Physics Spl

He can do B.Tech in astrophysics.
List of astrophysics colleges in India:
Indian Institute of Astrophysics, Bangalore
Gulbarga University , Gulbarga
Karnataka City College, Bangalore
R. V. Center for Cognitive Technologies Bangalore
St. Xavier's College, Kolkata
Indian Institute of Astrophysics, Bangalore
Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur
Saha Institute of Nuclear Physics - Kolkata, West Bengal
Institute Of Physics - Bhubaneswar, Orissa
Punjab University - Chandigarh, Punjab
College of Science & Technology - Visakhapatnam, Andhra Pradesh
Berhampur University - Berhampur, Orissa
Kamla Nehru Institute of Physical and Social Sciences - Sultanpur, Uttar pradesh
Source:
http://entrance-exam.net/forum/general-discussion/list-colleges-india-offering-b-tech-astrophysics-524337.html#ixzz4fRERNnCX

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Hi Alok,
The number of vibrations that are produced per second is called frequency. Frequency varies for each sound and is measured in hertz. One hertz is equal to one vibration per second. A sound with a low frequency will have a low pitch, such as a human's heartbeat. A sound with a high frequency will have a high pitch, such as a dog whistle. Humans cannot hear sounds of every frequency. The range of hearing for a healthy young person is 20 to 20,000 hertz. The hearing range of humans gets worse with age. People lose the ability to hear sounds of high frequency as they get older. The highest frequency that a normal middle-aged adult can hear is only 12-14 kilohertz. Also, the hearing range for men worsens more quickly than the hearing range for women. This means that women will have the ability to hear notes of higher pitch than men of the same age do.
All the best.