Physics-
General
Easy
Question
The slab of a material of refractive index 2 shown in figure has a curved surface APB of radius of curvature 10 cm and a plane surface CD. On the left of APB is air on the right of CD is water with refractive indices as given in the figure. An object O is placed at a distance of 15 cm the pole P as shown. The distance of the final image of O from P, as viewed normally from the left is
- 30 cm
- 40 cm
- 45 cm
- 50 cm
The correct answer is: 30 cm
Related Questions to study
physics-
An equiconvex lens is cut into two halves along (i) 
and (ii) 
as shown in the figure. Let 
be the focal lengths of completes lens, of each half in case (i), and of each half in case (ii), respectively. Choose the correct statement from the following.
An equiconvex lens is cut into two halves along (i) and (ii) as shown in the figure. Let be the focal lengths of completes lens, of each half in case (i), and of each half in case (ii), respectively. Choose the correct statement from the following.
physics-General
physics-
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
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
physics-General
physics-
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
physics-
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.
physics-General
physics-
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
physics-
A thin, symmetric double-convex lens of power P is cut into three parts A, B and C as shown. The power of
A thin, symmetric double-convex lens of power P is cut into three parts A, B and C as shown. The power of
physics-General
physics-
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,
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,
physics-General
physics-
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
physics-
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
physics-General
physics-
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)
physics-General
physics-
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
physics-General
physics-
The value of admittance in the adjoining circuit shown in figure is
The value of admittance in the adjoining circuit shown in figure is
physics-General
physics-
In the circuit shown in the figure, if value of 
then the current flowing through the condenser will be
In the circuit shown in the figure, if value of then the current flowing through the condenser will be
physics-General
physics-
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
physics-General
physics-
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
