Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
The mean lives of a radioactive substance are 1620 years and 405 years for alpha emission and beta emission, respectively. Find out the time during which three-fourth of a sample will
12
Sep
The mean lives of a radioactive substance are 1620 years and 405 years for alpha emission and beta emission, respectively. Find out the time during which three-fourth of a sample will respectively. Find out the time during which three-fourth of a sample will The mean lives of a radioactive substance are 1620 years and 405 [...]
Nuclei of radioactive element A are being produced at a constant rate alpha. The element has a decay constant lemda. At time t = 0, there are N0 nuclei of the element. (a) Calculate the number N of nuclei of A
12
Sep
Nuclei of radioactive element A are being produced at a constant rate alpha. The element has a decay constant lemda. At time t = 0, there are N0 nuclei of the element. (a) Calculate the number N of nuclei of A Nuclei of radioactive element A are being produced at a constant rate alpha. The [...]
If the focal length of the objective lens and the eye lens are 4 mm and 25 mm respectively in a compound microscop[e. The length of the tube is 16 cm. Find its magnifying power for relaxed eye position
12
Sep
If the focal length of the objective lens and the eye lens are 4 mm and 25 mm respectively in a compound microscop[e. The length of the tube is 16 cm. Find its magnifying power for relaxed eye position A simple telescope The light ray is incidence at angle of 60∘ on a prism of [...]
A factory produces a radio substance A at a constant rate R which decays with a decay constant lemda to form a stable substance. Find (a) the number of nuclei of A and (b) number of nuclei of B, at any time t assuming
12
Sep
A factory produces a radio substance A at a constant rate R which decays with a decay constant lemda to form a stable substance. Find (a) the number of nuclei of A and (b) number of nuclei of B, at any time t assuming A factory produces a radio substance A at a constant rate [...]
A radioactive nucleus can decay by two different processes. The half-life for the first process is t1 and that for the second process is t2. Show that the effective half-life t of the nucleus is given by
12
Sep
A radioactive nucleus can decay by two different processes. The half-life for the first process is t1 and that for the second process is t2. Show that the effective half-life t of the nucleus is given by The normal activity of living carbon-containing matter is found to be about 15 decays per minute for every [...]
A telescope has an objective lens 10 cm diameter and is situated at a distance of one km from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wave length of light is 5000 A, is of the order of
12
Sep
A telescope has an objective lens 10 cm diameter and is situated at a distance of one km from two objects. The minimum distance between these two objects, which can be resolved by the telescope, when the mean wave length of light is 5000 A, is of the order of A telescope has an objective [...]
Suppose the daughter nucleus in a nuclear decay is itself radioactive. Let lemda p and lemda d be the decay constants of the parent and the daughter nuclei. Also, let Np and Nd be the number of parent and daughter nuclei at time t. Find the condition for which the number of daughter
12
Sep
Suppose the daughter nucleus in a nuclear decay is itself radioactive. Let lemda p and lemda d be the decay constants of the parent and the daughter nuclei. Also, let Np and Nd be the number of parent and daughter nuclei at time t. Find the condition for which the number of daughter let Np [...]
The focal length of an objective of a telescope is 3 metre and diameter 15 cm . Assuming for a normal eye, the diameter of the pupil is 3 mm for its complete use, the focal length of eye piece must be
12
Sep
The focal length of an objective of a telescope is 3 metre and diameter 15 cm . Assuming for a normal eye, the diameter of the pupil is 3 mm for its complete use, the focal length of eye piece must be the diameter of the pupil is 3 mm for its complete use The [...]
The diameter of the moon is 3.5 × 10^3 km and its distance from the earth is 3.8 × 10^5 km. It is seen by a telescope having the focal length of the objective and the eye-piece as 4 m and 10 cm respectively. The diameter of the image of the moon will be approximately
12
Sep
The diameter of the moon is 3.5 × 10^3 km and its distance from the earth is 3.8 × 10^5 km. It is seen by a telescope having the focal length of the objective and the eye-piece as 4 m and 10 cm respectively. The diameter of the image of the moon will be approximately [...]
A telescope using light having wavelength 5000 Å and using lenses of focal 2.5 and 30 cm . If the diameter of the aperture of the objective is 10 cm , then the resolving limit and magnifying power of the telescope is respectively
12
Sep
A telescope using light having wavelength 5000 Å and using lenses of focal 2.5 and 30 cm . If the diameter of the aperture of the objective is 10 cm , then the resolving limit and magnifying power of the telescope is respectively A telescope using light having wavelength 5000 Å and using lenses of [...]