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PHYSICS 2025
Max. Marks: 60 Time: 3 Hour
SECTION "A" MULTIPLE CHOICE QUESTIONS (MCQs)
Marks: 12
NOTE: (i) Attempt all the Questions of this Section. (ii) Do not copy down the part questions. Write only the answer against the proper number of the Question and its part according to the question Paper. (iii) Each question carries 1 Marks
1. Choose the correct Answer for each from the given options:
i. The oscillatory motion is damped due to the presence of *Linear Motion *Restoring force *Frictional force ✓ *Mechanical force
ii. The two factors affecting the speed of sound in air are: *Air's humidity and volume *Air's temperature and mass *Air's volume and mass *Air's temperature and the humidity ✓
iii. The type of electromagnetic wave used in security scanners at night is: *Infrared✓ *Microwave *Radio wave *X-Rays
iv. The power of the lens of focal length 1 cm will be: *0.01 *1 D *10 D *100 D✓
v. If two capacitors each of 4μF capacitance connected in series their equivalent capacitance will be: * 14 μF • * 12 μF *2μF✓ *4μF
vi. A wire has a resistance of 5Ω and 2A current passes through it then the voltage across the wire ends will be: *10 V *20 V *30 V *40 V
vii. A device which converts mechanical energy into electrical energy is called: *Motor *Transformer *AC Generator ✓ *Battery
viii. An example of digital electronic device is: *Speedometer *Barometer *Laptop✓ *Ordinary air thermometer
ix. This is not a component of CHIS: *Data *Furniture✓ *People *Software
x. The number of neutron(s) in Deuterium is/are: *0 *1✓ *2 *3
xi. The nuclear radiation which has the highest penetrating ability is: *Alpha *Beta *Gamma✓ *X-ray
xii. These cannot carry electric charge: *Electromagnetic waves✓ *Transverse warm *longitudinal waves *Water waves
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