Cengage NEET by C.P Singh
The focal length of the objective of a compound microscope is f0 and its distance from the eyepiece is L. The object is placed at a distance u from the objective. For proper working of the instrument.
15
Nov
The focal length of the objective of a compound microscope is f0 and its distance from the eyepiece is L. The object is placed at a distance u from the objective. For proper working of the instrument. The focal length of the objective of a compound microscope is f0 and its distance from the eyepiece [...]
The focal lengths of the objective and of the eye-piece of a compound microscope are f0 and fe respectively. If L is the tube length and D, the least distance of distinct vision, then its angular magnification, when the image is formed at infinity, is
15
Nov
The focal lengths of the objective and of the eye-piece of a compound microscope are f0 and fe respectively. If L is the tube length and D, the least distance of distinct vision, then its angular magnification, when the image is formed at infinity, is is The focal lengths of the objective and of the [...]
The magnifying power of a compound microscope is
15
Nov
The magnifying power of a compound microscope is The magnifying power of a compound microscope is November 15, 2020 Category: Cengage NEET by C.P Singh , Chapter 19 - Optical Instruments , Part 2 ,
A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be
15
Nov
A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be A simple magnifying lens is used in such a way that an image is formed at 25 cm [...]
The image of an object placed in front of a concave mirror of focal length 12 cm is formed at a point which is 10 cm more distant from the mirror than the object. The magnification of the image is:
05
Nov
The image of an object placed in front of a concave mirror of focal length 12 cm is formed at a point which is 10 cm more distant from the mirror than the object. The magnification of the image is: A concave mirror has focal length 15 cm. Where should an object be placed in [...]
The (x – t) graph of a particle undergoing simple harmonic motion is shown below. The acceleration of the particle at t=4/3 s is
05
Nov
The (x – t) graph of a particle undergoing simple harmonic motion is shown below. The acceleration of the particle at t=4/3 s is A particle executes SHM with a time period of 16s. At time t=2s its velocity is 4 ms^−1. The amplitude of motion in metre is? the particle crosses the mean position [...]
Time period of is simple pendulum of length L is T1 and the point time period of a uniform rod of the same length L pivotal about one end and oscillating in vertical plane is T2. Amplitude of oscillation in both the cased is small. The T1/T2 is:-duplicate-1
05
Nov
Time period of is simple pendulum of length L is T1 and the point time period of a uniform rod of the same length L pivotal about one end and oscillating in vertical plane is T2. Amplitude of oscillation in both the cased is small. The T1/T2 is:-duplicate-1 then the minimum time after which they [...]
The frequency of a radar is 780 MHz. After getting reflected from an approaching aeroplane, the apparent frequency is more than the actual frequency by 2.6 kHz. The aeroplane has a speed of
31
Oct
The frequency of a radar is 780 MHz. After getting reflected from an approaching aeroplane, the apparent frequency is more than the actual frequency by 2.6 kHz. The aeroplane has a speed of the apparent frequency is more than the actual frequency by 2.6 kHz. The aeroplane has a speed of The frequency of a [...]
The apparent wavelength of the light from a star, moving away from the earth is 0.01% more than its real wavelength. The speed of the star with respect to earth is
31
Oct
The apparent wavelength of the light from a star, moving away from the earth is 0.01% more than its real wavelength. The speed of the star with respect to earth is moving away from the earth is 0.01% more than its real wavelength. The speed of the star with respect to earth is The apparent [...]
A sound wave of frequency f travels horizontally to the right. It is reflected from a large vertical plane surface moving to left with a speed v. The speed of sound in medium is C, then
31
Oct
A sound wave of frequency f travels horizontally to the right. It is reflected from a large vertical plane surface moving to left with a speed v. The speed of sound in medium is C, then A sound wave of frequency f travels horizontally to the right. It is reflected from a large vertical plane [...]