan as shown. Water depth is more than height of the block.
physics-General
