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Two objects A and B when placed in front of a concave mirror of focal length 7.5cm, give images of equal size. If A is three times the size of B and is placed 30cm from the mirror, what is the distance of B from the mirror?
08
Nov
Two objects A and B when placed in front of a concave mirror of focal length 7.5cm, give images of equal size. If A is three times the size of B and is placed 30cm from the mirror, what is the distance of B from the mirror? give images of equal size. If A is [...]
Two mirrors at an angle θ produce 5 images of a point. The number of images produced when θ is decreased to θ−30 is
08
Nov
Two mirrors at an angle θ produce 5 images of a point. The number of images produced when θ is decreased to θ−30 is Two mirrors at an angle θ produce 5 images of a point. The number of images produced when θ is decreased to θ−30 is November 8, 2020 Category: Chapter 9 - [...]
Light of wavelength 5000 A^˙ falls on a plane reflecting surface. For what angle of incidence is the reflected ray normal to the incident ray?
08
Nov
Light of wavelength 5000 A^˙ falls on a plane reflecting surface. For what angle of incidence is the reflected ray normal to the incident ray? Light of wavelength 5000 A^˙ falls on a plane reflecting surface. For what angle of incidence is the reflected ray normal to the incident ray? November 8, 2020 Category: Chapter [...]
If the lower half of a concave mirror’s reflecting surface is made opaque, which of the following statements describe the image of an object placed in front of the mirrors ?
08
Nov
If the lower half of a concave mirror’s reflecting surface is made opaque, which of the following statements describe the image of an object placed in front of the mirrors ? If the lower half of a concave mirror's reflecting surface is made opaque which of the following statements describe the image of an object [...]
An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from the mirror. The type of mirror needed with the focal length is
08
Nov
An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from the mirror. The type of mirror needed with the focal length is An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from the [...]
The screening effect of d-electrons is (a) Equal to that of p-electrons (b) More than that of p-electrons (c) Same as f-electrons (d) Less than p-electrons
08
Nov
The screening effect of d-electrons is (a) Equal to that of p-electrons (b) More than that of p-electrons (c) Same as f-electrons (d) Less than p-electrons The screening effect of d-electrons is (a) Equal to that of p-electrons (b) More than that of p-electrons (c) Same as f-electrons (d) Less than p-electrons November 8, 2020 [...]
A concave mirror has a focal length of 5cm when an object is placed at a distance of 15 cm from the mirror, where is the image formed ?
08
Nov
A concave mirror has a focal length of 5cm when an object is placed at a distance of 15 cm from the mirror, where is the image formed ? A concave mirror has a focal length of 5cm when an object is placed at a distance of 15 cm from the mirror where is the [...]
Dobernier traids is (a) Na, K, Rb (b) Mg, S, As (c) Cl, Br, I (d) P, S, As
08
Nov
Dobernier traids is (a) Na, K, Rb (b) Mg, S, As (c) Cl, Br, I (d) P, S, As As As (c) Cl Br Dobernier traids is (a) Na I (d) P K Rb (b) Mg S November 8, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
From which of the following the hydration energy of Mg 2+ is larger (a) Na + (b) Al 3+ (c) Be 2+ (d) Cr 3+
08
Nov
From which of the following the hydration energy of Mg 2+ is larger (a) Na + (b) Al 3+ (c) Be 2+ (d) Cr 3+ From which of the following the hydration energy of Mg 2+ is larger (a) Na + (b) Al 3+ (c) Be 2+ (d) Cr 3+ November 8, 2020 Category: Uncategorised [...]
Who developed the long form of periodic table (a) Lothar Meyer (b) Niels Bohr (c) Mendeleev (d) Moseley
08
Nov
Who developed the long form of periodic table (a) Lothar Meyer (b) Niels Bohr (c) Mendeleev (d) Moseley Who developed the long form of periodic table (a) Lothar Meyer (b) Niels Bohr (c) Mendeleev (d) Moseley November 8, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,