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Q What is photoelectric effect?
Photoelectric release is the phenomena by which a good number of substances chiefly metals emit electrons under the influence of radiation such as X-rays, γ rays, ultraviolet and even visible light.
Brackett series (Brackett) This is the series that describes the emission spectrum of hydrogen while the electron is jumping to the fourth orbital. All these lines are in the i
The molecular theory of magnetism was given by Weber and modified later by Ewing. According to that theory - Each molecule of a substance is a complete magnet in itself. Though,
A plane monochromatic wave travelling in a homogeneous medium goes into a denser medium. What are the changes in (i) Frequency (ii) amplitude (iii) speed of propagation & (iv) Phas
Suppose you blow the top of a bottle and hear a resonance sound (standing wave). The length of the bottle is about 25cm. If the speed of sound in air is about 340 cm/sec., what i
The Maximum displacement of a vibrating particle of medium from its mean position is known as amplitude.
Q. Give one merit of a scanning electron microscope over a transmission electron microscope? Answer:- The SEM has turn into more popular than the TEM as it can produce ima
A universal column of 6m carries a Point Load of (180+n2) kN centrally at its axis. The column also carries one end of a simply supported beam of 5m with a uniformly distributed lo
The effects of back emf on circuit current: In proving the time constant, it was stated that, at the instant the switch is closed, the current (I) is zero. This is because, at
a cat climbs 20 m directly up a tree. what is the horizontal component of the cat''s displacement
What do you mean by Normal shift? How can you calculate total internal reflection? Mention an application of total internal reflection.
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