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Physics 1 Marks Question

Electromagnetic Waves · Rajasthan Board (RBSE) STD 12 Science (Rajasthan - English Medium). 53 questions.

Questions · Page 2 of 2

1 Marks Question

Question 511 Mark
Identify the type of waves which are produced by the following way and write one application for each:
  1. Radioactive decay of the nucleus.
  2. Rapid acceleration and decelerations of electrons in aerials.
  3. Bombarding a metal target by high energy electrons.
Answer
S. No Type of wave Application
(i) Gamma rays Treatment of tumors.
(ii) Radio waves Radio and television communication systems.
(iii) X-rays Study of crystals.
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Question 521 Mark
Experimental observations have shown that $X-$rays$:$
  1. Travel in vacuum with a speed of $3 \times 10^8\ ms^{-1}.$
  2. Exhibit the phenomenon of diffraction and can be polarised.
What conclusion can be drawn about the nature of $X-$rays from each of these observations?
Answer
  1. $X-$rays are electromagnetic waves.
  2. $X-$rays are transverse in nature.
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Question 531 Mark
Define displacement current.
Answer
Displacement current is the current which comes into existence in a region where the electric field (and electric flux) is changing with time. It is given by $I_d=\in_0 \frac{d \Phi_E}{d t}$.
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1 Marks Question - Page 2 - Physics STD 12 Science Questions - Vidyadip