Assertion : Radioactive nuclei emit 
particles.
Reason : Electrons exist inside the nucleus.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
(c) If assertion is true but reason is false.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The photoelectric effect can be understood on the basis of
|
(a) The principle of superposition |
(b) The electromagnetic theory of light |
|
(c) The special theory of relativity |
(d) Line spectrum of the atom |
To obtain electrons as majority charge carriers in a semiconductor, the impurity mixed is
|
(a) Monovalent |
(b) Divalent |
(c) Trivalent |
(d) Pentavalent |
The reading of the ammeter as per figure shown is
|
(a) |
(b) |
(c) |
(d) 2 A |
Assertion : Mass of moving photon varies inversely as the wavelength.
Reason : Energy of the particle = Mass × 
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
For a thermocouple the neutral temperature is 270℃ when its cold junction is at 20℃. What will be the neutral temperature and the temperature of inversion when the temperature of cold junction is increased to 40 ℃
|
(a) 290℃, 580℃ |
(b) 270℃, 580℃ |
(c) 270℃, 500 ℃ |
(d) 290 ℃, 540 ℃ |
