Assertion : A red object appears dark in the yellow light
Reason : A red colour is scattered less
|
(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. |
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion : If three identical bulbs are connected in series as shown in figure then on closing the switches. Bulb C short circuited and hence illumination of bulbs A and B decreases.
Reason : Voltage on A and B decreases
|
(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. |
In Millikan oil drop experiment, a charged drop of mass 1.8 
is stationary between its plates. The distance between its plates is 0.90 cm and potential difference is 2.0 kilo volts. The number of electrons on the drop is
|
(a) 500 |
(b) 50 |
(c) 5 |
(d) 0 |
Taking Rydberg’s constant 
first and second wavelength of Balmer series in hydrogen spectrum is
| (a) 2000 Å, 3000 Å | (b) 1575 Å, 2960 Å | (c) 6529 Å, 4280 Å | (d) 6552 Å, 4863 Å |