Question
Which of the following phenomena cannot be explained by
the wave theory of light?Solution
The photoelectric effect cannot be explained by the wave theory of light. The wave theory fails to account for the observation that light, below a certain frequency, does not eject electrons from a metal surface, regardless of its intensity. The phenomenon is explained by Einstein using the particle nature of light, which is described by the quantum theory.
Select the option that represents the letters that, when placed from left to right in the following blanks, will complete the letter-series.
G _ ...
The position of how many letters will remain unchanged if each of the letters in the word ‘ABDUCTS’ is arranged in English alphabetical order?
28 is related to 168 following a certain logic. Following the same logic, 39 is related to 234. To which of the following is 43 related following the sa...
In a certain code language, 'TELEVISION' is written as 'UDMDWKQKMP' and 'PUNISHMENT' is written as 'QTOHTJKGLV'. How will 'HELICOPTER' be written in tha...
After arranging the given words according to dictionary order, which word will come at Third position?
1. Recant
2. Receive
3. Recent
4. Recess
5. Recall
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
BMY, DNW, ?, HPS
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
EHO HJP KLQ ? QPS
There are eight persons–Manoj, Nitya, Varun, Pranay, Kali, Reva, Sarayu and Teena. All of them are sitting in a straight row and are facing North but ...
111 In a certain code language, 'MISTAKE' is written as 'LHRUBLF' and 'PROBLEM' is written as 'OQNCMFN' How will 'STRANGE' be written in that language?
In a certain code language, "HINT" is coded as '8107' and "NIFT" is coded as '0197'. What is the code for 'F' in the given code language?Â
