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A ray of light is incident at the glass-water interface at an angle i. It emerges finally parallel to the surface of water. Then, the value of μg would be :
09
Nov
A ray of light is incident at the glass-water interface at an angle i. It emerges finally parallel to the surface of water. Then, the value of μg would be : A ray of light is incident at the glass-water interface at an angle i. It emerges finally parallel to the surface of water. Then [...]
An observer can see through a pin-hole the top end of a thin of height h, placed as shown in the figure. The beaker height is 3h and its radius h. When the beaker is filled with a liquid up to a height 2h, he can see the lower end of the rod. Then the refractive index of the liquid is
09
Nov
An observer can see through a pin-hole the top end of a thin of height h, placed as shown in the figure. The beaker height is 3h and its radius h. When the beaker is filled with a liquid up to a height 2h, he can see the lower end of the rod. Then the [...]
A point source of light B is placed at a distance L in front of the center of a mirror of width ‘d’ hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown in fig. The greatest distance over which he can see the image of the light source in the mirror is:
09
Nov
A point source of light B is placed at a distance L in front of the center of a mirror of width ‘d’ hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown in fig. The greatest [...]
Two plane mirrors A and B are aligned parallel to each other, as shown in fig. A light ray is incident at an angle of 30^o at a point just inside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflection (including the first one) before it emerges out is:
09
Nov
Two plane mirrors A and B are aligned parallel to each other, as shown in fig. A light ray is incident at an angle of 30^o at a point just inside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflection [...]
An object is placed at a distance of 10cm from a convex mirror of focal length 20 cm. The image distance is
09
Nov
An object is placed at a distance of 10cm from a convex mirror of focal length 20 cm. The image distance is An object is placed at a distance of 10cm from a convex mirror of focal length 20 cm. The image distance is November 9, 2020 Category: Chapter 9 - Ray Optics , MTG [...]
An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5)cm, the magnification of the image becomes 2. The focal length of the mirror is
09
Nov
An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5)cm, the magnification of the image becomes 2. The focal length of the mirror is An object placed in front of a [...]
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species
09
Nov
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
Assertion : Ionisation potential across the period is Na < Al < Mg < Si. Reason : Ionisation potential decreases with decrease in atomic size.
09
Nov
Assertion : Ionisation potential across the period is Na < Al < Mg < Si. Reason : Ionisation potential decreases with decrease in atomic size. Assertion : Ionisation potential across the period is Na < Al < Mg < Si. Reason : Ionisation potential decreases with decrease in atomic size. November 9, 2020 Category: Uncategorised [...]
Assertion : Ionisation enthalpy is always negative. Reason : Energy is always released when electrons are removed.
09
Nov
Assertion : Ionisation enthalpy is always negative. Reason : Energy is always released when electrons are removed. Assertion : Ionisation enthalpy is always negative. Reason : Energy is always released when electrons are removed. November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Assertion : First ionisation energy for nitrogen is lower than oxygen . Reason : Across a period effective nuclear charge decreases.
09
Nov
Assertion : First ionisation energy for nitrogen is lower than oxygen . Reason : Across a period effective nuclear charge decreases. Assertion : First ionisation energy for nitrogen is lower than oxygen . Reason : Across a period effective nuclear charge decreases. November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]