Pick out the statement which is not true - Vidyadip

MCQ

Pick out the statement which is not true

A
IR radiations are used for long distance photography
✓
IR radiations arise due to inner electron transitions in atoms
C
IR radiations are detected by using a bolometer
D
Sun is the natural source of $I R$ radiation

✓

Answer

Correct option: B.

IR radiations arise due to inner electron transitions in atoms

(b)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Transmission of Heat→Transmission of Heat — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

A convex mirror has a focal length $f$. A real object is placed at a distance $f$ in front of it from the pole produces an image at

A musical scale is constructed by providing intermediate frequencies between a note and its octave which

An open pipe of length $33 \mathrm{~cm}$ resonates with frequency of $100 \mathrm{~Hz}$. If the speed of sound is $330 \mathrm{~m} / \mathrm{s}$, then this frequency is

A liquid cools down from $70^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in $5$ minutes. The time taken to cool it from $60^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ will be

To convert a $800 \mathrm{mV}$ range milli voltmeter of resistance $40 \Omega$ into a galvanometer of $100 \mathrm{~mA}$ range, the resistance to be connected as shunt is

A short magnet oscillates with a time period $0.1 s$ at a place where horizontal magnetic field is $24 \mu T$. A downward current of $18 \mathrm{~A}$ is established in a vertical wire $20 \mathrm{~cm}$ east of the magnet. The new time period of oscillator

$X$-rays are produced in $X$-ray tube operating at a given accelerating voltage. The wavelength of the continuous $X$-rays has values from

An ideal gas has volume $V_0$ at $27^{\circ} \mathrm{C}$. It is heated at constant pressure so that its volume becomes $2 V_0$. The final temperature is

The brightness of a bulb will be reduced, if a resistance is connected in

The period of revolution of planet $A$ around the sun is 8 times that of $B$. The distance of $A$ from the sun is how many times greater than that of $B$ from the sun