MCQ
$750$ waves of a energy radiation passes in one minute from a point then what will be wavelength of radiation
- A$4 \times {10^5}\,m$
- ✓$2.4 \times {10^7}\,m$
- C$4.16 \times {10^{ - 8}}\,m$
- D$2.4 \times {10^9}\,m$
✓
Answer
Correct option: B.
$2.4 \times {10^7}\,m$
b
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of the following fischer projection formula is same as $D$-Glyceraldehyde
→A $0.1\, M$ solution of $HF$ is $1\%$ ionized. What is the $K_a$
→Which of the following compounds would not be considered aromatic in its behaviour?
Which of the following is better nucleophile
Energy required to dissociate $ 4\,gm$ of gaseous hydrogen into free gaseous atoms is $208\, kcal $ at ${25\,^o}C$. The bond energy of $H - H$ bond will be
→Which of the following is the best thing to do during heavy lighting?
The suffix of the principal group, the prefixes for the other groups and the name of the parent in the structure
→$\begin{array}{*{20}{c}}
{HO - C{H_2} - CH - CH = C - C{H_2} - C - C - OH} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,||} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Cl\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,O\,}
\end{array}$
The final product formed when ethyl bromide is treated with excess of alcoholic $KOH$ is
→Total number of hydroxyl groups present in a molecule of the major product $P$ is. . . . . . . .
→In the following reaction sequence, the major product $P$ is formed. Glycerol reacts completely with excess $P$ in the presence of an acid catalyst to form $Q$. Reaction of $Q$ with excess $NaOH$ followed by the treatment with $CaCl _2$ yields $Ca$-soap $R$, quantitatively. Starting with one mole of $Q$, the amount of $R$ produced in gram is. . . . [Given, atomic weight: $H =1, C =12, N =14, O =16, Na =23, Cl =35, Ca =40$ ]
→